feat(cli): add pi as a supported coding agent - #804
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Adds the pi coding agent to the NeMo Relay CLI as a hook-path agent, plus the pi extension that drives it. pi has no native hook-configuration file and its external stream is observation-only, so hook calls must originate inside an extension. The extension is a thin HTTP client to the gateway: it forwards pi's lifecycle to /hooks/pi and gates tool calls on the gateway's verdict. CLI side: - crates/cli/src/agents/pi/ with descriptor, adapter, launch and doctor - PiPayloadExtractor using SessionHeaderPolicy::RelayOnly so pi never inherits a stray x-claude-code-session-id - /hooks/pi route and pi_hook handler - Pi on CodingAgent, AgentKind, AgentArg and AgentConfigs pi has no plugin marketplace -- no `pi plugin` verb, no manifest, and no MCP client -- so the ~15 marketplace arms reject pi explicitly and point at `pi install <source>` and the auto-discovery directories, rather than synthesizing manifests pi will never read. Two edit sites the compiler does not enforce, both handled: - FileAgentsConfig carries deny_unknown_fields, so [agents.pi] needed the deserializer as well as the runtime struct - InstallTarget::All enumerates agents explicitly; pi is deliberately absent Extension side: - integrations/pi/ forwards session, agent-run, turn and tool lifecycle - tool_call is the only hook that awaits a verdict; the rest are fired without blocking pi's critical path and drained at session_shutdown - a guardrail rejection arrives as HTTP 403 with error.type = nemo_relay_guardrail_rejected, and error.reason is passed to pi verbatim, so the model reads the guardrail's own words Boundary choices worth noting: tool_execution_start is not forwarded as a tool start (it fires before validation and for calls that never execute), and tool_execution_end rather than tool_result is the end boundary (tool_result never fires for blocked calls). Tests: 2 Rust tests pin the 403 and 200 paths on /hooks/pi; 13 Node tests pin the extension's half of the contract. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Three fixes found by running pi against a gateway with the ATOF exporter enabled and reading the emitted trace. 1. pi's turn_start/turn_end produced marks, not turn scopes. TurnEnded was only emitted for the hardcoded name "stop", which is Codex and Claude Code vocabulary that pi never sends. The gateway therefore opened one implicit turn covering the whole run and pi's own turn boundaries were lost. ClassificationRules gains a turn_end list. Codex and Claude Code declare &["Stop", "stop"], which preserves their behaviour exactly; pi declares its native turn_end. agent_settled is deliberately not in pi's list -- it marks the end of a logical agent run, which can span several turns, so closing the turn there would merge every re-entry attempt into one. 2. Unawaited hook posts raced, reordering the lifecycle. Firing observability posts concurrently let them arrive out of order. An observed trace had agent_start landing after turn_start and agent_end after agent_settled, and a session_shutdown that overtook an in-flight post closed the session and let the straggler open a second one. The extension now serializes every post through a chain. Observability hooks are enqueued rather than awaited, so pi's critical path is still not charged. The gating hook does await, which also makes it wait for anything queued ahead of it -- worth the latency, because a tool span opened under the wrong turn is simply wrong. 3. A generic arrow function stopped the extension loading. `<T>(job) => ...` in a .ts file is ambiguous with JSX, and pi's jiti loader resolves it that way. pi collects extension load errors rather than aborting, so the extension silently did not run. Declared as a function instead. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
pi's session_shutdown carries reason: quit | reload | new | resume | fork. The extension ignored it -- the mirrored type did not even declare the field -- and forwarded a session end for every reason. On /reload that is wrong. pi tears down and rebuilds the extension runtime while the session itself continues with the same session id, so ending the gateway session there closes its session scope and the session_start that follows opens a second one. One logical session silently became two disconnected traces. The handling was also asymmetric: session_start's reason was already forwarded. Now: reload drains the queue and returns without ending the session; quit and the three session-replacement reasons end it and forward the reason, plus targetSessionFile when pi supplies one. Known limitation, documented at the handler: attemptIndex and turnSeq live in the factory closure and pi re-runs the factory on reload with moduleCache: false, so they restart at 0 mid-session. turn_seq is therefore monotonic within a runtime rather than strictly within a session. Rebuilding them would mean replaying the session. Adds test/lifecycle.test.mjs, which drives the extension's handlers against a stub gateway. Nothing exercised them before -- the existing suite covers the wire contract in isolation -- so attempt_index and turn_seq were implemented and demonstrated in a live trace but never pinned. Now covered: turn attribution across a re-entry (colliding turn_index, monotonic turn_seq), attempt-counter reset on agent_settled, strict post ordering, session id on every post, and the shutdown-reason matrix. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`nemo-relay launch pi` printed a note asserting that model traffic is redirected by the extension registering a gateway-backed provider. It is not: nothing registers a provider yet, so pi's model calls go straight to the provider and the gateway sees no LLM traffic at all. The note now says what is actually true -- tool and turn activity is reported, model calls are not routed, and redirection needs the extension to register a provider because pi has no base-URL flag. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The hook table grouped `turn_start` and `turn_end` into one row and claimed both carry `turn_seq`. Only `turn_start` does, alongside `attempt_index`; `turn_end` posts `turn_index` alone (`integrations/pi/index.ts:191-205`). Split the row so each boundary states what it actually carries. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Closes the two remaining M3 gaps: RELAY-730's turn classification and compaction forwarding, and RELAY-729's attribution. 1. turn_start is classified. Only turn_end was mapped, so the gateway opened the turn implicitly on whichever event arrived first -- agent_start on the first attempt, turn_start on later ones -- and trailing agent_end/agent_settled marks opened an extra empty turn after every run. NormalizedEvent gains TurnStarted and ClassificationRules a turn_start list; Codex and Claude Code declare an empty one and keep their lazily opened turns. Classifying the open is necessary but not sufficient: on its own it adds a *leading* empty turn holding the agent_start mark, because mark() forces a turn open. So for harnesses that report a turn start, a mark arriving between turns is now recorded on the session scope instead. That is what removes the empty turn at both ends, verified by reverting the guard and watching the new test report three turn scopes where pi reported one. 2. Attribution reaches tool spans. tool_call and tool_execution_end carried neither attempt_index nor turn_seq, and turn_end carried turn_index but not turn_seq, so a tool call could be tied to an attempt only by reading arrival order -- which stops working the moment two attempts overlap. The extension now sends both on every attributable hook, and agent_settled sends attempt_index alongside the attempts count. Sending them was not enough. Mark events record the raw payload as their data, but tool spans are built from the extracted call id, name, arguments, result and metadata and drop ToolEvent::payload entirely, so the keys would have been accepted on the wire and silently discarded. PiPayloadExtractor::metadata now promotes the two numeric counters into event metadata. The same promotion puts attribution on the turn scope rather than only on a mark inside it, so "which attempt did this turn belong to" is answerable by walking the scope tree. pi's own turn_index is deliberately not promoted: the gateway assigns its own to the turn scope and the two would collide. 3. Compaction is forwarded. session_before_compact was in none of the three layers. Both halves are now forwarded: session_compact classifies as Compaction, which the runtime treats as proof the context was rebuilt (it marks the owning agent fresh), and session_before_compact stays a mark because it announces an intent any later-loading extension can still cancel. Its willRetry is the only advance notice pi gives an extension that the agent run is about to re-enter. Also drops tool_execution_start from the descriptor's hook_events -- the extension registers it, but only to remember a tool name for the matching end, and never posts it. Verified against a live pi 0.84.0 session with a real model: two turns, both turn_source: turn_start, the read span nested under its turn carrying attempt_index and turn_seq, and the run-level marks on the session scope with no empty trailing turn. Also driven through the hook route with three concurrent tools closing out of submission order and a forced re-entry, where pi's turn_index collides at 0 while turn_seq and attempt_index stay unambiguous. Green: 1163 + 12 + 102 Rust, 29 Node, tsc clean, pre-commit clean apart from cargo-deny/gofmt/go-vet, which are not installed on this machine. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
integrations/pi/ had zero CI: nothing ran its tests, nothing typechecked it, and it was not an npm workspace, so its package scripts were unreachable from the repo root. Adds it as a workspace member and a `test-pi` recipe, threaded through the same four layers OpenClaw uses: a `pi:` path filter, a `run_pi` output from ci_changes, an input on ci_node, and the pass-through in ci.yaml. The filter also covers crates/cli/src/agents/pi/ and the shared adapter, because the extension and the gateway share one wire contract and a change to either can break the other. `run_node` now also fires on a pi-only change, or the job that hosts the step would never start. Unlike test-openclaw, the recipe does not build the Node binding first: the pi extension is a sidecar HTTP client and loads no native addon. Docs: adds docs/nemo-relay-cli/pi.mdx and lists pi in the four places that enumerate agents -- the CLI about page, basic usage, the support matrix, and the root README. The page is explicit about what is not there: no persistent install because pi has no plugin marketplace, no LLM spans because pi's model traffic does not traverse the gateway, and no subagent representation. Two claims were corrected against the binary while writing the page. There is no `nemo-relay pi` shortcut subcommand -- pi runs through `nemo-relay run --agent pi` -- and NEMO_RELAY_PI_EXTENSION is required rather than optional, because pi extensions live in the user's own configuration directories and there is no Relay-managed location to fall back on. just docs-linkcheck passes. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The two limitations left on the extension README's follow-through list, both of which a reader hits without warning. Tool results are cut at 2000 characters before forwarding, so the gateway records what a tool returned rather than necessarily all of it. And pi has no nested-agent hook, so subagents are not represented at all -- including the multi-process case, where a child pi process running this extension resolves its own session id and appears as an unrelated session rather than as a subagent. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
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WalkthroughPi support now spans the CLI agent registry, Rust hook and session handling, the TypeScript extension, diagnostics, CI, tests, and documentation. Pi hooks support lifecycle forwarding, policy gating, safe argument transforms, inline-shell handling, and conditional model routing. ChangesPi integration
Estimated code review effort: 5 (Critical) | ~120 minutes Merge Risk: 🟠 High · up to The Pi integration can execute rewritten tool arguments without reapplying conditional policy checks to the final values, which may allow an unapproved action to run. The supported launcher path and session handling also have known failure modes, so merge should wait for these issues to be fixed or explicitly accepted. Sequence Diagram(s)sequenceDiagram
participant Pi
participant RelayExtension
participant Gateway
participant PiHook
participant SessionManager
Pi->>RelayExtension: emit lifecycle or policy hook
RelayExtension->>Gateway: post session-aware hook
Gateway-->>RelayExtension: return allow, block, fault, or transform
RelayExtension->>PiHook: POST /hooks/pi for forwarded events
PiHook->>SessionManager: adapt and apply normalized events
SessionManager-->>PiHook: return HookEffects
PiHook-->>RelayExtension: return transformed tool input
RelayExtension-->>Pi: continue, refuse, or apply rewritten input
🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Closes RELAY-732, the last real gap: pi's model calls now traverse the gateway,
so LLM spans land in the same trace as tool and turn spans and a Relay guardrail
can block a model call.
The mechanism is one call, not a provider implementation.
pi resolves a base URL per model from a generated catalog and has no base-URL
flag or generic environment override, so redirection has to happen inside the
extension. The ticket pointed at pi's `custom-provider-*` examples, which
register a `streamSimple` and re-implement a provider protocol. That is the
heavy path and it is not needed: `registerProvider(provider, { baseUrl })` with
no `models` makes pi rewrite the URL of every existing model for that provider
and keep their API, headers, costs and context windows
(`applyExtension`, core/provider-composer.ts:215, verified in pi's source rather
than taken from the doc comment). The extension stays a thin client.
Redirection is conditional, and the condition is the design.
The gateway forwards to one statically configured upstream per API family and a
client cannot override it per request -- inbound internal dispatch headers are
stripped, which is deliberate. So pointing a model at the gateway is only correct
when the gateway's upstream is the endpoint that model would otherwise call.
Redirecting an NVIDIA model into a gateway configured for api.openai.com does not
degrade to "no spans"; it breaks a session that worked a moment earlier.
The launcher therefore passes the gateway's own upstreams
(NEMO_RELAY_PI_{OPENAI,ANTHROPIC}_UPSTREAM, from ResolvedConfig, which
prepare_launch already had and pi ignored) and the extension redirects only on a
match. Skips are recorded as a `model_redirect` mark naming the reason --
upstream-mismatch, unserviceable-api, unknown-upstream -- so a trace without LLM
spans explains itself instead of looking broken. The decision is re-made on every
model_select. NEMO_RELAY_PI_REDIRECT=force skips the check, =off disables it.
Turn boundaries now block, because model traffic does not use the hook queue.
Reading the first redirected trace found a real defect: an LLM span opened under
the previous turn. pi sends model requests to the gateway directly over HTTP
while observability hooks go through the extension's serial queue, so the next
turn's model request beat our queued `turn_end` and was parented by the turn that
was still open. `turn_start` and `turn_end` are now awaited. Two local round
trips per turn buys correct parenting, on the same reasoning that already makes
tool_call await -- a span opened under the wrong turn is simply wrong. The
re-captured trace has every span closing inside the scope that opened it.
Verified against live pi v0.84.0 with a real model: three LLM spans nested under
their own turns alongside the tool span, and separately, with the example policy
plugin configured block_llms = true, a real guardrail rejecting a real pi model
call -- pi surfaced it as a clean 403 and the trace recorded the rejection as a
mark rather than a span, because the call never executed.
Also corrects two counts the ticket carried: pi ships 38 providers, not 39, and
6 of them speak an API the gateway has no route for, not 7 -- "Radius" is an
OAuth mode, not a provider.
Green: 1164 + 12 + 102 Rust, 42 Node, tsc clean, docs-linkcheck 0 errors,
clippy -D warnings clean, pre-commit clean apart from cargo-deny/gofmt/go-vet,
which are not installed on this machine.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The Status section linked out to an issue tracker that is not readable from this repository, and named its identifiers inline. Neither belongs in a public README: a reader outside the org gets dead links, and the identifiers carry no meaning for them. Says the same thing in prose instead. Nothing about the described behaviour changes -- it is still a proof of concept verified against pi v0.84.0, and model redirection is still conditional on the gateway fronting the model's provider. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The transform half of the pi tool-policy work. Guardrails could already block a
call; a request intercept could not change one, because the hook verdict
travelled only as an HTTP status code and there was no channel for a rewritten
payload.
The chain already existed. `tool_request_intercepts(name, args) -> Result<Json>`
is public in core and returns rewritten arguments; `start_tool` ran the guardrail
chain and never this one. So the gateway side is wiring: run the chain, use its
output as the span's arguments so the trace records what will execute, and hand
it back.
Handing it back needed one plumbing change. `pi_hook` builds its response before
`apply_events` runs, so `apply_events` now returns `HookEffects` carrying the
rewrite, and the pi adapter merges it into the body:
{"tool_call": {"tool_call_id": "...", "input": {...}}}
Absent a rewrite the body stays `{}`, which is what an allow has always been, so
an older extension is unaffected. `tool_call_id` is echoed so the extension can
refuse a body belonging to a different call.
Gated per agent. Codex and Claude Code have no way to execute a rewrite, so
running the chain for them would record arguments on the span that never ran --
worse than not running it, because the trace would then disagree with reality.
The extension constrains the rewrite rather than validating it, because it
cannot validate it.
pi validates arguments before the `tool_call` hook and never re-validates -- its
own types say so -- and the extension cannot read a built-in tool's schema: pi
exposes `tools` only on the `Extension` interface, which is an extension's own
registered tools. Of the three options the design considered (fetch the schema,
forward the schema, constrain the transform), the first two are therefore
impossible and the third is forced.
So a transform may rewrite the values of existing keys, preserving each value's
JSON type, recursively. Adding a key, removing one, changing a type or changing
an array's length is refused, which keeps the required keys and types the schema
already accepted. This is structural, not schema validation: pattern, enum and
range constraints are not checked and cannot be, and that limitation is
documented and asserted rather than glossed.
A refused transform blocks the call. Running the original arguments would
silently discard a policy decision, which is the failure the transform existed to
prevent, and it is a different axis from NEMO_RELAY_PI_FAIL, which governs an
unreachable gateway rather than one that answered with something unusable.
Verified against live pi v0.84.0 twice. A shape-preserving rewrite of a read
path executed: the model asked for alpha.txt, the gateway rewrote it to beta.txt,
and pi read beta.txt. A key-adding rewrite blocked every one of eight tool calls,
and the model reported it as a policy misconfiguration rather than a refusal of
its request, which is what the reason string is written to produce.
An earlier run of that second check appeared to pass the unsafe transform
through. It had not: the stub only rewrote paths containing alpha.txt, so when
the block worked the model retried with `cat alpha.txt` through bash, which the
stub left alone. The test was wrong, not the code -- logging every call rather
than only the rewritten ones showed it immediately.
Green: 1166 + 12 + 102 Rust, 52 Node, tsc clean, docs-linkcheck 0 errors,
clippy -D warnings clean, pre-commit clean apart from cargo-deny/gofmt/go-vet,
which are not installed on this machine.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
License DiffCompared against Lockfile license changesLockfile License ChangesRustAdded
Removed
Updated/Changed
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pi's `!cmd` and `!!cmd` never reach the tool registry, so `tool_call` does not fire for them and none of the tool gating covered them. They reach pi's `user_bash` hook instead, which is interceptable: a handler that returns a `BashResult` makes pi skip execution entirely and record that result. The extension now posts the command to `/hooks/pi` as a tool start named `user_bash`, so the same conditional-execution guardrail chain and the same 403 contract decide it. The name is deliberately not `bash`: a guardrail receives only the tool name and the arguments, so a policy can tell a command the user typed from one the model proposed only if the two arrive under different names, and "the model may not run shell commands" should not also stop a human typing `!git status`. The cost is that a policy covering both has to name both, which the docs state. pi gives the hook no block-and-reason contract, so a refusal is a synthetic failed `BashResult` that pi records as though the command had run: exit code 126 (found, but could not be executed), an attribution line, then the guardrail's reason verbatim. `NEMO_RELAY_PI_FAIL` governs this path too. A rewritten command is refused rather than run, because pi's result type can replace the result or the execution backend but never the command itself. `emitUserBash` wraps handlers in try/catch, so a throw here fails open and is invisible -- the opposite of `tool_call`. Every path returns an explicit decision, and the catch re-reads the failure policy rather than defaulting to open, so an explicit fail-closed setting is not overridden by an internal error. Two things beyond the gate itself: - Tool events for a harness that reports its own turn start no longer open a turn when none is open. Inline shell is the first tool event that can arrive between turns -- a command typed at an idle prompt -- and opening a turn to hold it invented a boundary pi never reported. This is the rule `mark` already applies, reached from the tool side. It also changes where a `tool_execution_end` that lands after `turn_end` attaches for pi: on the session scope rather than in a manufactured turn. Codex and Claude Code report no turn start and are unaffected. - The descriptor's `hook_events` gains `tool_arguments_transformed`, which the extension has been posting since argument transforms landed. The list is an inventory of what the extension posts, so a test now pins the exact set. Verified live against pi v0.84.0 driven in RPC mode: an allowed command runs and its span sits directly under the session scope; a command refused by the `examples.rust_native_policy` plugin never executes, and the reason reaches the user verbatim with exit code 126; an unreachable gateway under fail-closed refuses with the infrastructure-fault wording. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
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Three M5 items, all shaped by the same problem: the ways this integration fails are quiet ones. **A doctor preflight for the load path.** pi adds project-scoped extensions to its candidate set only when the project is trusted, and `-p`, `--mode json` and `--mode rpc` never prompt for trust. The skip is a bare conditional rather than an error path, so pi does not treat it as a failure and never reports it -- and the extension cannot report it either, because it is not running. `nemo-relay doctor pi` now warns when an extension sits on a trust-gated path, and probes the gateway the extension will post to. `AgentInfo` gains a `checks` list, empty for Codex and Claude Code and omitted from their JSON entirely: their setup is written by `nemo-relay install`, so `hook_status` already describes it. pi's is installed by the user, wherever they like, and pi's own trust rules decide whether it loads -- a finding that deserves its own status rather than a sentence in a summary. The gateway probe resolves its URL from the resolved `bind` when the environment variable is unset, because the launcher sets that variable *from* the config: a check that only read the variable would report a working gateway as down for anyone who changed `bind`. It classifies rather than just connecting, so "your gateway is down" and "something else owns that port" are told apart, and it never returns `Fail` -- doctor running before the gateway starts is the normal case, not a broken machine. It is skipped under `--offline`, and for an agent that is neither configured nor asked about, so a machine that does not use pi does not spend the timeout budget dialling a gateway nobody mentioned. **Test harness and coverage.** Both test drivers returned the *last* handler's result; pi returns the *first*. That inverted the trap this extension documents in two places, so the harness itself could not catch a regression in preemption behaviour. There is now one shared driver with pi's semantics, and the preemption case is pinned: an extension ahead of ours decides, and the gateway never sees the call. Filled the gaps that left: the `tool_call` gate had no end-to-end test at all -- every component it composes was pinned and the handler wiring them was not, which is easy to miss precisely because the coverage either side looks complete. Also concurrent tools closing out of submission order, unpaired tool boundaries, compaction-driven re-entry, a slow gateway on both gates, and the bound on what an interrupted session loses. **Two limitations documented rather than papered over.** pi registers no SIGINT handler in any mode, so Ctrl+C in a headless mode kills it with teardown never running; what is lost is bounded to marks queued since the last awaited hook, because both gates and both turn boundaries block on their round trip. And a broader one, found while costing the tool-result policy gap: a tool execution intercept registered by any plugin never runs under the CLI gateway. The registry has exactly one consumer, `tool_call_execute`, which the gateway does not call -- it applies policy through the hook path. Guardrails and request intercepts do run there, because both have standalone runners; there is no response-phase equivalent. Worth stating where a user meets it. Also adds `integrations/pi` to the version bump. It is private and unpublished, so this changes nothing today -- it is there so the version cannot already be stale on the day that changes, since a workspace member absent from that list drifts with no lockfile mismatch and no CI failure to catch it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`pi install` resolves a local path or a git URL as readily as an `npm:` specifier, so the package being unpublished does not cost a route -- it costs a spelling of one. Publishing would buy that spelling in exchange for an npm namespace, a build step (the sources are TypeScript nothing compiles today) and release wiring, so `private: true` stays, and now says so on purpose rather than reading as an oversight. Both install routes are spelled out with the commands to run, since "user scope" was previously stated as a rule without showing what it looks like. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
✅ Action performedReview finished.
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… is ours Two holes in extension resolution, opposite sides of the same split. `extension_location` accepted any path that existed. Every other discovery route matches on the `nemo-relay-pi` manifest name; the explicit one did not, so a stale or mistyped `NEMO_RELAY_PI_EXTENSION` naming somebody else's extension made `doctor` report a Pass *and* made the launcher hand that path to `-e`. A green check described a session with no Relay code in it. `extension_path` in the launcher then read the same variable a second time, and only that variable. Both install routes the README recommends -- `pi install <path>` and a file drop into `~/.pi/agent/extensions/` -- set no variable and no document tells a user to set one, so `doctor` resolved the install and reported the setup as ready while `nemo-relay run --agent pi` refused to start. The launcher now goes through `launchable_extension_path`, which is `relay_extension_sites` minus two things it must not promote: - **Project scope.** `-e` is never trust-gated, so promoting one would run repository code pi itself declined to trust -- undoing the gate the preflight exists to warn about. The launch error says so. - **A source that is not a path.** `pi install` can record an npm or git specifier, and pi resolves an `-e` argument as a package *source*, so handing one back could make a launch fetch from the network. Passing `-e` for something pi would have discovered anyway is safe: pi canonicalizes and de-duplicates the merged command-line and discovered sets before loading, and both routes resolve a package directory through the same `pi.extensions` manifest, so the extension registers its hooks once. Verified against pi v0.84.0 rather than assumed: `-e` accepts a package directory, and `mergePaths` is what makes the duplicate harmless. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
…fail A review asked for `tool_conditional_execution` to be re-run on the transformed arguments, on the ground that an intercept can rewrite a policy-sensitive value after the guardrail allowed the call. The sequence is real, but that is the runtime's documented managed-call order -- the core implements it identically in `tool_call_execute` -- so re-deciding here would fork the middleware contract for one harness, evaluate every conditional guardrail twice, emit two guardrail scope pairs per call, and bill a counting or LLM-judge guardrail twice. The order is now stated where it is load-bearing, in the code and in both documents, rather than changed. What the same read did surface is an ordering hazard that was live. `tool_argument_transform` was assigned before the fallible `tool_call(...)`, and the field lives on the session until a hook response drains it. A rewrite recorded before a failing start therefore rode out on the *next* response, where the extension's `tool_call_id` echo reads it as another call's rewrite and refuses that call. It is published after the start can no longer fail. Tests: the transform test now registers a second, later intercept, so the break-chain flag its comment justifies is actually exercised -- it fails if the chain stops early. A new test pins one guardrail evaluation per call, so a re-check cannot land silently. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Each of these compiled and passed without touching the thing it was named
for.
- `route_event_through_alias_covers_all_event_variants` listed twelve of the
thirteen `NormalizedEvent` variants. Widening the trailing match arm for
`TurnStarted` kept it compiling, so alias rewriting for the one variant this
PR added went unverified -- including that it must *not* close the alias.
- The centralized version boundaries enumerated Claude Code and Codex only.
pi prints a bare semver with no product token, which is the accept path
neither of the others exercises, and the reject loop covered only malformed
input.
- `AgentInfo::checks` is the only carrier of pi's preflight findings, and
nothing asserted it -- not the serialized shape, not the human render. The
JSON test now pins both halves of `skip_serializing_if`: absent for an agent
with no findings, and the nested `{name, status, details}` shape for pi.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
…onestly
Two defects in the same decision path, both found by re-reading it rather
than by a failing test.
`SERVICEABLE_APIS` was an object literal, and pi types `api` as `KnownApi |
(string & {})` -- a free-form string out of models.json, remote catalogs and
other extensions. A model whose `api` is `constructor`, `toString`, `valueOf`
or `__proto__` therefore resolved through the prototype chain to something
truthy, the unserviceable-API guard did not fire, and the model was scored
against the Anthropic upstream and redirected into a route the gateway does
not have -- with the inherited value rendered into the reason string. A `Map`
has no prototype keys to inherit. `noUncheckedIndexedAccess` already typed
the lookup as optional, so no call site changes.
The `upstream-mismatch` skip was effectively unreachable. `siblingsOf` reads
`ctx.modelRegistry.getAll()`, which returns the selected model too, so with a
real pi runtime a model is always one of its own siblings -- and the
whole-provider scan ran first. The commonest outcome there is, an ordinary
endpoint mismatch, was reported as `provider-mixed-endpoints` naming the
selected model as the sibling blocking itself. The selected model's own check
now runs first. Same decision either way; the code an operator reads is now
the one they can act on.
Tests: both cases fail against the previous source. The stub gateway gains a
`raw` reply so a case can put a body on the wire that `JSON.parse` cannot
read -- the inline-shell suite's "unparseable success body" condition was
sending a valid `{}` and passing as a plain allow, so the fault branch it was
named for was never reached.
Two comments claimed pi keeps the extension runtime alive across `/new`,
`/resume` and `/fork`. It does not; it rebuilds it. The defensive
re-registration stays, described as the defence it is.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`integrations/pi/tsconfig.json` sets `"types": ["node"]` and the sources need it -- `fetch`, `AbortController`, `setTimeout`, `process` and `URL` all come from there. The workspace declared no dependencies at all, so `@types/node` resolved only because the sibling OpenClaw workspace declares it and npm hoists it to the root. Re-spec or drop it there and `just test-pi` breaks in a directory nobody edited. The spec matches OpenClaw's `^24.0.0` exactly, so npm keeps deduping one copy at the root rather than nesting a second under `integrations/pi`. `typescript` is deliberately not added: it resolves from the workspace root by design, which is the difference between the two. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
…comes
Six documentation gaps, each verified against the code rather than against
the review text that reported it.
- **The allow body was documented as always empty.** It can carry
`{"tool_call": {…}}`. And the echoed `tool_call_id` is a *precondition*, not
decoration: the extension applies a transform only on an exact string match,
and refuses -- which blocks -- on a missing, non-string or different id.
Neither page said so.
- **The hook inventory listed 11 of 15 names.** Missing were
`model_redirect`, `tool_arguments_transformed`, `user_bash` and
`user_bash_end`. Three of the fifteen are not pi hooks at all, which the row
could not convey on its own, so a paragraph names them. The column is keyed
by the name the gateway receives, so it carries `model_redirect` rather than
pi's `model_select` -- the two tables index differently on purpose.
- **`provider-mixed-endpoints` was undocumented** on all five surfaces that
describe redirection, along with the reason it exists: `registerProvider` is
provider-wide, so the endpoint check is applied to every sibling.
- **Guardrail order.** A request intercept can rewrite a value a
conditional-execution guardrail would have refused, because the verdict is
on the arguments pi proposed. Both documents now say to put the decision in
the guardrail.
- **Four pi source citations were imprecise.** `package-manager.ts:2394` is a
blank line above the guard it describes, `config.ts:515-522` overshoots
`getAgentDir` by one, and `extensions/types.ts` is `core/extensions/types.ts`
-- pi has both directories. Each now names the pinned version inline, so a pi
bump is a grep for `v0.84.0`.
- **The pi CI filter comment claimed a coverage it does not have.** `test-pi`
runs a TypeScript typecheck and Node tests against a *stub* gateway, so it
can never observe the route, the classifier, or the session manager. Those
are the `rust` filter's, and listing `crates/cli/src/sessions/**` here would
put a full Node matrix on nearly every CLI change for no signal.
Also: title case for the README's headings and table headers, matching the
repo's documented style and the sibling docs page, with intra-page link text
following the headings it names; and en-US throughout the package, including
the runtime strings a blocked model reads.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
…t once A counter alone proves one evaluation happened, not *which* arguments it decided on -- move the conditional check after the intercept and the test still passes with a count of one. It now records every argument object the guardrail was handed and asserts the whole sequence, which catches both failure modes: a second pass, and a single pass on the rewrite. Recorded rather than asserted inside the closure on purpose. The runtime runs guardrail callbacks under `catch_unwind`, so a panic there becomes `FlowError::Internal` and reaches the test as a 500 -- indistinguishable from a guardrail that genuinely errored, and with the actual mismatch nowhere in the output. Verified by moving the check: the assertion fails with the two argument objects side by side. Also: "15 lifecycle hooks" was an overclaim in both places it appeared. Three of the fifteen are synthesized by the extension rather than emitted by pi, and the set spans tool and inline-shell activity as well as lifecycle. Both surfaces now say what the fifteen are, and the `user_bash_end` row is keyed like the other two synthesized events rather than posing as a pi hook. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The previous wording said the table shows what the three synthesized events derive from "rather than a hook pi emits", while the table keyed `model_redirect` on `model_select` -- a pi hook. The review that caught it proposed saying `model_redirect` derives from `model_select`, which is half true: it is posted from `session_start` as well, which is the first decision of the session and the one a user with no LLM spans is looking for. Both tables now key it on both sources and mark it, and `tool_arguments_transformed`, as synthesized. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
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Inline comments:
In `@docs/nemo-relay-cli/pi.mdx`:
- Around line 271-274: Update docs/nemo-relay-cli/pi.mdx lines 271-274 to state
that redirection is evaluated for every model_select but model_redirect is
emitted only for notable decisions; update docs/nemo-relay-cli/pi.mdx lines
287-288 and integrations/pi/README.md line 348 to describe marks as emitted for
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**/*.{md,rst,html,txt}
📄 CodeRabbit inference engine (.agents/skills/review-doc-style/assets/nvidia-style-brand-terminology.md)
**/*.{md,rst,html,txt}: Always spellNVIDIAin all caps. Do not useNvidia,nvidia,nVidia,nVIDIA, orNV.
Usean NVIDIAbefore a noun because the name starts with an 'en' sound.
Do not add a registered trademark symbol afterNVIDIAwhen referring to the company.
Use trademark symbols with product names only when the document type or legal guidance requires them.
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Precede NVIDIA product names withNVIDIAon first mention when it is natural and accurate.
Do not rewrite product names for grammar or title-case rules.
Preserve third-party product names according to the owner's spelling.
Include the company name and full model qualifier on first use when it helps identify the model.
Preserve the official capitalization and punctuation of model names.
Use shorter family names only after the full name is established.
Spell out a term on first use and put the acronym in parentheses unless the acronym is widely understood by the intended audience.
Use the acronym on later mentions after it has been defined.
For long documents, reintroduce the full term if readers might lose context.
Form plurals of acronyms withs, not an apostrophe, such asGPUs.
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Link the first mention of a product name when the destination helps the reader.
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Spell
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Use descriptive link text. Avoid raw URLs and weak anchors such as "here" or "read more."
Use title case consistently for technical documentation headings.
Introduce code blocks, lists, tables, and images with complete sentences.
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**/*.{md,mdx,rst}
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**/*.{md,mdx,rst}: Use title case consistently for technical documentation headings and table headers; avoid quotation marks, ampersands, and exclamation marks in headings, while preserving official product, event, research, and whitepaper title case.
Format code elements, commands, parameters, package names, expressions, directories, file names, and paths in monospace; represent path placeholders with angle brackets inside monospace.
Format UI buttons, menus, fields, and labels in bold, and separate consecutive UI navigation labels with>.
Use quotation marks for error messages and strings when appropriate, italics for newly introduced terms and publication titles, and plain text for keyboard shortcuts.
Represent GitHub repositories with owner/repository link text, such as[NVIDIA/NeMo](link), rather than generic repository wording.
Introduce every code block with a complete sentence; do not let a code block complete or interrupt the grammar of surrounding prose; use syntax highlighting when supported.
Keep inline method, function, and class references consistent with nearby documentation; omit empty parentheses in prose when no call is shown.
Use descriptive link text matching the destination title when possible; avoid raw URLs, generic anchors, long-sentence links, and unnecessary links that distract from procedures.
Ensure lists have a complete lead-in sentence, more than one item, no more than two levels, parallel construction, one idea or action per item, and appropriate punctuation; use bullets for unordered items and numbers for ordered tasks.
Format definition lists with a bold term followed by a complete, parallel, punctuated definition.
Use tables for reference information, decision support, compatibility matrices, and comparable choices; flag one-row tables, missing captions or lead-ins, sentence-case headers where title case is expected, unexplained empty cells, and code or links that would be clearer as prose.
Write procedure steps as imperative ...
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Keep stable public wrappers at the
scripts/root in docs and examples. Reference namespaced helper paths only when documenting internal maintenance work.
**/*.{md,mdx}: Prefer the documented public API, not internal shortcuts
Keep package names, repo references, and build commands current
When documenting contribution workflow, require an issue before external contribution PRs and note that NVIDIA contributors may use a GitHub or Linear issue.
Update entry-point docs when examples or reading paths change
Keep release-process and release-notes guidance in repo-maintainer docs such as
RELEASING.md, not as user-facing docs pages orCHANGELOG.md
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only point at namespaced helper paths when documenting internal maintenance
work
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UseSONAR_IGNORE_START/SONAR_IGNORE_ENDonly for documented false
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**/*: Tool execution callbacks and each execution-interceptnextcontinuation
return the canonicalToolExecutionResult { result, annotation }. A forwarding
intercept must preserve both fields inToolExecutionInterceptOutcome; Relay
retainspending_marksseparately.
Tool sanitize-response guardrails receive
onlyresult.
- Registration and duplicate-name behavior
- Deregistration and no-op missing-name behavior
- Ordering by priority
- Callback failure policy, including fail-open behavior when required
- Scope-local registration, inheritance, and cleanup on pop
- Parity coverage in every affected binding
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Use stable, documented framework or plugin APIs
Wrap tool and LLM paths at the correct framework boundary
Preserve the framework's original behavior when NeMo Relay is absent
Integration uses public framework or plugin A...
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MDX top-of-file SPDX comments must use {/* ... */} delimiters instead of HTML comment delimiters (Must-Fix)
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🧠 Learnings (1)
📚 Learning: 2026-08-13T13:35:00.808Z
Learnt from: willkill07
Repo: NVIDIA/NeMo-Relay PR: 761
File: crates/plugin/README.md:80-81
Timestamp: 2026-08-13T13:35:00.808Z
Learning: When documenting NVIDIA/NeMo-Relay in Markdown files, if the target documentation has not yet been published, use a descriptive link to the NVIDIA/NeMo-Relay repository instead of an unavailable documentation URL.
Applied to files:
integrations/pi/README.md
`isNotable` gates emission: a decision of `no-model` or `already-redirected` is evaluated and then dropped, because a mark per `session_start` saying "no model yet" is noise in every trace. Four places said or implied otherwise -- "every outcome is recorded", and two table rows keyed on `session_start`, then every `model_select` with no mention that the posting is conditional. They now separate the two: redirection is evaluated on each selection, and `model_redirect` is posted for each decision that explains something. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Two holes in extension resolution that a review found, both verified against
pi v0.84.0 rather than reasoned about.
**`-e` adds to pi's extension set; it does not replace it.** My own comment
claimed the load was safe because pi de-duplicates the merged command-line and
discovered sets -- true, but only by *canonicalized path*. Two distinct
checkouts of one package are two identities to pi (`getPackageIdentity` gives a
local source `local:<path>`), so an explicit `NEMO_RELAY_PI_EXTENSION` pointing
at checkout A while checkout B is installed loads both: two factory calls, two
handler maps, every hook posted twice. A duplicated `turn_start` closes the turn
its twin just opened as superseded, and the inline-shell gate decides one
command twice with the second verdict the one the user gets. (The model-tool
gate is unaffected -- `start_tool` returns early on a known call id.) The
launcher now refuses and names both copies, and `doctor` reports the same
condition, which is reachable with no Relay command involved at all: pi scans
its extensions directory and its recorded packages independently.
An in-extension guard was considered and rejected. It would have to tell a
sibling copy from a runtime pi has since torn down, and the only signals for
that are pi internals -- get it wrong and the extension registers nothing after
`/reload`, a silent total loss of governance, strictly worse than the duplicate.
**A `packages` entry can be an object, and only strings were read.** pi accepts
`string | {source, autoload?, extensions?, ...}` and resolves both through one
path. This was not a hand-edit shape: pi's own configuration selector rewrites
a string entry into the object form the moment a user toggles any resource of
that package, so one keystroke in pi's UI made `doctor` report an installed
extension as missing and made `run --agent pi` refuse to start.
Both forms are read now, and the two filter shapes that leave a package's
extensions disabled -- an empty `extensions` array, and `autoload: false` with
no patterns -- are reported as such rather than as absent or as a plain Pass.
The launch path deliberately ignores that flag: `-e` applies no settings
filter, so the launcher still instruments a session the user's own `pi` runs
are missing.
Three pieces of user-facing text were left contradicting the code by the
previous round, and are corrected here because they are its consequences:
- The trust warning told a project-scoped user to run `nemo-relay run --agent
pi` instead -- the one thing that now refuses a project-scoped copy. It names
the two routes the launcher does resolve.
- `nemo-relay launch pi` is not a command and never was. It appeared in the
marketplace-unsupported error, which a dozen call sites return, and in the
extension's own header.
- The README called `NEMO_RELAY_PI_EXTENSION` an override. It is the
highest-precedence *candidate*: ignored unless the path exists and its
manifest names this package, after which resolution falls through.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Contributor
Author
|
/ok to test 3a9fa20 |
End-to-end testing found `nemo-relay run --agent pi` returning 401 on every model call the moment redirection fires -- the exact path the docs advertise with "Redirected; LLM spans appear under the turn". A gateway started by `run` authenticates its own client before a request intercept can rewrite the route, and rejects a provider call that does not present this invocation's credential. Claude Code's launcher injects it through `ANTHROPIC_CUSTOM_HEADERS`; Codex reads it through its `env_http_headers` provider configuration. `prepare_launch` already exports `NEMO_RELAY_PROXY_CREDENTIAL` for *every* agent, so the value was sitting in pi's environment the whole time -- the extension simply never read it, and `registerProvider` set only the session join key. It goes on the registration, beside the session id, for the same structural reason and a stronger one: the credential authenticates this invocation, so a provider the gateway does not front must never see it, and `registerProvider` runs only on a redirect. Absent -- a standalone `nemo-relay --bind` daemon requires no credential -- the key is omitted rather than sent empty. Not a `NEMO_RELAY_PI_*` name on purpose: the launcher exports one variable for all three agents, and a pi-specific alias would be a second name for one value. Verified: the new test fails against the previous source. The gateway probe is unaffected -- only provider passthrough is authenticated, not `/hooks/pi`. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`nemo-relay agents --json` reported `status: "pass"` for a pi whose only
install is project-scoped -- the exact silent skip the preflight exists to
catch -- while its own nested check said `warn`. The fold was gated on
`configured || target_requested`, and `configured` means only that
`[agents.pi] command` is set in Relay config, which almost nobody sets.
That gate is right for readiness ("the hook config is missing" should not make
a bare `doctor` complain about an agent you do not run) and wrong for a
preflight finding, which is *evidence*: every warning branch already requires
the extension to be installed on this machine, and a machine without one
reports `Info`, which folds either way. `doctor pi --json` was already correct;
now `agents --json` agrees with it.
Also documented, from the same end-to-end round:
- **A slow gateway multiplies, it does not just delay.** Posts are serialized
by design, so a gating hook waits out everything queued ahead of it: against
a gateway that holds requests, the first gate of a session pays
`NEMO_RELAY_PI_TIMEOUT_MS` once per queued post, not once. The queue stays --
it is what keeps session and turn boundaries derivable from arrival order --
but the cost now appears where the value is chosen.
- **The shipped `rust-native-plugin` example blocks every pi tool call.** Its
intercept tags arguments with two added keys, and an added key is exactly
what the shape invariant refuses. Correct on both sides, and previously
written down on neither, so it is noted in the pi transform section and in
the example's own README. The example is deliberately not changed: adding
keys is what it exists to demonstrate.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`resolveFault` opened every fail-closed block with "could not be reached", including the four cases where the gateway did answer -- HTTP 413 or 500, a 403 without the guardrail marker, an unparseable 2xx body -- and the case where the gateway was never consulted because the inline-shell handler itself threw. The string reaches the model, and the user, verbatim. Live against a gateway returning 413 it read "could not be reached ... Details: gateway returned HTTP 413": the `Details:` line was right and the sentence sent the reader to debug a socket that was working. A fault now carries `reached`, and the opening picks from it. The tail is unchanged, because it is the part a model has to act on and it is the same either way: nothing judged the request, so the request is not what to change. The same round asked for tool arguments to be bounded the way results are. **Not done, because it would be unsafe.** The `tool_call` post is the gated one: a guardrail decides on exactly those arguments, and a request intercept sends a rewritten copy back for pi to execute. The shape invariant checks JSON types and key sets, not content -- so a truncated `content` passes it and a `write` lands on disk cut short. A result has no path back into execution, which is why only results are bounded. That asymmetry, and the 20 MiB gateway ceiling that is the real bound on arguments, are now written down, and a test pins that the invariant cannot tell a shortened string from the original. Also corrects a claim in the transform test header that this PR had already retracted eleven commits earlier: the tool schema is reachable, and not using it is a choice about staleness rather than a limitation. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Five findings, four of them on code the last two rounds added.
**Both source readers stopped at the first match.** pi resolves every distinct
package source -- two `packages` entries are two identities to
`getPackageIdentity`, and `collectAutoExtensionEntries` walks a whole
directory -- so two copies inside *one* source both load and post every hook
twice, while the duplicate check saw one. Both readers now return every copy.
The directory scan is restricted to the shapes pi accepts as an entry and
sorted, because `read_dir` order is undefined and the launcher's choice must
not vary run to run.
**The conflict predicate modelled neither direction of pi's active set.** It
counted copies pi's own settings switch off -- a hard launch refusal over a
copy that was never going to register a hook -- and ignored project-scoped
copies, which a *trusted* project does load beside `-e`. It now refuses only on
copies pi is certain to load. The project case cannot be decided from here at
all (`-a` overrides trust, `defaultProjectTrust` pre-answers it, session-only
trust persists nothing), so it becomes a launch note rather than a refusal:
refusing would block every launch in an untrusted project, and `-p`,
`--mode json` and `--mode rpc` never prompt, so untrusted is the common state.
**A non-empty `extensions` filter was read as "enabled".** pi's own
configuration selector disables a resource by writing `-<path>`, a force-exclude
pi applies last and unconditionally -- so one keystroke in pi's UI left doctor
reporting Pass for a package pi loads nothing from. Exact `+`/`-` patterns are
decided now, against the entry points the manifest declares. Globs are not:
pi expands those with `minimatch`, and a false warning costs more than a
missing one, so anything undecidable still reads as enabled.
**Every scope end now names its own closer.** `close_agent_scope` had no
metadata channel while `close_turn_scope` did, so pi's session end repeated
`session_start` and bucketing ATOF by `hook_event_name` never yielded a session
end. Shutdown and sweep closes still pass `None`: no hook stands behind them.
**A pi session that only ever held a mark is now swept.** `is_idle_for`
required an open turn, because the sweeper's job is to close an idle *turn* --
but pi's marks open the session scope instead, which is exactly what
`has_explicit_turn_start` is for, so those sessions were resident until process
shutdown while Codex's and Claude Code's were swept. Narrowed by two guards: a
session pi announced is a user idling between turns and is left alone, and
`turn_index == 0` protects one whose `session_start` was lost but which did
work. The shared non-object-payload question stays deferred -- it changes all
three hook routes, and a plain `{}` defeats the obvious fix.
Also repairs two doctor strings whose line continuations were lost when they
were written, rendering with runs of stray spaces mid-sentence.
Every new test was run against the previous source first; six of them fail
there.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`0"`, `12"`, `102"` and `1206"` are shell-redirect debris -- a misquoted `grep -c` wrote its target into a file named after the count. Each holds one line of `target/debug/deps/...` build output under an absolute local path. They were swept in by a `git add -A` in `01411c19`. They had been sitting untracked in the tree, were noticed, and were judged to predate the branch and left alone -- and then committed by the next blanket add, which is exactly the gap between "not mine" and "not staged". Removed rather than rewritten: they are already pushed, so an amend would not unpublish the path, and rewriting published commits on a branch under review is the manoeuvre that previously landed eight unsigned commits here. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Five findings, four of them on the discovery code the last round added. **Selecting the first site could manufacture the duplicate it then refused.** `launchable_extension_path` took the first ungated site regardless of its filter, so with a disabled copy recorded before an enabled one it chose the disabled one -- and `-e` applies no settings filter, so that choice *re-enabled* it and the enabled copy became a genuine second load. The launch was refused over a duplicate the choice created. It prefers a copy pi already loads now, and falls back to a filtered-off one only when that is all there is, because `-e` still makes that work. The doctor's duplicate check asks the same question of the same copy rather than of whichever site sorts first. **`disabled_by_settings` was a bool, and the third state was the common one.** pi sorts patterns into force-include, force-exclude, exclude and include, and only the first two are exact strings; the rest are globs it matches with `minimatch`. An include list that never names our entry (`["other.ts"]`) or an `autoload: false` delta that adds something else back are both decidable and were reported as loaded -- and a genuine glob was reported as loaded too, which is the claim this module exists to stop making on no evidence. The verdict is now `Loads` / `Excluded` / `Undecided`, and doctor warns on the third rather than passing. **The project-copy launch note described copies that cannot double a trace.** It included entries pi's settings switch off, and entries canonically identical to the launched package, which pi de-duplicates by path. **`reached: false` still conflated three faults.** A timeout is not an unreachable gateway -- it may be up and slow, and posts are serialized so a gate also waits out its queue -- and a handler failure is not a transport result at all. The fault carries a four-way origin now (`transport`, `timeout`, `response`, `handler`) with one opening each and the same tail, since nothing judged the request in any of them. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
`settings.json` carries an `extensions` array alongside `packages` -- "local extension file paths or directories" -- in both scopes, and nothing here read it. A user who registered the extension that way got "pi extension not located" from `doctor` and a hard refusal from `nemo-relay run --agent pi`, for a setup pi loads without complaint. It was also invisible to the duplicate check, so it could double-load undetected. Easy to miss, and worth saying why: `SettingsManager::getExtensionPaths()` exists and has no callers, so the key reads as dead until you find the generic loop over pi's four resource types that consumes it by name (`resolve`, pi `v0.84.0`, `core/package-manager.ts:906-931`). I nearly concluded it was dead config on the strength of that grep. Both entry shapes are handled, because pi treats them differently: a *file* entry is the extension, a *directory* entry is a container it walks (`collectResourceFiles` -> `collectAutoExtensionEntries`). A pattern entry (`+`, `-`, `!`) filters the collected set through the same globbing `packages` filters use, over a file set this module does not enumerate pi's way, so any pattern present yields `Undecided` rather than a guess. Found while answering a scoping-doc question about how the extension is registered and activated, which is the honest reason it surfaced now: nobody had enumerated pi's registration routes end to end since the first round. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Five `⚠️ ` markers across four TypeScript and mjs doc comments. The bold lead already carries the emphasis in every one of them -- "**Never throw from the handler.**", "**This is a structural guarantee, not schema validation.**" -- so the glyph added weight to text that was already the loudest thing in the block. Scoped to comments this branch introduced. The `✓`/`✗` in `diagnostics/render.rs` and the configure wizard stay: those are rendered status glyphs in `doctor` output, not decoration, and they predate this branch. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The descriptor comment said the floor is "the version the integration was verified against rather than a lower bound that is expected to keep holding" -- and then the shared validator used it as a plain floor, so `validate_version_output` accepted every stable version above it. `doctor` called pi 0.85.0 supported for a host that can move a hook shape in a minor release, where the symptom is missing spans rather than an error. The comment admitted the semantics were wrong for pi and the code kept them. `AgentDescriptor` gains `verified_through`. `None` for Claude Code and Codex, whose minors are additive, so the floor really is a floor and nothing changes for them. `Some((0, 84))` for pi. **Reported, not enforced.** An upper bound in `validate_version_output` would become `CliError::Launch` at `process::launcher::validate_agent_version` and refuse to start on pi 0.85.0 -- forcing a downgrade of pi to use Relay at all, over a version that has not been shown to be broken. So the band is a third outcome rather than a second error: below the floor errors, 0.84.x passes clean, above warns in `doctor` and logs a warning at launch. Verified against the binary across all five bands, not just in unit tests: 0.83.0 fails "is unsupported"; 0.84.0 and 0.84.9 are clean; 0.85.0 and 1.0.0 warn with the band named. The test also pins that Claude Code and Codex stay silent on a 99.0.0, so adding this field cannot start warning for them by accident. Docs aligned: "0.84.0 or newer" was the claim the code was making and neither was right. pi.mdx, the support matrix and the extension README now say 0.84.x, and say what happens above it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
The page explained itself by comparison -- a "How It Differs From Codex and Claude Code" section -- which neither sibling guide does, and which dates the page to the moment pi was the new one. Removed, with its load-bearing content kept where a reader looking for that fact would go rather than where the comparison put it: - The sidecar shape moves into the intro, stated on pi's own terms: hooks cannot be injected from outside the process, so they originate inside an extension, and all policy stays in the gateway. - "No persistent plugin install" moves into Requirements, next to the other install routes. - The queued round-trip cost, including the timeout multiplication, moves into Limitations, where an operator choosing `NEMO_RELAY_PI_TIMEOUT_MS` will meet it. - The pointer to Model Redirection is dropped; that section already says it. Structure now matches both siblings: Requirements, Transparent Run, Standalone Gateway, Captured Events, the pi-specific policy sections, Smoke Test, Verify Export, Troubleshoot LLM Lifecycle, Limitations. Two consequences of that: - `Troubleshoot Missing LLM Spans` becomes `Troubleshoot LLM Lifecycle`, the name both siblings use for the same section. - The three limitations that were free-standing top-level sections in the middle of the page -- gate authority, tool-result policy, interrupted sessions -- become subsections of one `Limitations` block at the end, matching Claude Code's `Hook Limitations` and Codex's `Cold-Start Limitation`. Top-level headings drop from 16 to 13. No prose was rewritten beyond the moves and the two paragraphs named above. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
Two problems, one of them mine from the restructure. **"No persistent plugin install" was the wrong claim.** `pi install <source>` creates exactly that -- a user-scoped extension pi loads on every later run, and the one the launcher then finds without any variable set. What does not exist is *Relay-managed* installation: `nemo-relay install pi` is unsupported because pi has no marketplace for Relay to install into. Both the pi guide and the support matrix now say that, and say that installing it yourself does persist. **"No-install local observability" was inherited and false here.** The phrase is copied from the Claude Code and Codex guides, where it is true because Relay injects hooks per run. It cannot be true for pi: a hook can only originate inside the extension, so on a clean machine `nemo-relay run --agent pi` fails until the extension is installed, copied, or pointed at. The section now says so, and says the command names the routes that fix it. **Fourteen headings lost their preceding blank line** when the restructure reassembled the page: sections were joined with a single newline, so each heading landed directly against a paragraph, fence, table or `</Warning>`. Fern renders it, which is why the tests stayed green and the linkcheck passed -- nothing checks this. Restored, and the sibling guides are the reason to care: the source should read the same way across the three. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Signed-off-by: Yuchen Zhang <yuchenz@nvidia.com>
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Overview
Adds pi (
@earendil-works/pi-coding-agent) as a third supported coding agent alongside Codex and Claude Code.The integration is a sidecar. A NeMo Relay-authored pi extension posts pi's lifecycle to the CLI gateway at
POST /hooks/pi, and the gateway builds the scope tree. Nothing in pi's process loads the Node binding. This shape is forced, not chosen: pi has no native hook-configuration file and its external event stream is observation-only, so hooks cannot be injected from outside the process. The extension is deliberately thin — all policy and all span construction stay in the gateway, on the same managed path Codex and Claude Code already use.Tool and turn activity are captured; a guardrail can block a real pi tool call, a model call, and the bang-prefixed inline shell a user types (
!cmd), which never reaches pi's tool registry. A request intercept can rewrite a tool call's arguments and pi executes the rewrite.Details
Most of this is additive — a new agent variant and a new route. The parts worth a reviewer's judgment are the decisions, not the inventory.
Shared code, where a regression would land. Three changes touch files Codex and Claude Code also depend on:
NormalizedEvent::TurnStartedand theturn_start/compactionlists onClassificationRules. Codex and Claude Code declare&[]for both, so their behavior is unchanged.AgentKind::has_explicit_turn_start(). For a harness that reports its own turn start, an event arriving between turns is genuinely between turns, so it is recorded on the session scope instead of manufacturing a turn to hold it. Only pi sets it.AgentInfo.checks,skip_serializing_ifempty, so Codex and Claude Code entries are byte-identical in JSON andschema_versionstays at 2.Argument transforms are constrained, not validated. An allow response may carry
{"tool_call": {"tool_call_id": "…", "input": {…}}}, applied to pi'sevent.inputin place. A transform may only rewrite the values of existing keys, preserving each value's JSON type. Adding a key, removing one, or changing a type is refused, and a refusal blocks rather than falling back to the original arguments, which would silently discard the policy. This is not schema validation, by choice — pi's tool set is per-session mutable, so a schema read once can go stale mid-session. Conditional-execution guardrails decide on the arguments pi proposed and are not re-run on the rewrite, matching the runtime's managed-call order.The inline-shell gate is named
user_bash, notbash. A guardrail receives only a tool name and arguments, so a policy can tell a command the user typed from one the model proposed only if the two arrive under different names. The trade-off is that a policy covering both must name both; the docs say so and a test asserts it.Model redirection is conditional, and the condition is the design. pi resolves
baseUrlper model from a generated catalog with no flag or generic override, so the extension points the active model's provider at the gateway withregisterProvider. That rewrite is provider-wide, so the decision verifies the provider's whole catalog, snapshotted before any registration. A provider mixing API families at different paths (Fireworks) is skipped rather than broken mid-session. Each decision that explains something is recorded as amodel_redirectmark, so a trace without LLM spans states its own reason.The registration also carries this invocation's proxy credential, which is what makes
nemo-relay run --agent piproduce LLM spans at all: a gateway the launcher started authenticates its own client before any intercept can rewrite the route, so a redirected call without it comes back401. It rides on the registration rather than a per-request hook for the same reason the session id does — only providers actually pointed at the gateway ever send it.nemo-relay doctor pipredicts failures nothing else reports. pi loads a project-scoped extension only for a trusted project, and its non-interactive modes never prompt — so the extension is dropped by a bare conditional that pi does not treat as a failure and never surfaces, and that the extension cannot surface either, because it is not running. Doctor also catches two copies loading at once (pi de-duplicates by path, not by package) and an install whose settings filters switch it off.Where should the reviewer start?
crates/cli/src/agents/shared/adapters.rsandcrates/cli/src/sessions/mod.rs.Known limitations, documented rather than papered over
tool_callhandler unless one blocks, sharing one mutableinputwith no re-validation. Loading first with-estops an earlier extension pre-empting the gate; it does nothing about a later one rewriting arguments after Relay authorized them. pi offers no ordering API, so the gate is authoritative over the model, not over the other extensions.private: trueand deliberately not published to npm. A file drop and a local-pathpi installboth work and cover user scope. A git URL is not a working source: pi clones the repository root, finds nopimanifest there, and loads nothing.Validation
cargo test -p nemo-relay-cli(1216 tests),just test-pi(97 Node tests),just docs-linkcheck(0 errors),cargo clippy --workspace --all-targets -- -D warnings.uv run pre-commit run --all-files: 30 of 33 hooks pass.cargo-deny,go fmtandgo vetfail only because those binaries are not installed on this machine, and no Go or dependency-manifest files are touched.v0.84.0session with a real model, reading the gateway's own ATOF output rather than asserting on hook status codes: turn scopes opening at pi's boundary, tool spans nested under their turn with attempt attribution, LLM spans nested inside their own turns, and a containment check confirming no span outlives the scope that opened it.block_llms = truerejecting a model call (recorded as a rejection mark, not a span, because the call never executed), and the inline-shell gate in pi's RPC mode — the only automatable path that reaches the bang prefix.--offline.Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)
🤖 Generated with Claude Code