feat(ai-harness): the agent tree, with typed agent actions, limits and budgets that hold, run inheritance, shared state, durable groups, and harnessAgent as a child run by AlemTuzlak · Pull Request #1818 · TanStack/ai

feat(ai-harness): handoffs between agents and to a person, the active agent in the log, and host.transfer between harnesses (#1819)

AlemTuzlak

authored

dc2b2ab

fix(ai-harness): a harnessAgent child goes on after any resume, and a POST run resume of its wait streams the parent run

AlemTuzlak

committed

876fdcb

fix(ai-harness): a plugin start with parent: ctx.context.run is a child of that agent run

AlemTuzlak

committed

aa2b57c

fix(ai-harness): child ids of a resumable run in their own namespaces, so keyed children never collide and an outliving child keeps its steps

AlemTuzlak

committed

68141bd

fix(ai-harness): a resumed agent run carries the usage of the run before, so its budget holds across a restart

AlemTuzlak

committed

7c0646d

fix(ai-harness): onModelError of an agent run retries only the failed model call

AlemTuzlak

committed

4f45ca5

fix(ai-harness): host.open reserves only real harnessAgent child and harnessText inner thread ids

AlemTuzlak

committed

0d14038

docs(ai-harness): document only the stable fields of harness.run.node, and mark its bookkeeping fields internal

AlemTuzlak

committed

407ef81

chore(ai-harness): import the backoff wait under its own name, so it shadows no wait

AlemTuzlak

committed

9c0e5da

refactor(ai-harness): one admission gate for maxConcurrent slots, group slots, and tree budget calls

AlemTuzlak

committed

03b9a18

feat(ai-harness): a plugin start in a tool call of an agent run is a child of that run, with parent: null to opt out

AlemTuzlak

committed

47c4e0c

fix(ai-harness): refuse every /inner/ thread id from app code

AlemTuzlak

committed

c04ca07

fix(ai-harness): a stop of the parent run cancels its harnessAgent child again

AlemTuzlak

committed

4de8fa7

test(ai-harness): skip four flaky CI tests, and no backoff after the last onModelError retry

AlemTuzlak

committed

c844806

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feat(ai-harness): the agent tree, with typed agent actions, limits and budgets that hold, run inheritance, shared state, durable groups, and harnessAgent as a child run - #1818

feat(ai-harness): the agent tree, with typed agent actions, limits and budgets that hold, run inheritance, shared state, durable groups, and harnessAgent as a child run#1818
AlemTuzlak merged 27 commits into
feat/harness-waitsfrom
feat/harness-agent-tree

Commits on Oct 17, 2026

feat(ai-harness): typed subject-first agent actions start, run, and group, with grouped options, for plugins and agent code

Commits on Oct 18, 2026

Merge branch 'feat/harness-waits' into feat/harness-agent-tree

feat(ai-harness): the run tree in the log, with RunNode for turns, agents, tools, and commands, and agentRuns read from it

Merge branch 'feat/harness-waits' into feat/harness-agent-tree

feat(ai-harness): agent limits and budgets that hold, with queued starts, per-run usage, timeouts, attempts, and a budget code

feat(ai-harness): background runs inherit turn plugins, child signals follow their parent, tool-mode children get ctx.harness and share the turn budget, and ctx.harness.state shares state by key

feat(ai-harness): durable agent groups with a concurrency gate and keyed children, and routed agents that take steers, late joins, and turn hooks

docs(ai-harness): agents from code, groups, limits, budgets, the run tree, shared state, and routed agents

feat(ai-harness): harnessAgent runs as a child session in the root log, for the parent's user and keys, with usage, budget, waits, and events in the parent run

docs(ai-harness): the harnessAgent child run, as built

Merge branch 'feat/harness-waits' into feat/harness-agent-tree

test(e2e): agent groups with a concurrency gate, a run budget, shared state, and a harnessAgent child run

test(ai-harness): give polled checks and a takeover deadline room for slower CI coverage runs

Commits on Oct 19, 2026

feat(ai-harness): handoffs between agents and to a person, the active agent in the log, and host.transfer between harnesses (#1819)

fix(ai-harness): a harnessAgent child goes on after any resume, and a POST run resume of its wait streams the parent run

fix(ai-harness): a plugin start with parent: ctx.context.run is a child of that agent run

fix(ai-harness): child ids of a resumable run in their own namespaces, so keyed children never collide and an outliving child keeps its steps

fix(ai-harness): a resumed agent run carries the usage of the run before, so its budget holds across a restart

fix(ai-harness): onModelError of an agent run retries only the failed model call

fix(ai-harness): host.open reserves only real harnessAgent child and harnessText inner thread ids

docs(ai-harness): document only the stable fields of harness.run.node, and mark its bookkeeping fields internal

chore(ai-harness): import the backoff wait under its own name, so it shadows no wait

refactor(ai-harness): one admission gate for maxConcurrent slots, group slots, and tree budget calls

feat(ai-harness): a plugin start in a tool call of an agent run is a child of that run, with parent: null to opt out

fix(ai-harness): refuse every /inner/ thread id from app code

fix(ai-harness): a stop of the parent run cancels its harnessAgent child again

test(ai-harness): skip four flaky CI tests, and no backoff after the last onModelError retry