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1 Skipped Deployment

Project	Deployment	Actions	Updated (UTC)
docs	Skipped		Jul 21, 2026 8:18pm

PR Summary

Medium Risk
Touches agent tool transformation and in-process child workflow execution (authority, billing, recursion via call chain); changes are guarded by tests and server-only dynamic imports, but incorrect binding or merge behavior could affect tool availability or billing attribution.

Overview
Custom blocks (deploy-as-block) now work end-to-end as Agent tools instead of showing generic workflow-executor fields and failing at run time.

The tool panel surfaces each block’s real input sub-blocks (not workflowId / inputMapping), passes overlay-aware block config into getToolIdForOperation / getToolParametersConfig / getSubBlocksForToolInput so async-hydrated custom blocks can be added, and allows multiple custom blocks despite sharing workflow_executor as the underlying tool id.

Runtime routes custom blocks through a new deployed_block_executor tool (per-block wire ids like deployed_block_executor_custom_block_*, normalized for execution). transformBlockTool resolves org-scoped bindings via resolveCustomBlockToolBinding, builds id-keyed inputMapping schemas (shared assembleCustomBlockInputMapping), and skips tools that need required file inputs the model cannot fill. executeTool dynamic-imports runCustomBlockTool, which runs WorkflowBlockHandler in-process with server _context, inherited callChain, and partial child cost on failure—matching canvas authority without pulling executor/DB into the client bundle. Agent and Pi paths inject the binding resolver and use mergeToolParameters for preseeded vs LLM args.

Also registers workflow_executor and deployed_block_executor in the minimal dev tool registry.

^{Reviewed by Cursor Bugbot for commit 2db4e6c. Bugbot is set up for automated code reviews on this repo. Configure here.}

Greptile Summary

This PR makes custom blocks render and run as agent tools. The main changes are:

• Renders each custom block’s deployed input fields in the tool editor.
• Resolves custom-block bindings with workspace-scoped authority.
• Executes custom blocks through a server-only workflow runner.
• Preserves child workflow costs when execution fails.
• Registers the workflow executors in the full and minimal registries.

Confidence Score: 5/5

This looks safe to merge.

• Required file inputs are either supplied from preset values or the unusable tool is omitted.
• Failed child runs retain their incurred cost in the tool response.
• No blocking issues remain in the updated code.

Important Files Changed

Sequence Diagram

%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
    participant Editor as Tool Editor
    participant Provider as Tool Transformer
    participant Resolver as Block Resolver
    participant Agent as Agent Runtime
    participant Runner as Block Runner
    participant Workflow as Workflow Handler

    Editor->>Provider: Custom block configuration
    Provider->>Resolver: Resolve workspace-scoped binding
    Resolver-->>Provider: Latest fields and required inputs
    Provider-->>Agent: Field schema and preset mapping
    Agent->>Runner: Tool call with merged inputs
    Runner->>Workflow: Execute custom block
    Workflow-->>Runner: Curated output and cost
    Runner-->>Agent: Tool response

%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
sequenceDiagram
    participant Editor as Tool Editor
    participant Provider as Tool Transformer
    participant Resolver as Block Resolver
    participant Agent as Agent Runtime
    participant Runner as Block Runner
    participant Workflow as Workflow Handler

    Editor->>Provider: Custom block configuration
    Provider->>Resolver: Resolve workspace-scoped binding
    Resolver-->>Provider: Latest fields and required inputs
    Provider-->>Agent: Field schema and preset mapping
    Agent->>Runner: Tool call with merged inputs
    Runner->>Workflow: Execute custom block
    Workflow-->>Runner: Curated output and cost
    Runner-->>Agent: Tool response

_{Reviews (3): Last reviewed commit: "fix(custom-blocks): move executor tool i..." | Re-trigger Greptile}

@greptile

@cursor review

@greptile

@cursor review