GatesAI Chat exposes a single 'fs' tool with a WRITE risk profile. The tool definition is visible in pseudoToolRescue.ts and shows a basic schema with three parameters (action, path, content). However, the tool description is generic and lacks critical safety guidance. The schema lacks enums for the 'action' parameter, no output schema is documented, and error handling is absent. The tool accepts free-form 'action' strings instead of constraining to known operations. No parameter validation rules, no recovery guidance on failure, and no audit trail documentation. This is a high-risk destructive tool with minimal safeguards.

• Replace free-form 'action' parameter with enum: {"type": "string", "enum": ["write"], "description": "File system action. Currently only 'write' is supported for creating or modifying files."}
• Expand tool description to 150-250 chars: explain that this writes/creates files in the workspace, when to use it (e.g., 'to save generated code or config'), and that it overwrites existing files without confirmation.
• Document output schema: {"success": boolean, "path": string, "message": string} with example: {"success": true, "path": "/workspace/file.txt", "message": "File written successfully"}
• Add error handling guidance: 'If path is outside workspace, returns error. If write fails due to permissions, returns error with recovery hint. Validate path before calling.'
• Add parameter 'overwrite' (boolean, default false) with description: 'If false, fails if file exists. If true, replaces existing file. Defaults to false to prevent accidental data loss.'

Inferred effective spec: 2026-07-28+.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry