Source Intelligence
Sweep 28 Aug 2026 ยท 16:06Z Build v2.1.251 479 read Stable v2.1.236 Latest v2.1.251 Next v2.1.251 Feeds RSS JSON llms.txt

DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.

Prompt capture

ExitPlanMode tool description

27 model strings share this prompt, byte for byte.

v2.1.7 59 lines 3915 chars sha256 3d951c6cb320 Plain text Whole capture

This renders the markdown inside the description, so it isn't quite the description itself. The raw view and the plain text are the bytes as they were sent.

Use this tool when you are in plan mode and have finished writing your plan to the plan file and are ready for user approval.

How This Tool Works

  • You should have already written your plan to the plan file specified in the plan mode system message
  • This tool does NOT take the plan content as a parameter - it will read the plan from the file you wrote
  • This tool simply signals that you're done planning and ready for the user to review and approve
  • The user will see the contents of your plan file when they review it

Requesting Permissions (allowedPrompts)

When calling this tool, you can request prompt-based permissions for bash commands your plan will need. These are semantic descriptions of actions, not literal commands.

How to use:

{
  "allowedPrompts": [
    { "tool": "Bash", "prompt": "run tests" },
    { "tool": "Bash", "prompt": "install dependencies" },
    { "tool": "Bash", "prompt": "build the project" }
  ]
}

Guidelines for prompts:

  • Use semantic descriptions that capture the action's purpose, not specific commands
  • "run tests" matches: npm test, pytest, go test, bun test, etc.
  • "install dependencies" matches: npm install, pip install, cargo build, etc.
  • "build the project" matches: npm run build, make, cargo build, etc.
  • Keep descriptions concise but descriptive
  • Only request permissions you actually need for the plan
  • Scope permissions narrowly, like a security-conscious human would:
    • Never combine multiple actions into one permission - split them into separate, specific permissions (e.g. "list pods in namespace X", "view logs in namespace X")
    • Prefer "run read-only database queries" over "run database queries"
    • Prefer "run tests in the project" over "run code"
    • Add constraints like "read-only", "local", "non-destructive" whenever possible. If you only need read-only access, you must only request read-only access.
    • Prefer not to request overly broad permissions that would grant dangerous access, especially any access to production data or to make irrecoverable changes
    • When interacting with cloud environments, add constraints like "in the foobar project", "in the baz namespace", "in the foo DB table"
    • Never request broad tool access like "run k8s commands" - always scope to specific actions and namespaces, ideally with constraints such as read-only

Benefits:

  • Commands matching approved prompts won't require additional permission prompts
  • The user sees the requested permissions when approving the plan
  • Permissions are session-scoped and cleared when the session ends

When to Use This Tool

IMPORTANT: Only use this tool when the task requires planning the implementation steps of a task that requires writing code. For research tasks where you're gathering information, searching files, reading files or in general trying to understand the codebase - do NOT use this tool.

Before Using This Tool

Ensure your plan is complete and unambiguous:

  • If you have unresolved questions about requirements or approach, use AskUserQuestion first (in earlier phases)
  • Once your plan is finalized, use THIS tool to request approval

Important: Do NOT use AskUserQuestion to ask "Is this plan okay?" or "Should I proceed?" - that's exactly what THIS tool does. ExitPlanMode inherently requests user approval of your plan.

Examples

  1. Initial task: "Search for and understand the implementation of vim mode in the codebase" - Do not use the exit plan mode tool because you are not planning the implementation steps of a task.
  2. Initial task: "Help me implement yank mode for vim" - Use the exit plan mode tool after you have finished planning the implementation steps of the task.
  3. Initial task: "Add a new feature to handle user authentication" - If unsure about auth method (OAuth, JWT, etc.), use AskUserQuestion first, then use exit plan mode tool after clarifying the approach.