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docs: pull_request_target guidance and base-action trust model (#1250)

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* docs: add pull_request_target/workflow_run guidance and base-action trust model

Adds a security.md section on safe checkout patterns under
pull_request_target/workflow_run, and a trust-model section to the
base-action README clarifying that callers are responsible for the
working directory and prompt being trusted.

🏠 Remote-Dev: homespace

* docs: refine PRT/workflow_run guidance — root checkout + workflow_run ref

Second example now checks out the base ref at the workspace root before
the head-ref subdirectory checkout (this action expects a git repo at
the root). Adds the workflow_run ref form, drops the PRT-specific
gh-pr-diff hint from the first example, and generalises the closing
line to cover both event types.

🏠 Remote-Dev: homespace

* docs: use actions/checkout@v6 in examples (consistency)

🏠 Remote-Dev: homespace
This commit is contained in:
Octavian Guzu
2026-04-28 10:01:48 -07:00
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parent 11a9dadd19
commit c93e8fe879
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@@ -4,6 +4,14 @@ This GitHub Action allows you to run [Claude Code](https://www.anthropic.com/cla
For simply tagging @claude in issues and PRs out of the box, [check out the Claude Code action and GitHub app](https://github.com/anthropics/claude-code-action).
## Trust model
This action is a thin wrapper that installs and runs Claude Code with the inputs you provide. It does **not** enforce any trust boundaries on its own. Running this action in a directory is equivalent to running Claude Code in that directory — Claude reads project-level configuration (`.claude/`, `CLAUDE.md`, `.mcp.json`, etc.) from the working directory, and the action's own setup steps run from there as well.
**The caller is responsible for ensuring the working directory and prompt are trusted.** If your workflow processes untrusted input (issues, fork pull requests, external comments), use [`anthropics/claude-code-action`](https://github.com/anthropics/claude-code-action) instead — it provides actor permission checks, restores project configuration from the base ref in PR contexts, and is the supported path for those scenarios.
See [Claude Code's security documentation](https://docs.anthropic.com/en/docs/claude-code/security) and the [GitHub Actions guidance on `pull_request_target`](https://securitylab.github.com/research/github-actions-preventing-pwn-requests/) for background.
## Usage
Add the following to your workflow file: