gr-reviewer (Claude Code plugin)

Multi-agent PR reviewer that runs 7 specialist AI agents in parallel (security, performance, observability, architecture, code-quality, testing, domain), consolidates their findings, and posts inline review comments on GitHub PRs.

This plugin is a thin wrapper around the gr CLI.

Install

In Claude Code:

/plugin marketplace add Immy6315/claude-marketplace
/plugin install gr-reviewer@immy6315-marketplace

Then bootstrap the underlying gr binary (one time, needs Go 1.25+):

bash <(curl -fsSL https://raw.githubusercontent.com/Immy6315/claude-marketplace/main/plugins/gr-reviewer/scripts/install.sh)

Or, if you prefer to install gr directly from source:

git clone https://github.com/Immy6315/GR.git ~/.gr-src
cd ~/.gr-src && ./scripts/install.sh

A binary installer (no Go required) is planned once tagged releases are published.

Use

From Claude Code, two slash commands are available:

| Command | What it does | |--------------------------------------------|-------------------------------------------| | /gr-reviewer:review-pr <PR URL> [--show] | Review a GitHub PR. Defaults to preview. | | /gr-reviewer:auth status | Inspect saved GitHub credentials. |

Or call the underlying CLI directly:

gr review --pr https://github.com/owner/repo/pull/123 --show
gr review --pr https://github.com/owner/repo/pull/123          # post for real
gr auth login
gr auth status
gr uninstall --purge                                            # remove gr

Authentication

gr resolves a GitHub token at run time in this order:

1. $GH_TOKEN
2. $GITHUB_TOKEN
3. gh auth token (GitHub CLI)
4. gr's keychain entry (set by gr auth login or interactive paste)
5. Interactive PAT paste (TTY only — gr prints a step-by-step guide)
6. Browser device flow (TTY only — needs GR_OAUTH_CLIENT_ID or a baked-in Client ID)

If the token can read the PR but lacks write scope, gr falls back to printing findings in your terminal instead of failing — re-run with a stronger token to actually post.

You do not need ANTHROPIC_API_KEY. gr reuses your Claude Code OAuth login.

Uninstall

From the plugin host:

/plugin uninstall gr-reviewer

To also remove the underlying CLI:

gr uninstall --purge

This removes both gr and GR symlinks, deletes the binary, and clears the keychain entry. It does NOT touch your shell rc, gh auth state, or Claude Code login.

Links

• gr CLI repo: https://github.com/Immy6315/GR
• gr README: https://github.com/Immy6315/GR/blob/main/README.md
• Issues: https://github.com/Immy6315/GR/issues