What is pr-relay?
pr-relay is a Claude Code mod by HolyGrail that watches the session's pull request and wakes the session when it is merged or Codex reviews it. It is listed under Git & CI and has 19 GitHub stars.
| Type | Claude code mod |
|---|---|
| Author | HolyGrail |
| Repository | HolyGrail/claude-mods |
| Popularity | 19 GitHub stars |
| Category | Git & CI |
| Security | High risk (56/100) |
| Rank | #337 of 5,272 Claude Code mods; #14 in Git & CI |
| Last commit | 2026-10-12 |
| Stars this week | +2 |
| Hooks | 6 events |
| Sees | Bash calls, classic hooks, every prompt, mcp__pr-relay__watch calls |
| Draws on | AbovePrompt |
Is pr-relay safe to install?
pr-relay scores 56/100 on the MCPMods security check: High risk. Things to review: starts processes outside the sandbox; reads environment variables; watches every prompt or event. It passed 3 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes no files or config | Pass |
| Reads environment variables | Review |
| Watches every prompt or event | Review |
| Drives Claude (model calls, prompts) | Note |
| Passes claude plugin validate | Pass |
| No license detected | Note |
API calls in its code
| Call | What it means |
|---|---|
$.clock.after | |
$.clock.every | |
$.clock.now | |
$.command.run | drives Claude |
$.env.get | reads env vars |
$.process.run | runs processes |
$.prompt.submit | drives Claude |
$.session.cwd | |
$.session.id | |
$.session.repo | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.keys | keeps its own state |
$.store.set | keeps its own state |
$.tool.call | drives Claude |
$.tool.list | |
$.tool.register | drives Claude |
$.ui.invalidate | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
$.ui.toast | draws interface |
How do I install pr-relay?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/HolyGrail/claude-mods claude plugin validate ./claude-mods/plugins/pr-relay
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add HolyGrail/claude-mods && claude plugin install pr-relay@claude-mods
Or ask Claude to set it up
Paste this into Claude Code and it installs pr-relay for you:
Install the "pr-relay" Claude Code mod from https://github.com/HolyGrail/claude-mods/tree/main/plugins/pr-relay. Run claude plugin validate on it first and show me what it can access before you enable it.
More from HolyGrail/claude-mods
This repository has 5 Claude Code mods on MCPMods.
- cache-meter: Gauges how long the conversation's prompt cache stays warm, its hit ratio and misses, and what the next message re-cache (Low risk)
- notice-board: Shares notices with every session in the same repository, or on the machine (Low risk)
- usage-meter: Shows context, 5-hour, weekly and per-model weekly limit usage above the prompt (Low risk)
- zsh-safe: Lets Bash commands written for bash run under zsh: unmatched globs, leading =, and a missing timeout (Review before installing)