github-pr-reviewer

An automation that watches GitHub pull requests for a chosen label, runs one OpenHands review for each label event, and publishes the result back to GitHub.

In plain words
What is it for?
Use it to schedule reviews across one or more repositories, track processed label events, suppress stale results, and clean up review workspaces.
Why use it?
It removes the need to start reviews manually and ensures each review uses the pull request's exact submitted commit in a temporary workspace.

Skill for Claude CodeCodex

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/openhands/extensions/github-pr-reviewer
Any agent
npx skills add OpenHands/extensions --skill github-pr-reviewer
Clone the repo
git clone --depth 1 https://github.com/OpenHands/extensions

Made for: Claude Code, Codex.

Per session 59 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,273 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00059 $0.03273
Opus 5 $0.00030 $0.01636
Sonnet 5 $0.00012 $0.00655
Haiku 4.5 $0.00006 $0.00327

Measured 2d ago against content hash 73d743013473, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

github-pr-reviewer scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

The scan reads SKILL.md. This mod also ships 2 executable files (scripts/main.py, tests/test_main.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

curl -s https://api.github.com/user \
skills/github-pr-reviewer/SKILL.md · 316 lines

How it starts

The opening of the file, as written. The whole thing — 316 lines — stays where its author put it; the contents beside it link to each section on GitHub.

GitHub PR Reviewer Automation

Create a cron automation that watches one or more GitHub repositories for pull requests with a review trigger label, starts an OpenHands review conversation once per label event, and publishes the AI review to GitHub. Windows PowerShell equivalents for the setup, packaging, upload, and API-check shell snippets are in references/windows.md.

The automation script is deterministic: PR discovery, label-event tracking, state persistence, stale-result suppression, the repository checkout, and its removal are all handled in Python. The LLM is invoked only for the review itself.

The script prepares each review's workspace before the agent starts: the pull request's head commit is downloaded as a tarball and extracted to a directory of its own, which becomes the conversation's working directory. The agent is told not to clone, fetch, check out, or delete anything, and the script removes the checkout once the conversation has stopped. Nothing accumulates between runs.


Prerequisites

Required secret

Verify that the following secret is set in OpenHands Settings -> Secrets:

Secret name Token type Minimum permissions
GITHUB_PERSONAL_ACCESS_TOKEN Classic PAT repo for private repos or public_repo for public repos
GITHUB_PERSONAL_ACCESS_TOKEN Fine-grained PAT Contents: Read, Metadata: Read, Pull requests: Read and Write, Issues: Read and Write

Pull-request write access is required because the agent publishes a pull request review, not just an issue comment. A token with only Pull requests: Read will poll happily and then fail at the point of publishing.

When several repositories are monitored, the token must cover all of them.

Check with:

curl -s https://api.github.com/user \
  -H "Authorization: Bearer $GITHUB_PERSONAL_ACCESS_TOKEN" \
  | python3 -c "import json,sys; d=json.load(sys.stdin); print(d.get('login') or d.get('message'))"

If the token is missing or invalid, inform the user and stop.

Read the full file on GitHub · 316 lines

Files

What ships with it

9 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 316 lines · 59 tokens per session scan A 73d743013473

Subscribe to this mod's changes

github-pr-reviewer is a skill published in the GitHub repository OpenHands/extensions (137 stars, last pushed 4d ago), licensed MIT. It adds 59 tokens to every session and 3,273 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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