github-repo-assistant

github-repo-assistant

MCP server for interacting with GitHub pull requests and issues via natural language. Provides tools to list PRs, inspect diffs, check CI status, and post review comments with write-safety guards.

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README

github-repo-assistant

An MCP server that lets any MCP client (Claude Desktop, Claude Code, etc.) inspect and interact with GitHub pull requests and issues via natural language, using the GitHub REST API.

Tools

  • list_open_prs(repo) - list open pull requests
  • get_pr_diff(repo, pr_number) - file-by-file diff for a PR
  • list_failing_checks(repo, pr_number) - failing CI checks on a PR's latest commit
  • list_open_issues(repo) - list open issues
  • post_review_comment(repo, pr_number, body, confirm) - post a PR comment (guarded, see below)

repo is always in "owner/repo" form.

Write-action safety

post_review_comment is the only tool that changes anything on GitHub, and it's gated two ways:

  1. Environment flag - refuses outright unless ALLOW_WRITES=true is set.
  2. Confirm step - the first call (confirm=False, the default) only returns a preview of what would be posted; nothing is sent until you call it again with confirm=True.

Setup

python -m venv .venv
source .venv/bin/activate
pip install -r requirements.txt
cp .env.example .env
# edit .env: set GITHUB_TOKEN to a fine-grained PAT scoped to the repos you want

Run

python server.py

Point an MCP client at this file via stdio transport (same pattern as any other local MCP server).

Status

Scaffolded - tools are implemented but not yet tested against a live repo.

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