ossmate-mcp

MCP (Model Context Protocol) server that exposes OSS-maintainer tools to Claude Code and any other MCP-compatible client.

Part of the Ossmate project.

Tools (planned — Phase 4)

• github.list_open_prs(repo, limit)
• github.get_pr_diff(repo, number)
• github.list_merged_prs_since(repo, tag)
• github.list_stale_issues(repo, days)
• github.post_comment(repo, number, body) — gated by Claude Code PreToolUse hook
• changelog.parse(path)
• changelog.propose_bump(prs) — Conventional Commits → semver
• deps.read_lockfile(path) — auto-detects npm / poetry / cargo
• deps.check_advisories(deps) — osv.dev cache
• repo.detect_project_type(path)
• repo.list_recent_commits(since)

Resources (planned)

• templates://release-notes
• templates://issue-stale-nudge
• templates://welcome

Install

pip install ossmate-mcp

Use with Claude Code

The plugin install handles registration automatically. To register manually:

claude mcp add ossmate -- ossmate-mcp