Claimcheck

Two quiet ways open-source work dies, tracked before they cost you weeks:

1. Stale claims. Someone comments "I'll take this" on an issue, then vanishes. The issue still shows "unassigned," so the next volunteer writes code that collides with a ghost.
2. Parked fixes. Finished work sitting on a fork branch that never became a PR. Real commits, real diffs, zero visibility.

claimcheck scans for both. It is the follow-up to greenlight: greenlight asks "is this issue landable?", claimcheck asks "did everyone who said yes actually show up, and did their work ever ship?"

Install

npm install -g @reneturcios/claimcheck
# or
npx @reneturcios/claimcheck claims owner/repo

Needs Node 20+. Set GITHUB_TOKEN (or GH_TOKEN) for the 5000 req/hr authenticated rate limit; without it you get 60 req/hr. Responses are cached in ~/.cache/claimcheck.

CLI

Find stale claims in a repo

claimcheck claims modelcontextprotocol/python-sdk

Scans open unassigned issues, detects claim comments (explicit claims, work intentions, assignment requests; bots, maintainers, and the issue author are excluded), checks whether a linked PR ever appeared, and ranks the results with the oldest claims first:

Stale claims in modelcontextprotocol/python-sdk: 2 stale of 5 claimed issues (threshold 45d)

[STALE] modelcontextprotocol/python-sdk#3287
  Fix: handle empty result sets
  https://github.com/modelcontextprotocol/python-sdk/issues/3287
  claimant: helpfuldev, 63d ago (want-to-work)

[IN FLIGHT] modelcontextprotocol/python-sdk#3290
  ...
  claimant: shipitdev, 5d ago (explicit-claim)

Flags: --days 45 changes the stale threshold, --json prints machine output.

Claim age buckets

Find parked fixes on a fork

claimcheck parked CloudCorpRecords/pdfcn

Lists branches on a fork (excluding the default branch), compares each against the upstream default branch, and checks for open PRs from that fork. A branch ahead by 1+ commits with no open PR is PARKED:

Parked branches on CloudCorpRecords/pdfcn (upstream shadcn-labs/pdfcn): 1 parked of 4 branches

[PARKED_STALE] fix-typos
  ahead by 5 commit(s), last commit 20d ago
  no open PR on upstream

Parked age buckets (from the branch tip commit date)

Branches with an open PR show as IN_PR, branches even with upstream as EVEN. Neither is parked.

Claim status of one issue

claimcheck issue https://github.com/modelcontextprotocol/python-sdk/issues/3287

Every claimant found in the comments, their age bucket, and whether a linked PR exists.

MCP server

The same engines as tools, for agents that should check before they comment or code:

{
  "mcpServers": {
    "claimcheck": {
      "command": "npx",
      "args": ["-y", "claimcheck", "mcp"],
      "env": { "GITHUB_TOKEN": "ghp_your_token_here" }
    }
  }
}

Or run the server directly: npx @reneturcios/claimcheck mcp (stdio).

How detection works

Claim heuristics (clean reimplementation of the patterns proven in greenlight's dogfooding):

• Strong claims: "I'd like to take this", "please assign it to me", "I'm working on this", "I've started working on this", "PR incoming", and similar.
• Soft interest: "happy to help", "interested in this", "looking into this". Recorded, never treated as a claim.
• Excluded: bot accounts, repo maintainers (their "I'll take this" is triage, not a contestable claim), and the issue author unless they announce a real PR.

A claim with any linked PR is WORK_IN_FLIGHT at any age: the claimant did the work, it just has not landed yet. Only PR-less claims age into STALE and DEAD.

Development

npm install
npm test        # 23 offline tests, node:test via tsx
npm run build   # tsc to dist/

Engines (src/claims.ts, src/parked.ts) are pure functions over fetched data, fully testable offline against fixtures in test/fixtures/. src/github.ts holds the REST client (issues, comments, PR search, branches, compare, fork info) with file caching.

License

MIT, Rene Turcios 2026.

The toolkit

This tool is one of four in a lifecycle for open-source contribution work, all published under the @reneturcios npm scope and each available as a CLI and an MCP server (<tool> mcp):

1. gatefile (npx @reneturcios/gatefile) extracts a repo's contribution gates into a committed contribution-gates.json.
2. greenlight (npx @reneturcios/greenlight) pre-flights issues (GO / RISKY / TAKEN / GATED / STALE), consumes gatefile's output in check and scan, then claims, preps, and opens PRs.
3. claimcheck (npx @reneturcios/claimcheck) watches for stale claims and fixes parked on forks.
4. prwatch (npx @reneturcios/prwatch) triages your open PRs by what needs you right now.