Contributor policy status API

Read a contributor’s signature for a project’s current policy version:

GET /project/collective/icalendar/contributor/<handle>/<policy-id>.json

Example response:

{
  "project": "collective/icalendar",
  "contributor": "alice",
  "policy": "ai-policy",
  "signed": true,
  "signed_at": "2026-11-10T12:00:00+00:00",
  "mandatory": true,
  "agreement": {
    "repository": "https://github.com/collective/icalendar",
    "path": "agreements/ai-policy.md",
    "commit": "0123456789012345678901234567890123456789"
  }
}

signed is false and signed_at is null when the current commit has not been signed, including when the handle has no known signature. A changed agreement commit invalidates current status while preserving old signatures. The returned commit is the file’s last edit within the configured reference; unrelated pushes leave it unchanged. This reports a signature, not whether every PR selected the policy.

Use the same URL with .svg instead of .json for an SVG badge:

[![AI policy](https://ai.pycal.org/project/collective/icalendar/contributor/alice/ai-policy.svg)](https://ai.pycal.org/contributor/alice/)

Both representations return Cache-Control: no-store. Unknown projects or policy identifiers return a JSON 404 error with error, title, detail and documentation fields. Private project records are unavailable to anonymous visitors. These endpoints are read-only and cannot create signatures or change choices.