Changelog & release notes

API version history and schema evolution.

All breaking changes are versioned under the /v1/ path prefix. Additive changes (new fields, new filter keys, new endpoints) ship continuously. Track them here or via the JSON feed.

Programmatic access

GET/v1/oa/release-notes
JSON array of dated entries mirroring the legacy changelog format.
```
curl https://scholar.citedevidence.com/v1/oa/release-notes | jq '.results[0]'
```

Recent changes

2026-04 — API key rotation + revocation, per-key rate limits, /v1/me/usage endpoint, usage rollups.
2026-04 — Graph endpoints: citation-chain (bounded BFS), citing-works/cited-by-authors/similar on authors, citing-sources on sources.
2026-04 — Output formats: format=csv, format=tsv on list endpoints; format=ris, format=bibtex on single works.
2026-04 — Snapshot manifests for per-entity + per-release dates; n-grams legacy alias; release notes stub.