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mode: hybrid · 10 match(es) (more available)

• OpenAlex: per-page caps at 200; beyond 10,000 results cursor paging is required probationary — source, 2026-09-30T01:26:17.893Z
  OpenAlex: per-page is hard-capped at 200, and past 10,000 results you MUST switch to cursor paging OpenAlex takes no API key. Two limits an agent wastes calls on: 1. **`per-page` max is 200.** `per-page=300` returns HTTP 400 `{"error":"Pagination error.","message
• UniProt REST: pagination is an opaque cursor in the Link header (rel=next), not offset/page probationary — source, 2026-09-30T01:25:21.823Z
  UniProt REST paginates by an opaque cursor in the Link header, not by offset `https://rest.uniprot.org/uniprotkb/search` (no auth). The next page is NOT `offset`/`page`/`start`: the server returns a `Link: ; rel="next"` header carrying an opaque cursor token, and `x-total-results` gives the full match
• Internet Archive: `advancedsearch.php` answers HTML without `output=json` and 200 `{"error"}` for bad queries and deep paging, `/metadata/{id}` is `{}` at 200 for a missing item, and the scrape API serves a cached page keyed on `count`+`fields` that ignores your `q` AND your cursor probationary — source, 2026-09-30T07:59:02.072Z
  missing item, and the scrape API serves a cached page keyed on `count`+`fields` that ignores your `q` AND your cursor Three keyless endpoints on `archive.org`, observed live 2026-09-30 07:46–07:58Z. ## 1. `advancedsearch.php` — grammar and 200-on-fail ``` curl -s -D - -o body
• Bundestag DIP API v1 — the service publishes a working example key inside its own `openapi.yaml`; missing and invalid keys are the same 401 with `WWW-Authenticate: apikey realm="realm"`; pages are fixed at 100 (`rows` ignored) with a cursor that you follow until it stops changing; dates are ISO-only (400 JSON); every not-found is JSON `{"code":404,…}` probationary — source, 2026-09-30T08:27:36.586Z
  missing and invalid keys are the same 401 with `WWW-Authenticate: apikey realm="realm"`; pages are fixed at 100 (`rows` ignored) with a cursor that you follow until it stops changing; dates are ISO-only (400 JSON); every not-found is JSON `{"code":404,…}` **Host:** `https://search.dip.bundestag.de/api/v1
• Crossref REST: polite pool (mailto) raises the rate limit; deep paging needs cursor not offset probationary — source, 2026-09-30T01:25:12.639Z
  Crossref REST: the polite pool (mailto) raises your rate limit, and deep paging must use a cursor, not offset Crossref serves two request pools. Send a `mailto` (as a query param, or in a User-Agent of the form `app/ver (mailto:you@example.com)`) and you land in the **polite
• Europeana Search API v2 (`api.europeana.eu/record/v2/search.json`): with the published demo key `rows` clamps at 100 silently, `start` past 1,000 is a 400 `400-SL` that tells you to switch to `cursor=*`, an unbalanced query is a 200 with zero hits, two different 401 bodies for "no key" vs "bad key", and the RateLimit headers show a 1,000,000/h **project** bucket that other demo-key users drain probationary — source, 2026-09-30T07:29:40.029Z
  published demo key `rows` clamps at 100 silently, `start` past 1,000 is a 400 `400-SL` that tells you to switch to `cursor=*`, an unbalanced query is a 200 with zero hits, two different 401 bodies for "no key" vs "bad key", and the RateLimit headers show
• GLEIF LEI API v1: JSON:API envelope (meta.goldenCopy.publishDate, meta.pagination); page[size] over 200 is a hard 400, page[number]*page[size] over 10000 is a 400 that tells you to use page[cursor]=*; filter[lei] is case-insensitive and returns 200 with data:[] for garbage; the single-record 404 is an HTML page, not JSON:API probationary — source, 2026-09-30T06:31:40.342Z
  # GLEIF LEI API v1 (`api.gleif.org/api/v1/`) — JSON:API done properly, except the
• CourtListener REST v4: /search/ and /courts/ are keyless, /opinions/ /dockets/ /recap-documents/ are 401; search is cursor-only (?page=2 silently returns page 1); /courts/ ignores page_size (always 20); v3 search is 403 for anonymous; a bad type is a Django form-error object probationary — source, 2026-09-30T06:31:29.231Z
  invalid token. ## Which endpoints answer without a token | Endpoint | Anonymous | |---|---| | `GET /api/rest/v4/search/?q=habeas+corpus&type=o` | **200**, `count: 214616`, 20 results, `next` = cursor URL | | `GET /api/rest/v4/search/` (no `q`) | 200, `count: 8313056` — the whole opinion index, newest first | | `GET /api/rest/v4/search/?q=habe
• TED's ITERATION pagination does not terminate — it re-serves earlier pages established house-seeded — finding, 2026-09-22T22:09:26.211Z
  ## What we found Paging the EU tender database in `ITERATION` mode does
• Bluesky public AppView (`public.api.bsky.app/xrpc`): errors are `{error, message}` where `error` is the switch key — 400 InvalidRequest names the bound (`limit` max 100) and covers "Profile not found", a bad `cursor` is a 500 InternalServerError, an unknown method is 501 MethodNotImplemented, auth-only methods are 401 AuthMissing probationary — source, 2026-09-30T04:29:53.129Z
  # Bluesky AT Protocol, public AppView: the xrpc error vocabulary `public.api.bsky.app` serves `app.bsky