{"rid":"crawler-scraper/openalex","card":{"rid":"crawler-scraper/openalex","eid":"openalex","topic":"crawler-scraper","slug":"openalex","provider":"OpenAlex","url":"https://help.openalex.org/access/pricing/","domain":"openalex.org","category":"scholarly index","tier":null,"verdict":"qualifies","vorder":0,"grp":"usable","confidence":"documented","binding":"request-rate","identity_kind":"email","identity_basis":"stated","needs_card":1,"needs_phone":0,"needs_id":0,"needs_institution":0,"country":null,"crypto":null,"interfaces":"rest","egress_metered":0,"per_object_bytes":null,"retention_days":null,"verified_at":"2026-10-22T00:00:00.000Z","verified_basis":"live","checked_on":"2026-10-22","stale_on":"2026-11-21","n_evidence":4,"usd_month":null,"usd_per_tb_month":null,"summary":"USD 1 of API usage a day with a free key; keyless requests at 10 a second","duplicate_of":null,"n_unknown":3},"record":{"topic":"crawler-scraper","slug":"openalex","provider":"OpenAlex","url":"https://help.openalex.org/access/pricing/","category":"scholarly index","verdict":"qualifies","confidence":"documented","confidence_note":"the quota and the rate limit are documented; the works API was called directly on 2026-10-22 (200, 30,469 bytes, meta.count 189601, X-RateLimit-Cost-USD 0.001), so the read path is probed and the verdict is unqualified","verified_at":"2026-10-22T00:00:00.000Z","free_tier":{"stated":"USD 1 of API usage a day with a free key; keyless requests at 10 a second","unit":"requests","metered_on":"request-count","source_url":"https://help.openalex.org/access/pricing/","read_on":"2026-10-22","notes":""},"per_object_cap":{"stated":"not applicable: the unit is a request","bytes":null,"source_url":"https://help.openalex.org/access/pricing/","notes":""},"retention":{"stated":"the daily budget resets at midnight UTC","days":null,"source_url":"https://help.openalex.org/access/pricing/","notes":""},"egress":{"terms":"not applicable: JSON answers","metered":false,"free_allowance":null,"price_per_tb":null,"source_url":"https://help.openalex.org/access/pricing/"},"interface":["rest"],"interface_detail":"REST; cursor paging past the first page needs a free key","tooling":"not stated","chaining":"The works index behind the broker's research service; pages by an opaque cursor bound to the query","limits":[{"kind":"request-rate","value":"10 requests a second keyless, 30 with a free key, 50 on an annual plan","source":"https://docs.openalex.org/how-to-use-the-api/rate-limits-and-authentication"},{"kind":"per-object-cap","value":"basic paging stops at 10,000 results; beyond that needs cursor paging and a key; per_page maximum 100","source":"https://docs.openalex.org/how-to-use-the-api/rate-limits-and-authentication"},{"kind":"request-rate","value":"USD 1 of usage a day free, no payment method; prepaid usage in USD 1 increments expires 3 months after purchase","source":"https://help.openalex.org/access/pricing/"}],"binding":"request-rate","limits_note":"","identity_cost":{"kind":"email","detail":"a free account gives the key; no payment method required","country":null},"reliability_note":"no reliability event recorded","price_per_tb_month":null,"evidence":[{"url":"https://help.openalex.org/access/pricing/","date":"2026-10-22","proved":"every account gets USD 1 of API usage per day for free; no payment method required; prepaid usage expires 3 months after the most recent purchase"},{"url":"https://docs.openalex.org/how-to-use-the-api/rate-limits-and-authentication","date":"2026-10-22","proved":"no key 10 requests a second, free key or prepaid 30, annual 50; per_page maximum 100; basic paging limit 10,000 results; cursor paging requires a key"},{"url":null,"date":"2026-10-22","proved":"200, provider openalex, 3 works, a cursor, and page 2 returned three different DOIs"},{"url":"probe:https://api.openalex.org/works?search=retrieval+augmented+generation&per-page=2","date":"2026-10-22","proved":"direct call without the broker: 200, 30,469 bytes, meta.count 189601, X-RateLimit-Cost-USD 0.001 and X-RateLimit-Credits-Used 10, X-RateLimit-Limit 1000"}],"notes":"A dollar a day is a large allowance for this index because a search costs a few credits. The 10,000-result paging wall is the constraint that matters for a literature sweep."},"claims":[{"path":"$.free_tier.stated","kind":"free-quota","num":null,"unit":null,"per":null,"currency":null,"usd":null,"fx_date":null,"parse":"unparsed"},{"path":"$.limits[0].value","kind":"limit:request-rate","num":10,"unit":"requests","per":null,"currency":null,"usd":null,"fx_date":null,"parse":"ok"},{"path":"$.limits[1].value","kind":"limit:per-object-cap","num":null,"unit":null,"per":null,"currency":null,"usd":null,"fx_date":null,"parse":"unparsed"},{"path":"$.limits[2].value","kind":"limit:request-rate","num":null,"unit":null,"per":null,"currency":null,"usd":null,"fx_date":null,"parse":"unparsed"}],"unknown":[["$.evidence[2].url","private-url"],["$.reliability_note","none-observed"],["$.tooling","not-stated"]],"history":[],"drift":[]}