Open data

Six reference-grade sources, all 1¢ flat: the Internet Archive’s Wayback Machine, Wikipedia + Wikidata, USPTO patents, the GDELT global news firehose, the OpenAlex scholarly graph, and the US Federal Register. These are primary or canonical sources. Prefer them over web search when the question is historical, encyclopedic, patent-, regulation-, or registry-shaped, and cite them over aggregators when they conflict. A set of MPP merchants adds normalized datasets on top: vehicles, drugs, clinical trials, product recalls, flights, sneaker markets, and paid Substack posts.

When to use which

Need	Call
What a page said at some date; deleted pages; dead links	`wayback/snapshots` → `wayback/fetch`
A full encyclopedia article as clean text	`wikipedia/search` → `wikipedia/page`
Disambiguate an entity; structured facts + cross-registry ids	`wikidata/search` → `wikidata/entity`
Set-shaped answers (“all X founded after Y in Z”)	`wikidata/sparql`
Patent portfolios, prior-art scans	`uspto/patents` · `uspto/assignees`
Non-US/non-English press; coverage shape over time	`gdelt/news` · `gdelt/timeline`
Most-cited papers, author profiles, citation graph	`openalex/works` · `openalex/work` · `openalex/authors`
US proposed + final rules, comment periods	`fedreg/search` · `fedreg/document`
Normalized vehicles, drugs, trials, recalls	`apex-db` · `rxatlas` · `trialbase-db` · `recallradar` (`search` → `get`)
Real-time flight status, airport boards	`aviationstack/flights` · `aviationstack/timetable`
Sneaker and streetwear market data	`kicksdb/product-search` · `kicksdb/sales-history`
One paid Substack post, summarized	`dripstack/post`

wayback: the internet’s history

Price: 1¢ per action
Source: Internet Archive

wayback/snapshots: list archived captures of a url; optional from/to timestamp prefixes (like 2023) and limit. Returns rows with timestamps to feed to fetch.
wayback/available: the closest single snapshot to a timestamp (YYYYMMDD). The quick rung.
wayback/fetch: the archived page itself ({ url, timestamp }), original bytes without archive chrome.

curl -X POST https://vaaya.ai/api/run/wayback/fetch \
  -H "Authorization: Bearer $VAAYA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/pricing", "timestamp": "20240101"}'

Use for: what a pricing/docs/landing page said at some date, deleted posts, dead links from old citations, product pivots over time. Compare two snapshots of the same URL to diff messaging. Timestamps are UTC YYYYMMDDhhmmss prefixes.

wikipedia + wikidata: canonical facts & entity resolution

Price: 1¢ per action

wikipedia/search (q, optional lang) → titles; wikipedia/page (title) → the full article as clean plain text, cheaper than scraping.
wikidata/search (q) → Q-ids. Start here to disambiguate any entity before fanning out to other sources.
wikidata/entity (id, e.g. Q95) → all structured claims: founding date, HQ, subsidiaries, execs, and cross-registry identifiers (LEI, tickers, Crunchbase, ROR).
wikidata/sparql (query) → set-shaped answers no search engine can do. Keep queries LIMITed; the upstream timeout is 60s, so small queries only.

uspto: US patents

Price: 1¢ per action
Coverage: applications + grant metadata, newest-first

uspto/patents: q is a plain full-text string ("machine learning") or field-qualified (applicationMetaData.inventionTitle:"neural network"). Optional date_gte/date_lte (effective-filing-date window), limit (≤100), offset.
uspto/assignees: pass organization; returns that applicant’s filings. The “does X hold patents” lookup before a patents sweep.

Use for patent portfolios in company research, prior-art scans, and who’s patenting in a space. EU trademarks are a different register: /x402/eu-trademark-search (75¢) on Compliance & KYB.

gdelt: global news firehose

Price: 1¢ per action
Coverage: 65 languages, ~15-min latency

gdelt/news: search worldwide press. query supports inline operators: sourcecountry:chile, sourcelang:spanish, domain:reuters.com, "exact phrase". Window via timespan (1d, 2w, 3m) or startdatetime/enddatetime (YYYYMMDDhhmmss). maxrecords ≤250.
gdelt/timeline: coverage-volume or tone series (mode: timelinevol | timelinetone) for narrative tracking and event detection.

curl -X POST https://vaaya.ai/api/run/gdelt/news \
  -H "Authorization: Bearer $VAAYA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"query": "lithium sourcecountry:chile", "timespan": "2w", "maxrecords": 50}'

Use GDELT when the story is non-US/non-English or you need press-coverage shape over time. For mainstream recent headlines, brave/news is still the first rung; see Web search.

openalex: the scholarly graph

Price: 1¢ per action
Coverage: 250M+ works

openalex/works: search and/or filter (from_publication_date:2024-01-01,is_oa:true,cited_by_count:>100), per_page ≤50. Metadata + abstracts + citation counts + OA links.
openalex/work: one work by W… id or DOI: authorships, per-year citations, referenced/related works.
openalex/authors: disambiguated researcher profiles (h-index, affiliations) for expert-finding and founder/team technical due diligence.

OpenAlex adds the citation graph and filters on top of quick keyword paper lookups. Use it when you need “most-cited since X”, author-centric views, or open-access full-text links. For managed multi-step research runs, see Research.

fedreg: US Federal Register

Price: 1¢ per action
Coverage: proposed + final rules since 1994

fedreg/search: term + optional type (RULE | PRORULE | NOTICE | PRESDOCU), agency slug (e.g. securities-and-exchange-commission), date_gte/date_lte, per_page.
fedreg/document: full metadata by document number: abstract, docket ids, CFR refs, comment deadlines, full-text links.

Use for upstream regulatory signal (rules while still PRORULE), comment-period tracking, and what an agency has done about X. Pairs with the edgar/* actions on Public records for what companies filed in response. EU-side equivalents (eu-regulation-search, eu-ai-act-classify) live on Compliance & KYB. fedreg tracks rulemaking; for the current CFR text, use GovLaws on Public records.

Normalized data merchants

Four merchants publish normalized datasets behind one shape: search (10¢) takes query params and returns matching records, then get (2.5¢) fetches one record by id from a prior search. Every service in this section and the three below is an MPP merchant: no API key, you pay the merchant’s actual charge per call, and the listed prices are caps.

Service	Data	Search params
`apex-db`	Vehicle variants: specs, emissions, recalls, source-linked	`make`, `model`, `year`, `q`
`rxatlas`	US drug products from FDA, DailyMed, and RxNorm	`q` (name or ingredient), `ndc`
`trialbase-db`	Clinical trials from ClinicalTrials.gov, CTIS, and EudraCT	`q` (condition or intervention), `status`, `phase`
`recallradar`	Consumer-product safety notices from six public authorities	`q` (product or brand)

curl -X POST https://vaaya.ai/api/run/rxatlas/search \
  -H "Authorization: Bearer $VAAYA_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"q": "semaglutide"}'

aviationstack: flight status

Price: ~0.5¢ per action

aviationstack/flights: real-time flight status. Query params include flight_iata (like AA100), dep_iata, arr_iata, and airline_iata.
aviationstack/timetable: an airport’s departure or arrival board. Params: iataCode (airport) and type (departure or arrival).

kicksdb: sneaker and streetwear markets

Price: ~0.05¢ per action

kicksdb/product-search: search products on one marketplace. Params: marketplace (stockx, goat, shopify, snkrs, kream, novelship) and query.
kicksdb/product-detail: one product by marketplace + id. Supports stockx, goat, shopify, kream.
kicksdb/sales-history: sales history for a product by marketplace + id. Supports stockx and goat.

dripstack: paid Substack content

Price: $0.05 to $1 per post, set by the publisher

dripstack/post buys the synthesized summary of one Substack post. Params: publication (a publication slug like chipstrat.com) and post (the post slug). Posts priced above $1 are refused.