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Open Search – Multi-Source Search (Wikipedia + Hacker News + Crossref + Wikidata)
x402
Open Search – Multi-Source Search (Wikipedia + Hacker News + Crossref + Wikidata) is a paid API for AI agents from open-search.x402tookit.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-11-02).
Runs a single query across Wikipedia, Hacker News, Crossref academic papers, and Wikidata simultaneously, returning top hits from each source interleaved and labelled.
Price / call$0.05
Success—
StatusUnknown
How this service works
One query across Wikipedia, Hacker News, Crossref papers and Wikidata: top hits from each, source-labelled and interleaved.
Output
A structured response containing interleaved, source-labelled results from up to four sources (Wikipedia, Hacker News, Crossref, Wikidata). Each result includes title, URL, source label, and source-specific fields: Wikipedia entries include snippet and word count; Hacker News entries include points and comment count with discussion link; Crossref entries include DOI, year, venue, and citation count; Wikidata entries include Q-id, label, and description. The response also reports which sources answered, a degraded flag if any source failed, and per-source hit counts.
Example use cases
Academic and community overview of a topic
“I'm researching 'CRISPR gene editing' — can you pull together the best Wikipedia article, recent Hacker News discussions, top scholarly papers from Crossref, and any Wikidata entities all in one go?”
Tech concept research for a blog post
“I'm writing about 'WebAssembly' — search Wikipedia, Hacker News, academic papers, and Wikidata for it and show me 2 hits from each source so I can get a quick overview.”
Fact-checking a claim across diverse sources
“Can you look up 'mRNA vaccine efficacy' across Wikipedia, Hacker News, Crossref research papers, and Wikidata and show me what comes up from each?”
Technical details
Endpoint
GEThttps://open-search.x402tookit.com/search-all?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need a quick, broad survey of a topic from multiple authoritative and community sources in a single call, avoiding the overhead of querying Wikipedia, Hacker News, Crossref, and Wikidata APIs separately. It is ideal for research summaries, fact-finding, or topic overviews where both encyclopedic knowledge and academic and community context are all relevant. Prefer individual sibling endpoints if you only need results from one specific source.
Side effects
- One or more upstream sources (Wikipedia, HN, Crossref, Wikidata) may be unreachable, causing a degraded response with partial results and a 'notChecked' list
- Query string exceeds 200 characters returns a validation error
- perSource outside 1–5 range is rejected
- Empty or overly vague queries may return zero results from some sources
- Rate-limited or network-timeout from upstream APIs may reduce result counts
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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