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Canon Fact-Check API
x402
Canon Fact-Check API is a paid API for AI agents from v0-canon.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Verifies factual claims and searches academic papers and journals for AI agents using a natural language query
Price / call$0.05
Success—
StatusUnknown
How this service works
Fact-checking and academic research for AI agents. Verify claims, search papers, explore journals. USDC on Base.
Output
A JSON object with a success boolean and (implicitly) fact-check or research results for the submitted query, including verification of the claim against academic or authoritative sources.
Example use cases
Example prompt
“Can you fact-check this for me: 'Drinking eight glasses of water per day is scientifically required for good health' — search academic journals and tell me whether it holds up?”
Technical details
Endpoint
POSThttps://v0-canon.orbonomy.xyz/api/factcheckWhen to prefer
Choose this endpoint when an AI agent needs to verify a factual claim or find academic/peer-reviewed sources to support or refute an assertion — especially in research, journalism, or content validation workflows where a small per-call cost ($0.05 USDC) is acceptable and authoritative sourcing matters.
Side effects
- Missing required 'query' field returns a validation error
- Query too vague or ambiguous may return low-confidence or empty results
- Payment failure (USDC not sent or insufficient) triggers 402 response before processing
- Service unavailable returns non-200 status with no result body
- Query in unsupported language may return no matching academic sources
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| queryrequired | string |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| success | boolean |
Tags
x402
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