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Arch Tools Fact-Check
x402
Arch Tools Fact-Check is a paid API for AI agents from archtools.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).
Verifies a claim or statement for factual accuracy, returning a fact-check result with supporting analysis
Price / call$0.02
Success—
StatusUnknown
How this service works
Arch Tools — fact-check
Output
A JSON object containing the fact-check result for the submitted claim, likely including a verdict (true/false/misleading/unverifiable), confidence level, and supporting analysis or explanation of why the claim is accurate or inaccurate.
Example use cases
Verifying viral social media claims
“I keep seeing people share that 'humans only use 10% of their brains' — can you fact-check that claim for me?”
Checking news headline accuracy
“Fact-check this headline claim for me: 'Coffee consumption has been shown to reduce the risk of Alzheimer's disease by 65%' — I want to know if there's any truth to it.”
Validating statistics in a report
“Before I publish this report, can you verify this statistic: 'The global electric vehicle market grew by 400% between 2018 and 2023'?”
Technical details
Endpoint
POSThttps://archtools.dev/v1/tools/fact-checkWhen to prefer
Choose this endpoint when you need automated, pay-per-use fact-checking without setting up a dedicated misinformation API. It is ideal for agents that need to verify individual claims on-demand, especially when context can be provided alongside the claim to improve accuracy. Best suited for checking discrete, self-contained statements rather than full documents.
Side effects
- Missing required 'claim' field returns a validation error
- Ambiguous or extremely vague claims may return low-confidence or unverifiable verdicts
- Claims about very recent events may return insufficient data errors
- Overly long or complex claims may exceed input limits
- Network timeouts on slow connections
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claim | string | The claim or statement to verify |
| context | string | Additional context about the claim |
Tags
x402
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