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WhatChUNeed Fact Check API
x402
WhatChUNeed Fact Check API is a paid API for AI agents from whatchuneed.vercel.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Verifies claims and checks factual accuracy of a given text input, returning a structured fact-check result.
Price / call$0.05
Success—
StatusUnknown
How this service works
320+ pay-per-call API endpoints across accommodation, LLM, code execution, crypto, medical, finance, and more. One API, one payment. Powered by x402 protocol.
Output
Returns a structured result object containing the fact-check outcome (e.g., true, false, misleading, unverified) and supporting details, along with a status field indicating whether the request was processed successfully.
Example use cases
Verify viral social media claim
“Someone shared a post saying 'Humans only use 10% of their brains' — can you fact-check that statement for me?”
Validate news article statistic
“Before I cite this in my report, can you verify the claim that 'Global average temperatures have risen by 2 degrees Celsius since 1850'?”
Check historical fact accuracy
“I want to confirm this before my presentation — fact-check the statement 'The Berlin Wall fell on November 9, 1989' for me.”
Technical details
Endpoint
POSThttps://whatchuneed.vercel.app/api/verify/factcheckWhen to prefer
Choose this endpoint when you need a quick, pay-per-call fact verification without managing a subscription or API key setup. Ideal for agents that occasionally need to validate claims inline during workflows, especially when integrated into x402-compatible payment flows. Suitable for low-volume spot-checking rather than bulk verification pipelines.
Side effects
- Empty or missing 'input' field returns a validation error
- Extremely vague or ambiguous claims may return an unverifiable/inconclusive result
- Claims in obscure languages or domains may produce low-confidence results
- Network timeouts if the backend verification service is slow
- $0.05 USDC payment failure if wallet is underfunded
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | string | Request input |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| result | object | Response data |
| status | string |
Tags
x402
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