Fact check, verify a claim
Fact check, verify a claim. Check a claim against the live web in one call: a Brave search, the top pages read, and a verdict from Llama 4 Scout using those sources only (supported, contradicted, mixed or unverified) with a short explanation, [n] citations and the sources. A model's reading of a few search results, not an editorial fact-check. Results are for immediate use only (Brave API terms). Use to screen a statement before an agent repeats or acts on it.
Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.
Endpoint
GET https://agent-data-tools.revmesh2074.workers.dev/ai/fact-check
| Category | Search and research |
|---|---|
| Provider host | agent-data-tools.revmesh2074.workers.dev |
| Networks | eip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| Payment schemes | exact |
| Self-reported calls, 30 days | 0 from 0 payers (the provider's figure, not ours) |
Our checks, last 30 days
| Day | Result | HTTP | Asked | Time |
|---|---|---|---|---|
| 2026-10-25 | valid payment request | 402 | $0.01 | 19 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"claim": "The x402 protocol uses the HTTP 402 Payment Required status code."
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"properties": {
"claim": {
"description": "The claim to check, at most 400 characters",
"examples": [
"The x402 protocol uses the HTTP 402 Payment Required status code."
],
"type": "string"
}
},
"required": [
"claim"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"claim": {
"type": "string"
},
"explanation": {
"type": "string"
},
"model": {
"type": "string"
},
"sources": {
"items": {
"properties": {
"n": {
"type": "number"
},
"title": {
"type": "string"
},
"url": {
"type": "string"
}
},
"type": "object"
},
"type": "array"
},
"terms": {
"type": "string"
},
"verdict": {
"type": "string"
}
},
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}