Fact-check a claim against the live web
Fact-check a claim against the live web. Searches with Tavily and Exa, reads the best page with Firecrawl, and returns a verdict (supported, contradicted or unclear), a short explanation and source URLs. Typical response 4 to 8 seconds. If it cannot answer in time you get an error and are not charged.
Answeringour last check, 2026-10-03
1 of 1checks answered this week
221 msmedian answer time
$0.01listed price per call
$0.01price it asked us
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://bob.assimilatethis.com/factcheck
| Category | Everything else |
|---|---|
| Provider host | bob.assimilatethis.com |
| Networks | eip155:8453 |
| 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 |
|---|---|---|---|---|
| 2026-10-03 | valid payment request | 402 | $0.01 | 221 ms |
Example input (from the provider)
{
"method": "GET",
"queryParams": {
"claim": "The Eiffel Tower is in Berlin."
},
"type": "http"
}
Promised output schema (from the provider)
{
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"claim": {
"description": "A factual claim to check against live web sources",
"type": "string"
}
},
"required": [
"claim"
],
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"example": {
"properties": {
"explanation": {
"type": "string"
},
"sources": {
"items": {
"type": "string"
},
"type": "array"
},
"verdict": {
"enum": [
"supported",
"contradicted",
"unclear"
],
"type": "string"
}
},
"required": [
"verdict",
"explanation",
"sources"
],
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}