Source-bounded fact-check. Verify a claim against provided source text. Returns ...
https://x402.asterpay.io/v2/x402/ai/fact-checkOverview
Source-bounded fact-check. Verify a claim against provided source text. Returns verdict: supported, contradicted, or unverifiable. Does NOT search the web.
Protocol
x402
Price
$0.01
Payment Asset
USD Coin
Payment Network
eip155:8453
Category
tools/search
Provider
x402
Source
bazaar
Indexed
2026-06-17 22:15:20
Health
Status
healthy
Latency (p50)
2702ms
Uptime (30d)
100.0%
Reliability Score
75/100
Last Checked
2026-06-20 20:33:16
Last Healthy
2026-06-20 20:33:16
Consecutive Failures
0
x402 Payment Validation
Payment Requirements
Valid
Asset Verified
Known USDC
Facilitator
—
Input Schema
{
"body": {
"claim": "Apple reported revenue of $94.9 billion in Q1 2024",
"source": "Apple Inc. reported fiscal first-quarter revenue of $119.6 billion, a new record."
},
"method": "POST",
"schema": {
"properties": {
"claim": {
"type": "string"
},
"source": {
"type": "string"
}
},
"required": [
"claim",
"source"
],
"type": "object"
},
"type": "http"
}
Output Schema
{
"example": {
"claims_checked": 1,
"confidence": 0.98,
"evidence": "Source states $119.6B, not $94.9B as claimed.",
"latency_ms": 820,
"model": "llama-3.3-70b-versatile",
"summary": "Revenue figure directly contradicted by source.",
"verdict": "contradicted"
},
"schema": {
"properties": {
"confidence": {
"maximum": 1,
"minimum": 0,
"type": "number"
},
"evidence": {
"type": "string"
},
"summary": {
"type": "string"
},
"verdict": {
"enum": [
"supported",
"contradicted",
"unverifiable"
],
"type": "string"
}
},
"required": [
"verdict",
"confidence",
"evidence",
"summary"
],
"type": "object"
},
"type": "json"
}
Recent Health Checks
| Time | Status | HTTP | Latency | Error |
|---|---|---|---|---|
| 2026-06-20 20:33:16 | healthy | 402 | 2696ms | |
| 2026-06-20 06:05:39 | healthy | 402 | 2713ms | |
| 2026-06-19 11:36:10 | healthy | 402 | 2702ms | |
| 2026-06-19 06:35:51 | healthy | 402 | 2684ms | |
| 2026-06-19 03:26:48 | healthy | 402 | 2693ms | |
| 2026-06-18 21:08:54 | healthy | 402 | 2719ms | |
| 2026-06-18 17:46:36 | healthy | 402 | 2781ms | |
| 2026-06-18 07:51:29 | healthy | 402 | 2702ms | |
| 2026-06-18 00:23:13 | healthy | 402 | 2697ms |