x402 census · 402oracle.com · a9108a15e2a4 · JSON
POST /verify/claim
unprobed
Is this claim true? Fact-check a single factual claim or statement against live web evidence before your agent relies on it. A fact-checking oracle, hallucination guard, and grounding and citation check for misinformation review: returns a verdict (supported / contradicted / insufficient), a confidence score, and source citations, as a signed attestation your agent can cite.
Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://402oracle.com/verify/claim |
| Method | POST |
| Price | $0.25 USDC = 250000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts eip155:137, eip155:42161 |
| payTo | 0x7a19cd388c7f69145fef09b960853e0a429b6f4a |
| Seller | 402oracle.com |
| Catalogs | cdp (row updated 2026-09-20) |
| Listed since (lower bound) | 2026-09-20 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-20 |
| CDP quality counters | 2 calls and 1 unique payers in 30 days, last call 2026-09-20 (catalog-reported, not verified on chain) |
| Category (keyword rule) | trading-signals |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | 402oracle · verification, fact-check, claim-adjudication, hallucination-guard, citations |
Unpaid probe (census of )
| Field | Value |
|---|---|
| Probe | not probed in this build |
No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.
On-chain facts for the payTo (public address)
| Field | Value |
|---|---|
| Distinct payers | 1 |
| Payments | 1 |
| USDC volume | $0.02 |
| Median payment | $0.02 |
| First / last payment | 2026-08-30 / 2026-08-30 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x7a19cd388c7f69145fef09b960853e0a429b6f4a (contract: EIP7702Proxy) |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"claim": "Company X was founded in 2019."
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"attestation": {
"confidence": 0.8,
"result": {
"citations": [
"https://example.com/about"
],
"verdict": "supported"
},
"subject": {
"claim": "Company X was founded in 2019."
},
"type": "claim_verification"
},
"signature": {
"alg": "ES256",
"jwks": "/.well-known/jwks.json"
}
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://402oracle.com/verify/claim' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'
The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.
Paid checks (x402, USDC on Base)
GET https://bazaar.agentexchange.work/r/a9108a15e2a4/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"a9108a15e2a4"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.
Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on 402oracle.com.