x402 census · numberintel.dev · ebe74f1ef0fd · JSON
POST /v1/attest
unprobed
Signed settlement attestation: we make a REAL x402 purchase from your target endpoint (up to $0.1), grade the delivered response against its advertised schema, and return an EIP-191-signed attestation embedding the on-chain USDC receipt. Proof-of-real-delivery for directories, reputation systems and sellers.
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://numberintel.dev/v1/attest |
| Method | POST |
| Price | $0.25 USDC = 250000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x9A8dfBE7A11ee89dD59D80c93AB0EfE00D5D5767 |
| Seller | numberintel.dev |
| Catalogs | cdp (row updated 2026-09-28) |
| Listed since (lower bound) | 2026-09-28 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-28 |
| CDP quality counters | 4 calls and 1 unique payers in 30 days, last call 2026-09-28 (catalog-reported, not verified on chain) |
| Category (keyword rule) | inference/llm |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | none |
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 | $0.002 |
| Median payment | $0.002 |
| First / last payment | 2026-09-17 / 2026-09-17 |
| Sampler-shaped share of payments | 100.0% |
| Payers that are not samplers | 0 |
| Source | forensics-2026-09-30 |
| Address | 0x9A8dfBE7A11ee89dD59D80c93AB0EfE00D5D5767 |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"max_spend_usd": 0.05,
"method": "GET",
"target": "https://api.example.com/v1/data"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example": {
"attestation": {
"attestor": "0x3708...9234",
"delivery": {
"http_status": 200,
"is_json": true,
"paid_latency_ms": 900,
"schema_match_ratio": 1,
"sha256": "..."
},
"grade": "delivered",
"id": "a1b2c3d4e5f60718",
"purchase": {
"quote_usd": 0.01,
"receipt": {
"network": "eip155:8453",
"transaction": "0x..."
},
"settled": true
},
"target": "https://api.example.com/v1/data",
"version": 1
},
"signature": "0x..."
}
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://numberintel.dev/v1/attest' -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/ebe74f1ef0fd/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"ebe74f1ef0fd"} 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 numberintel.dev.