x402 census · fastapi-service-5ag4.onrender.com · b87a29f32c63 · JSON
POST /verify/schema
unprobed
Independently verify an agent's output before you pay: structure, formats, ranges and cross-field rules like sums matching totals. Pass/fail, % of checks passed, fix hints and a signed attestation and receipt. $0.02 USDC, no signup, x402 v2.
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://fastapi-service-5ag4.onrender.com/verify/schema |
| Method | POST |
| Price | $0.02 USDC = 20000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp |
| payTo | 0x42a3c399f83BCcC3b9eEf81e65954a715D54855E |
| Seller | fastapi-service-5ag4.onrender.com |
| Catalogs | cdp (row updated 2026-09-30) |
| Listed since (lower bound) | 2026-09-30 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-09-30 |
| CDP quality counters | 3 calls and 2 unique payers in 30 days, last call 2026-09-30 (catalog-reported, not verified on chain) |
| Category (keyword rule) | identity/trust/kyc |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | Agent Output Verifier · json-schema, schema-validation, json-validation, structured-output, output-validation |
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 |
|---|---|
| Settlement history | unresolved: payTo not seen in the payer forensics (180 wallets' outbound history) or the Blockscout sample |
Declared input and output (extensions.bazaar)
{
"input": {
"body": {
"expected_schema": {
"properties": {
"name": {
"type": "string"
}
},
"required": [
"name"
],
"type": "object"
},
"submitted_output": {
"name": "Alice"
},
"task_id": "example-task-001"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 1021
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://fastapi-service-5ag4.onrender.com/verify/schema' -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/b87a29f32c63/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"b87a29f32c63"} 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 fastapi-service-5ag4.onrender.com.