x402 census · list-smith-production.up.railway.app · 11671388e23e · JSON
POST /v1/grade
method-gated
Grade one x402 route's Bazaar discovery metadata. Returns the diagnosis only: both x402 SDK validator verdicts, the schema-quality score, itemized defects with severities (hollow output schemas, over-500-char descriptions, wrong asset addresses, failed validation), and a 0-100 grade. Use this when you operate an x402 route and want to know exactly what is broken before paying for the repair.
Verdict: not verified by an unpaid GET. 405/400: the 402 sits behind the declared method. This says nothing about whether the route works when called as declared.
Facts from the catalogs
| Field | Value |
|---|---|
| URL | https://list-smith-production.up.railway.app/v1/grade |
| Method | POST |
| Price | $0.10 USDC = 100000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 |
| Network | eip155:8453 (base) |
| payTo | 0x097f9685D1e0752bF8B02d61E5Ce9be7eA0FBA7F |
| Seller | list-smith-production.up.railway.app |
| Catalogs | cdp (row updated 2026-10-25) |
| Listed since (lower bound) | 2026-10-25 (earliest catalog timestamp; catalogs report last-update times only) |
| Last catalog update | 2026-10-25 |
| CDP quality counters | 3 calls and 2 unique payers in 30 days, last call 2026-10-25 (catalog-reported, not verified on chain) |
| Category (keyword rule) | trading-signals |
| Templated path | no |
| x402Version in catalog | 2 |
| Service name / tags | list-smith · x402, bazaar, discovery, validation, schema |
Unpaid probe (census of 2026-10-25)
| Field | Value |
|---|---|
| Probed at | 2026-10-25T21:15:44.110Z |
| HEAD | 405 |
| GET | 405 |
| Verdict | method-gated 405/400: the 402 sits behind the declared method |
| 402 carried in | n/a |
| x402Version in the 402 | n/a |
| accepts[0] | none |
| Live amount equals catalog price | not comparable |
| Live payTo equals catalog payTo | not comparable |
| extensions.bazaar in the 402 | no |
| PAYMENT-REQUIRED header | no |
| WWW-Authenticate offer | none |
| Content type / server / CORS | application/json / railway-hikari / none |
| Latency | 128 ms |
| Error | none |
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": {
"resource_url": "https://target.example.com/v1/thing"
},
"bodyType": "json",
"method": "POST",
"type": "http"
},
"output": {
"type": "json",
"example_truncated": true,
"chars": 1096
}
}
Try it (unpaid: shows the 402)
curl -si -X POST 'https://list-smith-production.up.railway.app/v1/grade' -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/11671388e23e/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"11671388e23e"} 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 list-smith-production.up.railway.app.