numberintel.dev
x402 shop checkup: audits any x402 seller the way uptime raters, index crawlers, paying agents and the CDP Bazaar see it (plain-GET probes, 402 envelopes, sample inputs, discovery files, Bazaar freshness) and returns a graded report with a fix for every finding. Read-only, nothing is purchased.
The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 1 USDC on Base to 0x9A8d…D5767. The signed payment is good for 5 minutes.
- Paid to
- 0x9A8d…D5767
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 1000000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x9A8dfBE7A11ee89dD59D80c93AB0EfE00D5D5767",
"amount": "1000000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://numberintel.dev"
}
},
"output": {
"type": "json",
"example": {
"note": "Read-only checkup: nothing was purchased from the target.",
"grade": "A",
"score": 100,
"bazaar": {
"listed": 3
},
"origin": "https://numberintel.dev",
"summary": "A (100/100): 0 problem(s) and 0 warning(s) across 10 paid endpoint(s).",
"endpoints": [
{
"path": "/v1/batch",
"checks": [
{
"id": "get_probe",
"detail": "Plain GET answers with a 402 price quote (what uptime raters expect).",
"status": "pass"
},
{
"id": "sample_input",
"detail": "Sample input present and uses real addresses.",
"status": "pass"
}
],
"method": "POST"
}
],
"top_fixes": [],
"site_checks": [
{
"id": "openapi",
"detail": "/openapi.json found and parseable.",
"status": "pass"
},
{
"id": "llms_txt",
"detail": "/llms.txt found.",
"status": "pass"
}
]
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"url"
],
"properties": {
"url": {
"type": "string",
"description": "https URL of the x402 shop (origin or one endpoint)"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-08 00:49Z
- Last indexed by Roundhouse
- 2026-10-11 00:50Z
- Last enriched (probe, favicon, geo)
- 2026-10-08 04:16Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 402
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 5 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service numberintel.dev and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=numberintel.dev' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://numberintel.dev/v1/shop-check, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.