x402 Seller Audit
Full audit of your x402 API in one call, with a prioritized fix list. Lints /openapi.json, /.well-known/x402 and every paid route's 402, checks up to 10 routes in depth (payable EIP-712 domain, resource URL, CDP validate, Bazaar listing, payers, search rank vs competitors' prices), adds our 30-day uptime, and makes one real purchase to prove payment, settlement and the answer work (Base Sepolia if accepted, else Base up to $0.05, paid by us).
SearchUnknowneip155:8453Exactvia cdp
x402Seller-toolsAuditBazaarDeveloper-tools
Settlements · 30d
330
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days.
$2.02
Verified settled volume
330 settlements proven x402 by their on-chain EIP-3009 marker.
$0.250
Listed price
As published in the catalog. Always read the live 402 before paying.
4
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-10-26 13:08Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8The wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
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.
0.25USDC≈ $0.25 USD
on Base · exact scheme
Pay 0.25 USDC on Base to 0xe6f7…3c3f8. The signed payment is good for 5 minutes.
- Paid to
- 0xe6f7…3c3f8
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 250000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
"amount": "250000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"body": {
"origin": "https://api.example.com"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"lint": {
"ok": false,
"errors": 1,
"routes": [],
"findings": [],
"warnings": 0,
"paid_routes": 3,
"checked_routes": 3
},
"name": "Example API",
"fixes": [
{
"check": "eip712_domain[0]",
"level": "fail",
"where": "POST /v1/convert",
"message": "exact on eip155:8453: extra says name \"USDC\", version \"2\", but the token contract's EIP-712 domain is name \"USD Coin\", version \"2\". Buyers sign with the values in extra, so every payment signature will be rejected.",
"priority": 1
},
{
"check": "lint",
"level": "fail",
"where": "/openapi.json",
"message": "no operation has x-payment-info, so no paid route is advertised",
"priority": 2
},
{
"check": "bazaar_index",
"level": "warn",
"where": "GET /v1/weather",
"message": "Not in the CDP Bazaar index.",
"priority": 3
}
],
"origin": "https://api.example.com",
"routes": [
{
"path": "/v1/weather",
"checks": [],
"market": [
{
"query": "weather",
"your_rank": 2,
"median_price_usd": 0.002
}
],
"method": "GET",
"summary": {
"fail": 0,
"info": 3,
"pass": 12,
"warn": 1
},
"endpoint": {
"method": "GET",
"listing": {
"listed": true,
"calls_30d": 40,
"payers_30d": 7
}
},
"price_usd": 0.001,
"uptime_30d": {
"probes": 120,
"uptime": 0.99,
"median_ms": 180
}
}
],
"summary": {
"fail": 2,
"warn": 1,
"purchase": "paid",
"paid_routes": 3,
"routes_checked": 3
},
"purchase": {
"ms": 2140,
"url": "https://api.example.com/v1/weather",
"bytes": 84,
"method": "GET",
"status": 200,
"network": "eip155:84532",
"outcome": "paid",
"preview": "{\"city\":\"Tokyo\",\"temp_c\":18}",
"explorer": "https://sepolia.basescan.org/tx/0x5e1d3a1f7c8b9a0e2d4c6b8a0f1e3d5c7b9a1f3e5d7c9b1a3f5e7d9c1b3a5f7e",
"price_usd": 0.001,
"transaction": "0x5e1d3a1f7c8b9a0e2d4c6b8a0f1e3d5c7b9a1f3e5d7c9b1a3f5e7d9c1b3a5f7e",
"content_type": "application/json"
},
"audited_at": "2026-10-26T03:00:00.000Z"
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"origin"
],
"properties": {
"origin": {
"type": "string",
"maxLength": 300,
"description": "https origin of the x402 API, such as https://api.example.com"
},
"routes": {
"type": "array",
"items": {
"type": "string"
},
"maxItems": 10,
"description": "routes to check in depth, as \"POST /v1/x\" (default: the first 10 paid routes in /openapi.json)"
},
"queries": {
"type": "array",
"items": {
"type": "string",
"maxLength": 100
},
"maxItems": 3,
"description": "Bazaar search queries to rank each route for (default: each route's tags)"
},
"purchase": {
"oneOf": [
{
"enum": [
false
],
"type": "boolean"
},
{
"type": "object",
"required": [
"method",
"path"
],
"properties": {
"body": {
"type": "object"
},
"path": {
"type": "string"
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string"
}
}
}
],
"description": "the route to buy once, {method, path, body}, default the cheapest route that answers 402; false to skip"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"origin",
"summary",
"fixes",
"purchase",
"routes",
"lint"
],
"properties": {
"lint": {
"type": "object",
"description": "the origin lint: discovery documents and every paid route's 402"
},
"fixes": {
"type": "array",
"description": "what to fix, most important first: priority, level (fail|warn), where, check and a message that says what to change"
},
"routes": {
"type": "array",
"description": "per route: the seller checkup's checks, Bazaar listing and search rank, and our 30-day uptime record"
},
"summary": {
"type": "object",
"description": "paid routes, routes checked in depth, counts of failures and warnings, and the purchase outcome"
},
"purchase": {
"type": "object",
"description": "the real purchase: outcome (paid|failed|skipped), network, price, status, time, transaction with explorer link, and the start of the answer"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-26 13:08Z
- Last indexed by Roundhouse
- 2026-10-26 20:00Z
- Last enriched (probe, favicon, geo)
- —
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- Not probed
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
No per-endpoint history for this service yet, so this is payments indexed to its PROVIDER's wallet over 30 days. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service x402 Seller Audit 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=x402%20Seller%20Audit' 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://audit.kagurazaka.dev/v1/seller-audit, 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.