x402 Doctor
Paste an x402 endpoint URL and see exactly which part of its payment flow is broken. Read-only: no wallet, no payment.
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.
Live 402 challenge
Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6B0F4651eD42893ab58139938175E4a69f175F25",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "Hc3sdEAsCGQcpgfivywog9uwtk8gUBUZgsxdME1EJy88"
},
"payTo": "ATWJ82T8nRdQwZnaysB68N5EpaSvLRsQP4h6eWmaJBH9",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
],
"x402Version": 2
}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 0.001 USDC on Base to 0x6B0F…75F25. The signed payment is good for 5 minutes.
- Paid to
- 0x6B0F…75F25
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 1000 smallest units
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- ATWJ82…aJBH9
- Token contract
- EPjFWd…TDt1v
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x6B0F4651eD42893ab58139938175E4a69f175F25",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"payTo": "ATWJ82T8nRdQwZnaysB68N5EpaSvLRsQP4h6eWmaJBH9",
"amount": "1000",
"scheme": "exact",
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"url": "https://ichimoku-signal.onrender.com/signal/BTC-USDT",
"max_usd": "0.05"
}
},
"output": {
"type": "json",
"example": {
"url": "https://ichimoku-signal.onrender.com/signal/BTC-USDT",
"cached": false,
"method": "GET",
"options": [
{
"usd": 0.02,
"index": 0,
"amount": "20000",
"pay_to": "0x6B0F4651eD42893ab58139938175E4a69f175F25",
"network": "eip155:8453",
"payable": true,
"problems": [],
"asset_symbol": "USDC",
"network_name": "Base"
}
],
"reasons": [],
"signals": {
"https": true,
"advertised_price_usd": 0.02,
"listed_in_cdp_bazaar": false
},
"summary": "OK to pay: $0.02 on Base.",
"verdict": "go",
"checked_at": "2026-09-23T17:00:00.000Z",
"safe_to_pay": true,
"recommended_option": 0
}
}
},
"schema": {
"type": "object",
"$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": "The x402 endpoint you are about to pay."
},
"method": {
"enum": [
"GET",
"POST"
],
"type": "string",
"description": "HTTP method you will call it with. Default: try GET, then POST."
},
"max_usd": {
"type": "string",
"description": "Your budget per call in USD; above it the verdict is no_go."
},
"network": {
"type": "string",
"description": "CAIP-2 network you want to pay on, e.g. eip155:8453 or solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp."
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"url",
"verdict",
"safe_to_pay",
"summary",
"options",
"reasons"
],
"properties": {
"url": {
"type": "string"
},
"cached": {
"type": "boolean"
},
"method": {
"type": [
"string",
"null"
]
},
"options": {
"type": "array",
"items": {
"type": "object",
"required": [
"index",
"payable",
"problems"
],
"properties": {
"usd": {
"type": [
"number",
"null"
]
},
"index": {
"type": "integer"
},
"amount": {
"type": [
"string",
"null"
]
},
"pay_to": {
"type": [
"string",
"null"
]
},
"network": {
"type": [
"string",
"null"
]
},
"payable": {
"type": "boolean"
},
"problems": {
"type": "array",
"items": {
"type": "string"
}
},
"asset_symbol": {
"type": [
"string",
"null"
]
},
"network_name": {
"type": [
"string",
"null"
]
}
}
}
},
"reasons": {
"type": "array",
"items": {
"type": "object",
"required": [
"level",
"code",
"message"
],
"properties": {
"code": {
"type": "string"
},
"level": {
"enum": [
"no_go",
"caution",
"info"
],
"type": "string"
},
"message": {
"type": "string"
}
}
}
},
"signals": {
"type": "object"
},
"summary": {
"type": "string"
},
"verdict": {
"enum": [
"go",
"caution",
"no_go"
],
"type": "string"
},
"checked_at": {
"type": "string"
},
"safe_to_pay": {
"type": "boolean"
},
"recommended_option": {
"type": [
"integer",
"null"
]
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-09-23 17:44Z
- Last indexed by Roundhouse
- 2026-09-25 00:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-23 18:45Z
- 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
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 Doctor 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%20Doctor' 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://x402-doctor.onrender.com/api/v1/preflight, 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. Mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402, or use an organization key from https://roundhouseai.io/dashboard/team. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.