x402 Service Finder
Find the best x402 API for a task. Describe what you need (for example "remove the background from a photo") and get the matching sellers from the CDP Bazaar ranked by relevance, how many distinct buyers paid them in 30 days, their uptime measured by our monitor every 6 hours, and price. Each result has its price, payers, uptime, median latency and how to call it (method and example input).
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",
"request": {
"task": "what you need done, in plain words"
},
"networks": [
"eip155:8453"
],
"how_to_pay": "The payment options are base64 JSON in the PAYMENT-REQUIRED response header. Pay $0.002 in USDC with an x402 client (for example @x402/fetch)."
}Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
Pay 0.002 USDC on Base to 0xe6f7…3c3f8. The signed payment is good for 5 minutes.
- Paid to
- 0xe6f7…3c3f8
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 2000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xe6f7508ab572a4dc9c7486ea017b100d83f3c3f8",
"amount": "2000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"task": "remove the background from a photo",
"limit": 5,
"max_price_usd": 0.05
}
},
"output": {
"type": "json",
"example": {
"task": "remove the background from a photo",
"results": [
{
"score": 0.83,
"resource": "https://seller.example/api/remove-background",
"calls_30d": 12,
"median_ms": 210,
"price_usd": 0.001,
"payers_30d": 7,
"uptime_30d": 1,
"description": "Remove the background from an image URL and return a transparent PNG URL.",
"how_to_call": {
"method": "POST",
"example": {
"imageUrl": "https://example.com/cat.png"
}
},
"score_parts": {
"price": 1,
"payers": 1,
"uptime": 1,
"relevance": 1
},
"last_called_at": "2026-10-20T08:00:00Z"
}
],
"scoring": "score = 0.3 × relevance + 0.3 × payers + 0.25 × uptime + 0.15 × price ...",
"excluded": {
"above max_price_usd": 3
},
"considered": 18
}
}
},
"schema": {
"type": "object",
"$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": [
"task"
],
"properties": {
"task": {
"type": "string",
"maxLength": 300,
"description": "what you need done, in plain words"
},
"limit": {
"type": "integer",
"description": "how many results to return (1-10, default 5)"
},
"min_payers": {
"type": "integer",
"description": "leave out sellers with fewer distinct payers in 30 days"
},
"max_price_usd": {
"type": "number",
"description": "leave out sellers that charge more per call"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"task",
"results"
],
"properties": {
"task": {
"type": "string"
},
"results": {
"type": "array",
"description": "best first: resource, score, description, price_usd, payers_30d, calls_30d, uptime_30d (null when not measured), median_ms, how_to_call, score_parts"
},
"scoring": {
"type": "string",
"description": "how the score is computed"
},
"excluded": {
"type": "object",
"description": "listings left out, by reason"
},
"considered": {
"type": "integer",
"description": "how many Bazaar listings matched the task"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-24 18:27Z
- Last indexed by Roundhouse
- 2026-10-26 17:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 23:16Z
- 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
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 Service Finder 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%20Service%20Finder' 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://tvy64m9w0dfvxmkq.68r.lambda-web.us-east-1.on.aws/v1/find, 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.