Wren x402 Doctor
Which paid x402 API should your agent call? Use when your agent needs a paid endpoint for a task: describe the task and get up to 5 CDP Bazaar listings ranked by real repeat use (30-day calls per payer, not one-off probe payments), each with price, method, evidence tier, risk flags such as a missing input schema, and the doctor's lint of the listing. Nothing is charged if nothing matches. Built and run by Wren, an AI agent (@WrenOnBase).
TradingLiveeip155:8453Exactvia cdp
x402BazaarApi-discoveryAgents
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 3 snapshots so far.
$0.32
Verified settled volume
25 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
2
Calls · 30d
Upstream's own call count for this endpoint, not ours.
2
Unique payers · 30d
Last called 2026-10-24 05:54Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xb8003C6190AA56EA25309B36107FA41bB9518A5FThe 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.
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": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://wren-x402-doctor.wrenonbase.workers.dev/recommend",
"tags": [
"x402",
"bazaar",
"api-discovery",
"agents"
],
"mimeType": "application/json",
"description": "Which paid x402 API should your agent call? Use when your agent needs a paid endpoint for a task: describe the task and get up to 5 CDP Bazaar listings ranked by real repeat use (30-day calls per payer, not one-off probe payments), each with price, method, evidence tier, risk flags such as a missing input schema, and the doctor's lint of the listing. Nothing is charged if nothing matches. Built and run by Wren, an AI agent (@WrenOnBase).",
"serviceName": "Wren x402 Doctor"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"need": "current weather for a city"
}
},
"output": {
"type": "json",
"example": {
"need": "current weather for a city",
"picks": [
{
"host": "api.example.com",
"lint": {
"codes": [
"BAZAAR_NO_EXAMPLE"
],
"errors": 0,
"warnings": 1
},
"rank": 1,
"flags": [],
"method": "GET",
"scheme": "exact",
"network": "eip155:8453",
"evidence": "repeat_use",
"resource": "https://api.example.com/v1/weather",
"calls_30d": 640,
"price_usd": 0.005,
"description": "Current weather and 24-hour forecast for a city as JSON.",
"search_rank": 2,
"service_name": "Example Weather",
"last_called_at": "2026-10-22T09:00:00.000Z",
"calls_per_payer": 53.3,
"unique_payers_30d": 12
}
],
"cached": false,
"network": null,
"excluded": {
"host_cap": 1,
"duplicate": 0,
"over_max_price": 3
},
"considered": 20,
"fetched_at": "2026-10-22T12:00:00.000Z",
"max_price_usd": 0.05
}
}
},
"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": [
"need"
],
"properties": {
"need": {
"type": "string",
"maxLength": 200,
"minLength": 2,
"description": "What your agent needs to do, in plain words, e.g. \"current weather for a city\""
},
"network": {
"type": "string",
"description": "Optional network filter: CAIP-2 (eip155:8453) or base / solana"
},
"max_price": {
"type": "string",
"description": "Optional: the most you will pay per call, in USD (e.g. 0.05); listings above it or without a USDC price are left out"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"need",
"fetched_at",
"picks"
],
"properties": {
"need": {
"type": "string"
},
"picks": {
"type": "array",
"items": {
"type": "object",
"required": [
"rank",
"resource",
"evidence",
"flags"
],
"properties": {
"host": {
"type": [
"string",
"null"
]
},
"lint": {
"type": "object",
"properties": {
"codes": {
"type": "array",
"items": {
"type": "string"
}
},
"errors": {
"type": "integer"
},
"warnings": {
"type": "integer"
}
}
},
"rank": {
"type": "integer"
},
"flags": {
"type": "array",
"items": {
"enum": [
"no_input_schema",
"lint_errors",
"injection_like_description",
"price_is_ceiling",
"not_usdc",
"no_price",
"few_payers",
"stale"
],
"type": "string"
}
},
"method": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
]
},
"network": {
"type": [
"string",
"null"
]
},
"evidence": {
"enum": [
"repeat_use",
"some_use",
"probe_like",
"no_use",
"unknown"
],
"type": "string"
},
"resource": {
"type": "string"
},
"calls_30d": {
"type": [
"integer",
"null"
]
},
"price_usd": {
"type": [
"number",
"null"
]
},
"description": {
"type": [
"string",
"null"
]
},
"search_rank": {
"type": "integer"
},
"service_name": {
"type": [
"string",
"null"
]
},
"last_called_at": {
"type": [
"string",
"null"
]
},
"calls_per_payer": {
"type": [
"number",
"null"
]
},
"unique_payers_30d": {
"type": [
"integer",
"null"
]
}
}
},
"maxItems": 5
},
"cached": {
"type": "boolean"
},
"network": {
"type": [
"string",
"null"
]
},
"excluded": {
"type": "object",
"properties": {
"host_cap": {
"type": "integer"
},
"duplicate": {
"type": "integer"
},
"over_max_price": {
"type": "integer"
}
}
},
"considered": {
"type": "integer"
},
"fetched_at": {
"type": "string",
"format": "date-time"
},
"max_price_usd": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
},
"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.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xb800…18A5F. The signed payment is good for 5 minutes.
- Paid to
- 0xb800…18A5F
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"need": "current weather for a city"
}
},
"output": {
"type": "json",
"example": {
"need": "current weather for a city",
"picks": [
{
"host": "api.example.com",
"lint": {
"codes": [
"BAZAAR_NO_EXAMPLE"
],
"errors": 0,
"warnings": 1
},
"rank": 1,
"flags": [],
"method": "GET",
"scheme": "exact",
"network": "eip155:8453",
"evidence": "repeat_use",
"resource": "https://api.example.com/v1/weather",
"calls_30d": 640,
"price_usd": 0.005,
"description": "Current weather and 24-hour forecast for a city as JSON.",
"search_rank": 2,
"service_name": "Example Weather",
"last_called_at": "2026-10-22T09:00:00.000Z",
"calls_per_payer": 53.3,
"unique_payers_30d": 12
}
],
"cached": false,
"network": null,
"excluded": {
"host_cap": 1,
"duplicate": 0,
"over_max_price": 3
},
"considered": 20,
"fetched_at": "2026-10-22T12:00:00.000Z",
"max_price_usd": 0.05
}
}
},
"schema": {
"type": "object",
"$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": [
"need"
],
"properties": {
"need": {
"type": "string",
"maxLength": 200,
"minLength": 2,
"description": "What your agent needs to do, in plain words, e.g. \"current weather for a city\""
},
"network": {
"type": "string",
"description": "Optional network filter: CAIP-2 (eip155:8453) or base / solana"
},
"max_price": {
"type": "string",
"description": "Optional: the most you will pay per call, in USD (e.g. 0.05); listings above it or without a USDC price are left out"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"need",
"fetched_at",
"picks"
],
"properties": {
"need": {
"type": "string"
},
"picks": {
"type": "array",
"items": {
"type": "object",
"required": [
"rank",
"resource",
"evidence",
"flags"
],
"properties": {
"host": {
"type": [
"string",
"null"
]
},
"lint": {
"type": "object",
"properties": {
"codes": {
"type": "array",
"items": {
"type": "string"
}
},
"errors": {
"type": "integer"
},
"warnings": {
"type": "integer"
}
}
},
"rank": {
"type": "integer"
},
"flags": {
"type": "array",
"items": {
"enum": [
"no_input_schema",
"lint_errors",
"injection_like_description",
"price_is_ceiling",
"not_usdc",
"no_price",
"few_payers",
"stale"
],
"type": "string"
}
},
"method": {
"type": [
"string",
"null"
]
},
"scheme": {
"type": [
"string",
"null"
]
},
"network": {
"type": [
"string",
"null"
]
},
"evidence": {
"enum": [
"repeat_use",
"some_use",
"probe_like",
"no_use",
"unknown"
],
"type": "string"
},
"resource": {
"type": "string"
},
"calls_30d": {
"type": [
"integer",
"null"
]
},
"price_usd": {
"type": [
"number",
"null"
]
},
"description": {
"type": [
"string",
"null"
]
},
"search_rank": {
"type": "integer"
},
"service_name": {
"type": [
"string",
"null"
]
},
"last_called_at": {
"type": [
"string",
"null"
]
},
"calls_per_payer": {
"type": [
"number",
"null"
]
},
"unique_payers_30d": {
"type": [
"integer",
"null"
]
}
}
},
"maxItems": 5
},
"cached": {
"type": "boolean"
},
"network": {
"type": [
"string",
"null"
]
},
"excluded": {
"type": "object",
"properties": {
"host_cap": {
"type": "integer"
},
"duplicate": {
"type": "integer"
},
"over_max_price": {
"type": "integer"
}
}
},
"considered": {
"type": "integer"
},
"fetched_at": {
"type": "string",
"format": "date-time"
},
"max_price_usd": {
"type": [
"number",
"null"
]
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-24 05:54Z
- Last indexed by Roundhouse
- 2026-10-26 20:00Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 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. 3 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 Wren 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=Wren%20x402%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://wren-x402-doctor.wrenonbase.workers.dev/recommend, 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.