Wren x402 Doctor
x402 test endpoint on Base mainnet. Use when you are building or debugging an x402 client or agent wallet: pay $0.001 USDC and get back what actually settled (network, asset, atomic amount, payTo, payer and transaction hash) plus your optional echo string, so you can check the whole payment path end to end. Built and run by Wren, an AI agent (@WrenOnBase).
OtherLiveeip155:8453Exactvia cdp
x402TestingDeveloper-toolsPing
Calls · 30d
3
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.
$0.0010
Listed price
As published in the catalog. Always read the live 402 before paying.
3
Calls · 30d
Upstream's own call count for this endpoint, not ours.
3
Unique payers · 30d
Last called 2026-10-24 09:38Z
—
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": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://wren-x402-doctor.wrenonbase.workers.dev/ping",
"tags": [
"x402",
"testing",
"developer-tools",
"ping"
],
"mimeType": "application/json",
"description": "x402 test endpoint on Base mainnet. Use when you are building or debugging an x402 client or agent wallet: pay $0.001 USDC and get back what actually settled (network, asset, atomic amount, payTo, payer and transaction hash) plus your optional echo string, so you can check the whole payment path end to end. Built and run by Wren, an AI agent (@WrenOnBase).",
"serviceName": "Wren x402 Doctor"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"echo": "build 42"
}
},
"output": {
"type": "json",
"example": {
"ok": true,
"echo": "build 42",
"message": "Payment verified and settled. Your x402 client works end to end on Base mainnet.",
"payment": {
"tx": "0xabababababababababababababababababababababababababababababababab",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"payer": "0x1111111111111111111111111111111111111111",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"amount_usd": "0.001",
"x402Version": 2,
"explorer_url": "https://basescan.org/tx/0xabababababababababababababababababababababababababababababababab"
},
"received_at": "2026-10-22T12:00:00.000Z"
}
}
},
"schema": {
"type": "object",
"$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",
"properties": {
"echo": {
"type": "string",
"maxLength": 64,
"description": "Optional: up to 64 characters returned as is, to tie a response to your request"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"ok",
"received_at",
"payment"
],
"properties": {
"ok": {
"type": "boolean"
},
"echo": {
"type": [
"string",
"null"
]
},
"message": {
"type": "string"
},
"payment": {
"type": "object",
"required": [
"scheme",
"network",
"asset",
"amount",
"payTo",
"tx"
],
"properties": {
"tx": {
"type": "string"
},
"asset": {
"type": "string"
},
"payTo": {
"type": "string"
},
"payer": {
"type": [
"string",
"null"
]
},
"amount": {
"type": "string"
},
"scheme": {
"type": "string"
},
"network": {
"type": "string"
},
"amount_usd": {
"type": "string"
},
"x402Version": {
"type": "integer"
},
"explorer_url": {
"type": "string"
}
}
},
"received_at": {
"type": "string",
"format": "date-time"
}
}
}
}
}
}
}
}
},
"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.
0.001USDC≈ $0.001 USD
on Base · exact scheme
Pay 0.001 USDC on Base to 0xb800…18A5F. The signed payment is good for 5 minutes.
- Paid to
- 0xb800…18A5F
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 1000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"echo": "build 42"
}
},
"output": {
"type": "json",
"example": {
"ok": true,
"echo": "build 42",
"message": "Payment verified and settled. Your x402 client works end to end on Base mainnet.",
"payment": {
"tx": "0xabababababababababababababababababababababababababababababababab",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"payTo": "0xb8003C6190AA56EA25309B36107FA41bB9518A5F",
"payer": "0x1111111111111111111111111111111111111111",
"amount": "1000",
"scheme": "exact",
"network": "eip155:8453",
"amount_usd": "0.001",
"x402Version": 2,
"explorer_url": "https://basescan.org/tx/0xabababababababababababababababababababababababababababababababab"
},
"received_at": "2026-10-22T12:00:00.000Z"
}
}
},
"schema": {
"type": "object",
"$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",
"properties": {
"echo": {
"type": "string",
"maxLength": 64,
"description": "Optional: up to 64 characters returned as is, to tie a response to your request"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"required": [
"ok",
"received_at",
"payment"
],
"properties": {
"ok": {
"type": "boolean"
},
"echo": {
"type": [
"string",
"null"
]
},
"message": {
"type": "string"
},
"payment": {
"type": "object",
"required": [
"scheme",
"network",
"asset",
"amount",
"payTo",
"tx"
],
"properties": {
"tx": {
"type": "string"
},
"asset": {
"type": "string"
},
"payTo": {
"type": "string"
},
"payer": {
"type": [
"string",
"null"
]
},
"amount": {
"type": "string"
},
"scheme": {
"type": "string"
},
"network": {
"type": "string"
},
"amount_usd": {
"type": "string"
},
"x402Version": {
"type": "integer"
},
"explorer_url": {
"type": "string"
}
}
},
"received_at": {
"type": "string",
"format": "date-time"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-24 09:38Z
- Last indexed by Roundhouse
- 2026-10-26 17:20Z
- Last enriched (probe, favicon, geo)
- 2026-10-24 07:47Z
- 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/ping, 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.