x402.openwebninja.com
The web data & SERP API stack for AI engineers, app developers, and GTM teams. 40+ fast and reliable APIs for accurate, real-time public data from across the web.
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": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"scheme": "exact",
"network": "base",
"mimeType": "",
"resource": "https://x402.openwebninja.com/realtime-local-and-maps-data/yelp/business-details",
"description": "",
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"scheme": "exact",
"network": "polygon",
"mimeType": "",
"resource": "https://x402.openwebninja.com/realtime-local-and-maps-data/yelp/business-details",
"description": "",
"maxAmountRequired": "3000",
"maxTimeoutSeconds": 300
}
],
"x402Version": 1
}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 0.003 USDC on Base to 0x3e7c…11570. The signed payment is good for 5 minutes.
- Paid to
- 0x3e7c…11570
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 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
- 0x3e7c…11570
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
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
- 0x3e7c…11570
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"amount": "3000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"amount": "3000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
},
"output": {
"type": "json",
"example": {}
}
},
"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",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"business_id"
],
"properties": {
"business_id": {
"type": "string"
},
"yelp_domain": {
"enum": [
"yelp.com",
"yelp.com.au",
"yelp.co.nz",
"ms.yelp.my",
"yelp.cz",
"yelp.dk",
"yelp.de",
"yelp.at",
"de.yelp.ch",
"en.yelp.be",
"yelp.ca",
"en.yelp.com.hk",
"en.yelp.my",
"en.yelp.com.ph",
"yelp.ie",
"yelp.com.sg",
"en.yelp.ch",
"yelp.co.uk",
"yelp.com.ar",
"yelp.cl",
"yelp.es",
"yelp.com.mx",
"fil.yelp.com.ph",
"yelp.fr",
"fr.yelp.ca",
"fr.yelp.ch",
"fr.yelp.be",
"yelp.no",
"yelp.pl",
"yelp.pot",
"yelp.com.br",
"fi.yelp.fi",
"sv.yelp.fi",
"yelp.se",
"yelp.com.tr",
"yelp.co.jp",
"zh.yelp.com.hk",
"yelp.com.tw"
],
"type": "string",
"default": "yelp.com"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "array",
"items": {
"type": "object",
"properties": {
"id": {
"type": "string",
"description": "The unique identifier of the business"
},
"name": {
"type": "string",
"description": "The name of the business"
},
"alias": {
"type": "string",
"description": "The alias of the business"
},
"phone": {
"type": "string",
"description": "The phone number of the business"
},
"photo": {
"type": "string",
"description": "The URL of the business photo"
},
"rating": {
"type": "number",
"description": "The rating of the business"
},
"address": {
"type": "string",
"description": "The address of the business"
},
"country": {
"type": "string",
"description": "The country where the business is located"
},
"website": {
"type": "string",
"description": "The website URL of the business"
},
"menu_url": {
"type": "string",
"description": "The URL of the business menu"
},
"yelp_menu": {
"type": "string",
"description": "The URL to the Yelp menu of the business"
},
"owner_name": {
"type": "string",
"description": "The name of the business owner"
},
"price_range": {
"type": "string",
"description": "The price range of the business"
},
"review_count": {
"type": "integer",
"description": "The number of reviews for the business"
},
"owner_biography": {
"type": "string",
"description": "A short biography of the business owner"
},
"owner_photo_url": {
"type": "string",
"description": "The URL of the business owner's photo"
},
"business_page_link": {
"type": "string",
"description": "The link to the business page"
}
}
}
},
"status": {
"type": "string",
"description": "The status of the response"
},
"request_id": {
"type": "string",
"description": "The unique identifier for the request"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-07 19:18Z
- Last indexed by Roundhouse
- 2026-09-06 19:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 09:15Z
- x402 version
- 2
- Max timeout
- 300s
- Liveness probe
- HTTP 0
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. 14 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 x402.openwebninja.com 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.openwebninja.com' 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.openwebninja.com/realtime-local-and-maps-data/yelp/business-details, 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.