x402.openwebninja.com
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DataLiveeip155:8453Exactvia cdp
Calls · 30d
1→ 0%
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 14 snapshots so far.
$8.95
Verified settled volume
2,750 settlements proven x402 by their on-chain EIP-3009 marker.
$0.0030
Listed price
As published in the catalog. Always read the live 402 before paying.
1
Calls · 30d
Upstream's own call count for this endpoint, not ours.
1
Unique payers · 30d
Last called 2026-08-07 19:22Z
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0x3e7c9cA818f713F19e126E3B7B37B47dC1411570The 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": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"scheme": "exact",
"network": "base",
"mimeType": "",
"resource": "https://x402.openwebninja.com/realtime-ecommerce-data/walmart/products-by-category",
"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-ecommerce-data/walmart/products-by-category",
"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.
0.003USDC≈ $0.003 USD
on Base · exact scheme
Pay 0.003 USDC on Base to 0x3e7c…11570. The signed payment is good for 5 minutes.
- Paid to
- 0x3e7c…11570
- USD Coin contract
- 0x8335…02913
- Payment window
- 5 minutes
- As published
- 3000 smallest units
3000units
on Polygon · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x3e7c…11570
- Token contract
- 0x3c49…c3359
- Payment window
- 5 minutes
3000units
on Arbitrum · exact scheme
That figure is in the token’s smallest units. Roundhouse does not hold this contract’s decimals, so it is shown as published rather than converted.
- Paid to
- 0x3e7c…11570
- Token contract
- 0xaf88…e5831
- Payment window
- 5 minutes
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"amount": "3000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
},
{
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"amount": "3000",
"scheme": "exact",
"network": "eip155:137",
"maxTimeoutSeconds": 300
},
{
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x3e7c9cA818f713F19e126E3B7B37B47dC1411570",
"amount": "3000",
"scheme": "exact",
"network": "eip155:42161",
"maxTimeoutSeconds": 300
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET"
},
"output": {
"type": "json",
"example": {}
}
},
"schema": {
"type": "object",
"$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": [
"category_id"
],
"properties": {
"zip": {
"type": "string"
},
"page": {
"type": "number",
"default": 1,
"minimum": 1
},
"facet": {
"type": "string"
},
"state": {
"type": "string"
},
"domain": {
"enum": [
"us",
"ca"
],
"type": "string",
"default": "us"
},
"sort_by": {
"enum": [
"best_match",
"price_low",
"price_high",
"best_seller",
"top_rated"
],
"type": "string",
"default": "best_match"
},
"store_id": {
"type": "string"
},
"max_price": {
"type": "number"
},
"min_price": {
"type": "number"
},
"category_id": {
"type": "string"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object",
"properties": {
"data": {
"type": "object",
"properties": {
"products": {
"type": "array",
"items": {
"type": "object",
"properties": {
"url": {
"type": "string"
},
"brand": {
"type": "string"
},
"image": {
"type": "string"
},
"price": {
"type": "number"
},
"title": {
"type": "string"
},
"pickup": {
"type": "boolean"
},
"rating": {
"type": "number"
},
"seller": {
"type": "string"
},
"currency": {
"type": "string"
},
"position": {
"type": "integer"
},
"preorder": {
"type": "boolean"
},
"shipping": {
"type": "boolean"
},
"max_price": {
"type": "string"
},
"min_price": {
"type": "string"
},
"seller_id": {
"type": "string"
},
"sponsored": {
"type": "boolean"
},
"thumbnail": {
"type": "string"
},
"list_price": {
"type": "number"
},
"product_id": {
"type": "string"
},
"us_item_id": {
"type": "string"
},
"badge_flags": {
"type": "array",
"items": {
"type": "object",
"properties": {
"key": {
"type": "string"
},
"text": {
"type": "string"
}
}
}
},
"best_seller": {
"type": "boolean"
},
"description": {
"type": "string"
},
"availability": {
"type": "string"
},
"out_of_stock": {
"type": "boolean"
},
"review_count": {
"type": "integer"
},
"free_shipping": {
"type": "boolean"
},
"price_display": {
"type": "string"
},
"primary_offer": {
"type": "object",
"properties": {
"offer_id": {
"type": "string"
},
"min_price": {
"type": "string"
},
"offer_price": {
"type": "number"
}
}
},
"shipping_days": {
"type": "string"
},
"savings_amount": {
"type": "number"
},
"currency_symbol": {
"type": "string"
},
"two_day_shipping": {
"type": "boolean"
},
"delivery_from_store": {
"type": "boolean"
},
"price_per_unit_type": {
"type": "string"
},
"price_per_unit_amount": {
"type": "string"
},
"multiple_options_available": {
"type": "boolean"
},
"free_shipping_with_walmart_plus": {
"type": "boolean"
}
}
}
},
"total_pages": {
"type": "integer"
},
"total_results": {
"type": "string"
}
}
},
"status": {
"type": "string"
},
"parameters": {
"type": "object",
"properties": {
"page": {
"type": "integer"
},
"domain": {
"type": "string"
},
"sort_by": {
"type": "string"
},
"category_id": {
"type": "string"
}
}
},
"request_id": {
"type": "string"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-08-07 19:22Z
- Last indexed by Roundhouse
- 2026-09-06 19:10Z
- Last enriched (probe, favicon, geo)
- 2026-09-21 08:15Z
- 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. 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-ecommerce-data/walmart/products-by-category, 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.