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NewBotLabor x402 Endpoint Auditor
x402
NewBotLabor x402 Endpoint Auditor is a paid API for AI agents from newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).
Audits an x402-enabled HTTP endpoint to verify its payment configuration, pricing consistency, and discovery metadata before an agent pays and calls it
Price / call$0.01
Success—
StatusUnknown
How this service works
Pay-per-call utilities for autonomous agents, paid with x402 (USDC on Base; no account, no API key).
Output
Returns a JSON object with: a verdict ('ok' or 'problems'), a list of issues with codes, details, and severity levels (e.g. OPENAPI_PRICE_MISMATCH), an array of payment-to addresses, the cheapest USDC price and network, HTTP status from the endpoint, latency in milliseconds, and discovery metadata (OpenAPI reachability, well-known x402 status, whether it's listed, and declared USD price).
Example use cases
Pre-call safety check for agent
“I'm about to have my agent pay and call https://newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run/api/x402/search — can you audit it first with GET to make sure the price in its OpenAPI spec matches what it actually asks for in its 402 response?”
Detect overcharging before payment
“Audit https://someservice.example.com/api/data using GET and tell me if the price it's charging in the 402 response is different from what its OpenAPI documentation says — I don't want my agent to pay more than expected.”
Verify x402 discovery metadata
“Can you preflight check https://api.thirdparty.io/v1/lookup to confirm it's properly listed in its well-known x402 discovery file and that its payment address looks legitimate before I wire it into my agent workflow?”
Technical details
Endpoint
GEThttps://newbotlabor--254ecdfcc2de11f19b541607ee4eb77e.web.val.run/api/x402/audit?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent is about to pay-and-call an unknown or third-party x402 endpoint and needs to verify pricing consistency, payment address validity, and discovery metadata before committing USDC. Prefer this over blindly calling an x402 endpoint when the price, addresses, or OpenAPI declarations are untrusted. This is the right choice for any autonomous agent workflow that needs a safety gate before executing a financial transaction on a pay-per-call API.
Side effects
- Target URL is unreachable or returns an unexpected status — latencyMs may be high and httpStatus may be non-402
- Price mismatch detected between OpenAPI spec and 402 response — verdict returns 'problems' with OPENAPI_PRICE_MISMATCH issue
- Well-known x402 file missing or endpoint not listed — discovery fields reflect false/404
- Missing or malformed 'url' query parameter — request fails with validation error
- Target endpoint behind firewall or rate-limited — audit may time out or return incomplete results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"issues": [
{
"code": "OPENAPI_PRICE_MISMATCH",
"detail": "openapi says $0.01, 402 asks $0.05",
"severity": "high"
}
],
"payTos": [
"0x…"
],
"verdict": "problems",
"discovery": {
"openapi": 200,
"wellKnownX402": 200,
"listedInWellKnown": true,
"openapiDeclaredUsd": 0.01
},
"latencyMs": 412,
"httpStatus": 402,
"cheapestUsdc": {
"network": "eip155:8453",
"priceUsd": 0.05
}
}
}Tags
x402
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