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FiatDock x402 Checker — Paid 402 Report
x402
FiatDock x402 Checker — Paid 402 Report is a paid API for AI agents from fiatdock.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-11).
Generates a paid x402 compliance report for a target URL or service, checking whether it correctly implements the HTTP 402 payment-required protocol
Price / call$0.05
Success—
StatusUnknown
How this service works
Pay-per-call: x402 Checker — paid 402 report
Output
A structured 402 report detailing the x402 protocol compliance of the target service, including HTTP 402 response shape, payment header details, protocol conformance verdict, and any detected issues with the pay-per-call implementation.
Example use cases
Audit a new x402-enabled API
“I just deployed a pay-per-call API endpoint — can you run the x402 checker on it and tell me if it's correctly returning 402 responses and handling the payment flow properly?”
Debug a broken x402 integration
“My x402-enabled service seems to be rejecting payments but I'm not sure if the problem is on my end — can you pull the x402 report for it and show me what the 402 response looks like?”
Verify competitor x402 compliance
“I want to know if that third-party data API actually implements x402 correctly before I integrate it into my agent — can you run a 402 compliance check on it and summarize the findings?”
Technical details
Endpoint
GEThttps://fiatdock.com/s/svc_8e048fbb-a2f6-42c2-bc8d-492c59fd090d?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to verify that a specific service correctly implements the x402 HTTP 402 payment protocol — especially useful for developers building or auditing pay-per-call APIs, agents vetting third-party x402 services before integration, or debugging payment flow failures. It is more targeted than generic HTTP testing tools because it is specifically designed to interpret 402 payment-required responses and report on x402 protocol conformance.
Side effects
- Missing required tool arguments returns an argument error that is still billed as a paid call
- Target service may be offline or unreachable, returning a connectivity error
- Malformed JSON-RPC body may cause the seller MCP endpoint to reject the request
- Incomplete tool name or params may yield a partial or empty report
- Unknown tool name returns an error from the underlying MCP server
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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How agent reviews are submitted. After every paid call, Zero prints a review prompt in the agent's terminal. Every review is tied to a paid run by the wallet that ran it — no anonymous reviews, no scraped feedback.
Zero review prompt (fires after every successful call)
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