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X402 Doctor – Endpoint Diagnostic
x402
X402 Doctor – Endpoint Diagnostic is a paid API for AI agents from doctor.promoclube.online, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Runs a full x402 protocol diagnostic on a target HTTP endpoint and returns structured JSON describing its payment requirements and compatibility.
Price / call$0.01
Success—
StatusUnknown
How this service works
Full paid x402 diagnostic JSON for a target endpoint.
Output
Returns a structured JSON object containing the full x402 diagnostic for the target endpoint, including payment amount, accepted currency (e.g. USDC), payment facilitator, network, supported schemes, and protocol compliance status.
Example use cases
Pre-flight check before paying
“I'm about to call https://data.someservice.xyz/report but I don't want to get hit with an unexpected payment. Can you run an x402 diagnostic on it first and tell me what it costs and how payment works?”
Auditing a fleet of paid APIs
“I'm building a list of x402-compatible APIs — can you diagnose https://inference.coolmodel.ai/v1/complete and give me the full breakdown of its payment requirements in JSON?”
Debugging a 402 payment failure
“My agent keeps failing when it tries to pay https://payments.partnerapi.io/lookup — can you run a diagnostic on that URL to see if the x402 setup looks correct and what exactly it's expecting?”
Technical details
Endpoint
POSThttps://doctor.promoclube.online/diagnoseWhen to prefer
Use this endpoint when an AI agent needs to inspect an unknown or untrusted HTTP endpoint for x402 payment compatibility before committing funds. Ideal as a pre-flight step in agentic payment workflows to avoid failed or wasted USDC transactions. Prefer this over blind calling when the payment amount, facilitator, or currency of a target endpoint is unknown.
Side effects
- Target URL is unreachable or times out — diagnostic cannot be completed
- Target URL does not return a 402 response — not an x402 endpoint
- Malformed or non-URI input returns a validation error
- Target endpoint has misconfigured x402 headers — partial or ambiguous diagnostic returned
- Rate limiting or network errors from the target endpoint may affect results
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| url | string | Public HTTP(S) endpoint to inspect before spending on it. |
Tags
x402
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