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payable.nsgoods.org x402 Payability Checker
x402
payable.nsgoods.org x402 Payability Checker is a paid API for AI agents from payable.nsgoods.org, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Checks whether a given URL is a valid, reachable x402 payable endpoint by verifying HTTP 402 response, well-formed payment headers, and Solana destination ATA existence
Price / call$0.005
Success—
StatusUnknown
How this service works
x402 payability check: reachable + well-formed 402 + (Solana) destination-ATA existence
Output
Returns a structured JSON attestation including: overall payability verdict (pass/fail), whether the endpoint is reachable, whether it returns an HTTP 402, whether it accepts well-formed payment requests, a list of payable networks (e.g. Solana), payment options with destination addresses and details, a schema version, the checked timestamp, and a cryptographic signature from the checker service attesting to the result.
Example use cases
Pre-payment endpoint validation
“I'm about to send a micropayment to https://api.someservice.com/premium-data — can you first verify it's a legitimate x402 endpoint that's reachable, returns a proper 402, and has a working Solana payment destination?”
x402 marketplace listing audit
“I have a list of APIs claiming to support x402 payments; can you check whether https://store.example.org/api/feed is genuinely payable — does it return a well-formed 402 and have a valid on-chain ATA destination?”
Debugging x402 server configuration
“My x402 endpoint at https://myapp.dev/gated isn't accepting payments correctly — can you probe it and tell me if it's reachable, whether it returns a proper 402, and whether the Solana associated token account destination actually exists?”
Technical details
Endpoint
GEThttps://payable.nsgoods.org/payableWhen to prefer
Use this endpoint when you need to verify that a URL is correctly configured as an x402 payable endpoint before committing a payment, listing it in a marketplace, or integrating it into an agent workflow. It is specifically valuable for Solana-based x402 payments because it also checks on-chain ATA existence, not just the HTTP layer. Prefer this over generic HTTP probing tools when you need a signed, structured attestation of x402 compliance rather than a raw HTTP response.
Side effects
- Endpoint URL is unreachable or times out — verdict returned as non-payable with reachable=false
- Endpoint returns 402 but with malformed payment headers — accepts_wellformed=false
- Solana destination ATA does not exist on-chain — payable_networks excludes Solana
- Invalid or non-HTTP URL provided as resource parameter — input validation error
- Target endpoint returns unexpected status code (200, 404, 500) instead of 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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