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l402.space x402 Ping
x402
l402.space x402 Ping is a paid API for AI agents from l402.space, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
A paid echo/ping endpoint that verifies x402 payment connectivity by echoing back a user-supplied string along with payment rail metadata.
Price / call$0.01
Success—
StatusUnknown
How this service works
Any wallet. Any paid API. Any rail. l402.space is a payment gateway that lets you pay for any 402-gated API with any agentic wallet — over L402, x402, or MPP (Lightning or Tempo). Browse live stats and grab a proxy URL for any endpoint.
Output
Returns a JSON object containing the echoed input string, a 'pong' boolean confirming success, the payment rail used (e.g. x402, L402, MPP), the network (e.g. Lightning, Tempo), the price in USD, the amount in satoshis, and a status message. Confirms end-to-end payment flow completed successfully.
Example use cases
Wallet integration smoke test
“Send a ping to the l402.space x402 endpoint with the echo string 'wallet-check' so I can confirm my new agentic wallet is set up correctly and can actually pay for 402-gated APIs.”
Payment rail diagnostics
“Ping the l402.space x402 gateway with echo text 'rail-diagnostic' — I want to see which payment rail and network it used so I can debug why my Lightning payments aren't going through.”
Cheapest possible 402 connectivity test
“Run a quick x402 ping through l402.space with the echo message 'integration-test' to verify our CI pipeline can make live paid API calls before we deploy to production.”
Technical details
Endpoint
GEThttps://l402.space/x402/pingWhen to prefer
Use this endpoint when you need the cheapest possible live test to confirm an agentic wallet can successfully negotiate and pay a 402-gated API call. Ideal for CI/CD smoke tests, wallet integration validation, or debugging which payment rail (L402, x402, MPP) is active. Prefer this over a real paid endpoint when you just need to verify payment plumbing without side effects beyond the $0.01 test charge.
Side effects
- Payment not authorized — wallet lacks funds or has not approved the $0.01 USDC charge
- Invalid or missing 'echo' parameter — returns 400-level error
- Payment rail mismatch — wallet does not support the requested protocol (L402/x402/MPP)
- Network unavailable — Lightning or Tempo node unreachable
- Stale payment token — 402 challenge expired before wallet responded
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| echorequired | string | Any string; echoed back verbatim in the pong response. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| echo | string | |
| pong | boolean | |
| rail | string | |
| message | string | |
| network | string | |
| priceUsd | number | |
| amountSats | integer |
Tags
x402
Reviews
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