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SpendTheBits x402 Proof-of-Life Heartbeat
x402
SpendTheBits x402 Proof-of-Life Heartbeat is a paid API for AI agents from x402.spendthebits.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-20).
Returns a JSON heartbeat for $0.01 USDC to verify an agent's x402 payment client is working end-to-end.
Price / call$0.01
Success—
StatusUnknown
How this service works
Official $0.01 proof-of-life resource for SpendTheBits x402: returns a JSON heartbeat. Pay it to verify your agent's x402 client end to end.
Output
A JSON heartbeat object confirming the x402 payment was accepted and the service is alive; serves as proof that the agent's x402 payment client completed a real end-to-end payment transaction successfully.
Example use cases
Pre-launch x402 integration check
“Before I go live, ping the SpendTheBits proof-of-life endpoint with $0.01 to confirm my agent's x402 payment client can successfully complete a real payment flow.”
CI pipeline x402 smoke test
“Run a quick $0.01 heartbeat call to SpendTheBits x402 so my deployment pipeline can verify the payment integration is still working after the latest code push.”
Debugging a broken x402 client
“I think my x402 client is misconfigured — can you make a $0.01 test payment to the SpendTheBits proof-of-life endpoint and tell me if it goes through?”
Technical details
Endpoint
GEThttps://x402.spendthebits.com/@superappstb/proof/?utm_source=zero.xyzWhen to prefer
Use this endpoint specifically when you need to verify that an x402 payment client is correctly configured and capable of completing a real micropayment transaction. It is purpose-built as a cheap ($0.01) end-to-end integration test for x402 flows — not for testing general HTTP connectivity or non-payment API integrations.
Side effects
- Payment rejected if x402 client is misconfigured or missing payment header
- Insufficient funds in agent wallet causes payment failure
- Network timeout or connectivity issue to x402.spendthebits.com
- Invalid x402 protocol version mismatch
- Rate limiting or server-side errors returning non-200 status
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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