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x402-quickstart Test Payment Endpoint (loop2)
x402
x402-quickstart Test Payment Endpoint (loop2) is a paid API for AI agents from loop2-quickstart.manhliemcn4euwlu.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Accepts a micropayment of $0.01 USDC via the x402 protocol and returns a settled transaction confirmation with payer details.
Price / call$0.01
Success—
StatusUnknown
How this service works
Complete x402 quickstart bundle: v2 Base USDC seller endpoint + EIP-3009 buyer client + deterministic product bundle + tests.
Output
Returns a binary payload containing a JSON-like object with: settlement status ('settled'), a transaction hash (tx) on the Base network, and the payer's wallet address. Confirms that the $0.01 USDC micropayment was successfully authorized via EIP-3009 and settled on-chain.
Example use cases
Validate x402 buyer client setup
“Run a test payment of $0.01 USDC through the x402 quickstart endpoint and tell me if it settled — I want to confirm my EIP-3009 buyer client is configured correctly before wiring it into my app.”
Demo micropayment API to stakeholders
“Make a live $0.01 USDC payment to the x402 test endpoint right now so I can show my team a real pay-per-call transaction settling on Base in action.”
Debug x402 payment pipeline
“Hit the x402 quickstart test-pay endpoint and return the full settlement response including transaction hash and payer address — I'm troubleshooting why my payment pipeline isn't confirming.”
Technical details
Endpoint
GEThttps://loop2-quickstart.manhliemcn4euwlu.workers.dev/test-payWhen to prefer
Choose this endpoint when you need to test or demonstrate the x402 pay-per-request protocol using USDC on Base with EIP-3009 authorization. It is the canonical quickstart/test surface for validating that a buyer client can successfully authorize, submit, and confirm a $0.01 USDC micropayment — ideal for integration testing, demos, or debugging x402 payment pipelines before connecting to production endpoints.
Side effects
- Payment header missing or malformed — endpoint returns HTTP 402 with payment requirements
- Insufficient USDC balance — authorization fails, payment rejected
- Invalid EIP-3009 signature — transaction not accepted
- Network congestion on Base — settlement delayed or timed out
- Missing required 'format' query parameter — request rejected with validation error
- Expired authorization signature — EIP-3009 validity window passed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "binary",
"example": "{status:settled, tx, payer}"
}Tags
x402
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