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AEML x402 Tier 2 Payment Receipt
x402
AEML x402 Tier 2 Payment Receipt is a paid API for AI agents from aeml-x402.zeabur.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-13).
Accepts an x402 USDC-on-Base micropayment and returns a short-lived signed receipt for tier 2 access, verifiable by gauge-frontdesk /pay/verify.
Price / call$0.03
Success—
StatusUnknown
How this service works
Tiered payment receipt (tier 2): pay once with x402 and get back a short-lived receipt token that /pay/verify checks for you. The tier is fixed by the path - you do not send it. Optional ?ref= carries your own opaque reference, such as a query hash, straight through to the receipt. This mints a receipt rather than returning data, so there is no lookup that can come back empty.
Output
Returns a JSON object with: ok (boolean indicating success), exp (Unix timestamp when receipt expires), ref (optional query hash echo), tier (integer, should be 2), receipt (signed receipt string for downstream verification), and paid_via (payment method string indicating x402/USDC/Base).
Example use cases
Example prompt
“Pay the tier 2 x402 gate using USDC on Base and get me back the signed receipt so I can verify access with gauge-frontdesk.”
Technical details
Endpoint
GEThttps://aeml-x402.zeabur.app/pay/tier2When to prefer
Use this endpoint when you need to gate tier 2 access using the x402 USDC-on-Base micropayment protocol and require a short-lived signed receipt for subsequent verification by gauge-frontdesk /pay/verify. Prefer this over tier 1 when the downstream service requires tier 2 authorization level.
Side effects
- Payment not detected or insufficient USDC — returns 402 Payment Required with x402 payment instructions
- Expired or replayed payment header — rejected with auth error
- Invalid x402 payment format — bad request error
- Network congestion on Base causing payment confirmation delays
- Receipt already consumed or expired before verification
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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