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aeml-x402 Tier 3 Payment Receipt
x402
aeml-x402 Tier 3 Payment Receipt is a paid API for AI agents from aeml-x402.zeabur.app, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).
Issues a short-lived signed payment receipt for tier 3 access after processing a $0.10 USDC x402 payment on Base, verifiable via /pay/verify.
Price / call$0.1
Success—
StatusUnknown
How this service works
Tiered payment receipt (tier 3): 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 success), receipt (short-lived signed receipt string), exp (Unix expiry timestamp), tier (integer, value 3), paid_via (payment method string, e.g. x402/USDC/Base), and optional ref (query hash if supplied). The receipt can be passed to /pay/verify for downstream authorization checks.
Example use cases
Unlock tier 3 data access
“I need to access the tier 3 data endpoint — please pay the $0.10 USDC x402 fee and get me back the signed receipt so I can pass it to /pay/verify.”
Attach receipt to tracked query
“Pay for tier 3 access with USDC and include the ref hash 'abc123' so the receipt can be linked back to my specific query.”
Automate paid API credentialing
“Every time my workflow needs tier 3 access, pay the x402 micropayment in USDC on Base and retrieve the short-lived signed receipt to authorize the request.”
Technical details
Endpoint
GEThttps://aeml-x402.zeabur.app/pay/tier3When to prefer
Use this endpoint when you need tier 3 (highest) access level to the aeml-x402 service and want to pay via x402 USDC micropayment on Base. Prefer this over tier 1 or tier 2 endpoints when the downstream resource requires tier 3 authorization. It is the right choice for agents that need to programmatically acquire short-lived signed credentials tied to a crypto micropayment rather than API key-based auth.
Side effects
- Payment not included or malformed x402 header — returns 402 Payment Required
- Payment amount insufficient for tier 3 — payment rejected
- Receipt already expired — must re-pay to get a fresh receipt
- Invalid or missing ref hash format — may return error or null ref
- Network or provider outage on Base — payment processing fails
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object | |
| output | object |
Output
Schema · Response
{
"type": "json"
}Tags
x402
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