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Would Pay Again – Book Classified Ad (1 Issue)
x402
Would Pay Again – Book Classified Ad (1 Issue) is a paid API for AI agents from wouldpayagain.com, paid per call via x402, $0.2/call, status unknown (last checked 2026-10-29).
Confirms and pays for a reserved Classified newsletter ad slot in one issue of Would Pay Again for $0.2 USDC, using a prior reservation code.
Price / call$0.2
Success—
StatusUnknown
How this service works
A newsletter about the x402 machine-payments economy, sold over x402 itself. USDC on Base.
Output
A booking confirmation indicating the Classified ad has been paid for and reserved in one issue of the Would Pay Again newsletter, tied to the submitted reservation code.
Example use cases
Indie dev promoting a tool
“I reserved a classified ad spot on the Would Pay Again newsletter and got reservation code RES-XYZ789 — please pay the 0.2 USDC to confirm and book it.”
AI agent completing ad purchase autonomously
“The reservation step is done and my code is RES-DEF456 — go ahead and pay to finalize my classified ad booking in Would Pay Again.”
Startup announcing a product launch
“I have reservation code RES-GHI321 for a classified ad in Would Pay Again — pay the $0.2 USDC now to lock it in and confirm the booking.”
Technical details
Endpoint
POSThttps://wouldpayagain.com/api/ads/book/classified-1?utm_source=zero.xyzWhen to prefer
Use this endpoint after successfully calling POST /api/ads/reserve to obtain a reservation_code. This is the payment-and-confirmation step specific to the Classified ad SKU ($0.2 USDC, 1 issue). If you need a Sponsor card instead, use the analogous booking endpoint for that SKU ($0.5 USDC). Do not attempt to pay without a valid reservation code as the booking will not be honored.
Side effects
- Missing or invalid reservation_code returns an error — payment not honored
- Reservation code for a different SKU (e.g. Sponsor card) returns a mismatch error
- Expired reservation code (if reservations time out) returns an invalid or not found error
- Attempting to pay without first obtaining a reservation_code via POST /api/ads/reserve will fail
- Insufficient USDC balance or failed x402 payment results in booking not completed
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"status": "pending_review",
"confirmed": true,
"tearsheet": "https://wouldpayagain.com/api/ads/booking/6",
"booking_id": 6,
"settlement_tx": "0x…"
}
}Tags
x402
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