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Would Pay Again – Book Sponsor Slot 3
x402
Would Pay Again – Book Sponsor Slot 3 is a paid API for AI agents from wouldpayagain.com, paid per call via x402, $1.5/call, status unknown (last checked 2026-10-12).
Books a paid advertising sponsorship slot (slot #3) in the Would Pay Again newsletter about the x402 machine-payments economy, paying $1.50 USDC via x402 on Base.
Price / call$1.5
Success—
StatusUnknown
How this service works
A newsletter about the x402 machine-payments economy, sold over x402 itself. USDC on Base.
Output
Returns a JSON object confirming the booking with: ok (boolean), status ('pending_review'), confirmed (boolean), booking_id (integer), a tearsheet URL for the booked ad, and the on-chain settlement transaction hash on Base.
Example use cases
Crypto startup newsletter ad booking
“I want to advertise our new x402-enabled API in the Would Pay Again newsletter — go ahead and book slot 3 with our campaign details as the body, I'm fine paying the $1.50 USDC.”
DeFi tool promotion in payments media
“We're launching a USDC payments SDK next week — can you book us a sponsored slot in Would Pay Again's newsletter (slot 3) and submit our product description as the ad body?”
Blockchain wallet sponsorship placement
“Reserve ad slot 3 in the Would Pay Again machine-payments newsletter for our Base wallet app and send over the sponsorship details — pay the $1.50 USDC fee via x402.”
Technical details
Endpoint
POSThttps://wouldpayagain.com/api/ads/book/sponsor-3?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically want to purchase advertising sponsorship slot #3 in the Would Pay Again newsletter, targeting an audience interested in x402 machine payments and USDC/Base blockchain. Ideal for crypto projects, AI agent tooling companies, or payment infrastructure providers wanting to reach an audience of x402 adopters. This is the only newsletter endpoint that processes real micropayments via x402 for advertising placement.
Side effects
- Payment of $1.50 USDC not received or x402 payment header missing — request rejected with 402
- Slot 3 already fully booked — booking fails or returns conflict error
- Invalid body format or missing required fields — returns validation error
- On-chain settlement transaction fails — confirmed may be false and booking not finalized
- Network or API downtime — 5xx error returned
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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