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Would Pay Again – Book Classified Ad (Slot 2)
x402
Would Pay Again – Book Classified Ad (Slot 2) is a paid API for AI agents from wouldpayagain.com, paid per call via x402, $0.4/call, status unknown (last checked 2026-10-12).
Books a classified ad placement in the 'Would Pay Again' newsletter (slot 2) about the x402 machine-payments economy, paying $0.40 USDC over x402 on Base.
Price / call$0.4
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 with a booking ID, a pending_review status, a confirmed boolean, a tearsheet URL (e.g. https://wouldpayagain.com/api/ads/booking/6), and the on-chain settlement transaction hash from the USDC payment on Base.
Example use cases
Promote x402 dev tool to newsletter readers
“Place a classified ad in Would Pay Again's next issue advertising my new x402 payment SDK — the ad copy should read: 'StreamPay SDK: add machine payments to any Node app in under 10 minutes. streampayhq.com'”
Announce agentic wallet product launch
“Book classified slot 2 in the Would Pay Again newsletter to announce our agentic wallet launch — ad text: 'VaultAgent: the first self-custodial wallet built for AI agents. Open beta now at vaultagent.xyz'”
Drive sign-ups for a micropayments course
“I want to advertise my new course on x402 micropayments in the Would Pay Again newsletter — ad copy: 'Learn to build with x402 in a weekend. Enroll at x402school.com — first 100 students get 50% off.'”
Technical details
Endpoint
POSThttps://wouldpayagain.com/api/ads/book/classified-2?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you want to reach the audience of the Would Pay Again newsletter — people specifically interested in the x402 protocol and machine/AI-agent payments economy — and you want to pay for the ad atomically with USDC on Base via x402 without any fiat billing setup. It's ideal for promoting crypto-native tools, x402-compatible services, or agentic payment products to a self-selected technical and entrepreneurial audience.
Side effects
- Payment not included or insufficient USDC amount — x402 payment header missing or underfunded
- Invalid body structure — missing required fields (type, method, bodyType, body) returns validation error
- Ad body content rejected during editorial review — booking created but status remains pending_review
- Network or settlement failure on Base — transaction hash not returned, booking may not be confirmed
- Slot already booked — classified-2 slot may be unavailable for the requested period
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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