# Would Pay Again – Book Classified Ad (1 Issue)

> 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 2026-09-15).

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.

## Facts

- Endpoint: POST https://wouldpayagain.com/api/ads/book/classified-1
- Price: $0.2/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/would-pay-again-book-classified-ad-1-issue-eca7b783
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_teXey17fHt6mnjxQaJI2D

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability would-pay-again-book-classified-ad-1-issue-eca7b783 -d '<json body>'
```

Example prompt: I got a reservation code RES-ABC123 from reserving a classified ad on Would Pay Again — go ahead and pay the $0.2 USDC to confirm and book that ad slot.

## When to prefer this

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.

## Known failure modes

- 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

## How this service works

Confirm and pay for a RESERVED Classified newsletter ad (1 issue, $0.2 USDC). Requires the matching "reservation_code" from POST /api/ads/reserve (free, first) — paying without one, or paying a different SKU than reserved, is not honored as a booking. Body: {"reservation_code": "..."}. Product docs: GET /api/ads (free).

## 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.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object"
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST",
      "PUT",
      "PATCH"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {}
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/would-pay-again-book-classified-ad-1-issue-eca7b783/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from wouldpayagain.com](https://www.zero.xyz/host/wouldpayagain.com/llms.txt)