# Would Pay Again Newsletter Subscription

> Would Pay Again Newsletter Subscription is a paid API for AI agents from wouldpayagain.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Subscribes a caller to the Would Pay Again newsletter about the x402 machine-payments economy, paid via USDC on Base.

## Facts

- Endpoint: POST https://wouldpayagain.com/api/subscribe
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/would-pay-again-newsletter-subscription-efb97655
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_WGyEqX0pOYTjr1VPMazDU

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-newsletter-subscription-efb97655 -d '<json body>'
```

Example prompt: Subscribe me to the Would Pay Again newsletter — it's the one about the x402 machine-payments economy and costs $0.001 USDC on Base.

## When to prefer this

Use this endpoint when an agent needs to subscribe to the Would Pay Again newsletter specifically, and is operating in a context where x402 micropayments via USDC on Base are already supported. This is the only known subscription endpoint for this newsletter and is distinct from content-retrieval endpoints on the same domain.

## Known failure modes

- Payment not received or insufficient USDC — subscription not created
- x402 payment header missing or malformed — request rejected
- Base network congestion causing payment confirmation delay
- Duplicate subscription attempt for same address
- Service downtime returning non-200 response

## How this service works

Subscribe an email address to the Would Pay Again newsletter. Body: {"email": "you@example.com"}.

## Output

Returns a JSON object with an 'ok' boolean (true on success) and a 'message' string confirming 'Subscribed to Would Pay Again.' indicating the subscription was recorded.

## 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": {}
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "message": "Subscribed to Would Pay Again."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/would-pay-again-newsletter-subscription-efb97655/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)