# Earn Shop PDF Download

> Earn Shop PDF Download is a paid API for AI agents from 46-225-73-168.sslip.io, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Delivers a pay-per-download PDF document in exchange for a USDC micropayment on Base via the x402 protocol, returning the binary file after successful payment settlement.

## Facts

- Endpoint: POST https://46-225-73-168.sslip.io/buy/ukrr
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/earn-shop-pdf-download-a41f02b3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6nHJxIpGLy9PfTJAsrCox

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 earn-shop-pdf-download-a41f02b3 -d '<json body>'
```

Example prompt: I want to buy and download the PDF at the Earn Shop listing /buy/ukrr — pay for it using my x402 payment payload and give me the file.

## When to prefer this

Use this endpoint when you need to programmatically purchase and retrieve a specific pay-per-download PDF document using USDC micropayments on the Base network via the x402 protocol or a direct on-chain transfer. It is ideal for agents automating crypto-native content purchases where traditional subscription or API-key billing is not available.

## Known failure modes

- Invalid or unconfirmed tx hash — payment not recognized, no file delivered
- Insufficient USDC amount in transfer — settlement rejected
- Malformed x402 payment payload (bad base64 or JSON) — 400 error
- Payment already used (replay) — duplicate payment rejected
- Network or blockchain congestion causing settlement timeout
- File delivery failure triggers automatic refund

## How this service works

Pay-per-download PDF documents in USDC on Base via the x402 protocol. Settlement runs through the public x402 facilitator; a direct transfer + tx-hash route is also accepted. Failed delivery is refunded.

## Output

A binary PDF file is returned directly in the response body upon successful payment verification. If payment settlement fails or delivery cannot be completed, a refund is issued and no file is returned.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "tx": {
   "type": "string",
   "description": "Direct-transfer route: tx hash of a USDC transfer to payTo covering the price"
  },
  "xpayment": {
   "type": "string",
   "description": "x402 payment payload (base64 JSON), same as the X-PAYMENT/PAYMENT-SIGNATURE header"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "string",
 "format": "binary"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/earn-shop-pdf-download-a41f02b3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 46-225-73-168.sslip.io](https://www.zero.xyz/host/46-225-73-168.sslip.io/llms.txt)