# ouchanip x402 Utility APIs

> ouchanip x402 Utility APIs is a free API for AI agents from ouchanip.github.io, Free, status unknown (last checked 2026-09-15).

Pay-per-request utility APIs (QR code, email validation, PDF invoice, image resize, DNS lookup, and more) requiring no accounts or API keys — payments made in USDC on Base L2 via x402.

## Facts

- Endpoint: POST https://ouchanip.github.io/x402-docs/
- Price: Free
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/ouchanip-x402-apis-b007e30a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_rCU-ZkxgAG5esIkwHQv4g

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 ouchanip-x402-apis-b007e30a -d '<json body>'
```

Example prompt: Generate a QR code for the URL https://example.com — I don't want to create an account anywhere, just pay per use with USDC on Base.

## When to prefer this

Prefer this endpoint when you need lightweight utility operations (QR codes, email validation, PDF invoices, image resizing, DNS lookups) on a true pay-per-request basis with no account setup, no API key management, and USDC micropayments on Base L2 via x402 protocol. Ideal for agents or serverless workflows that want frictionless, one-off utility calls billed in crypto.

## Known failure modes

- Insufficient USDC balance on Base L2 — payment fails and request is rejected
- Invalid input for the specific utility (e.g. malformed email or bad image URL) — returns validation error
- Unsupported operation or endpoint path — returns 404 or method not allowed
- Network or Base L2 RPC issues — payment transaction may time out

## How this service works

10 pay-per-request utility APIs including QR code generation, email validation, PDF invoice, image resize, DNS lookup, and more. No accounts, no API keys — just USDC on Base L2.

## Output

Depending on the specific utility called, the agent receives a QR code image, email validation result, PDF invoice binary, resized image, DNS record data, or other utility output — all delivered without requiring account creation or API keys.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/ouchanip-x402-apis-b007e30a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ouchanip.github.io](https://www.zero.xyz/host/ouchanip.github.io/llms.txt)