# Services from x420.dev on Zero

> x420.dev serves 3 paid API services for AI agents, indexed by Zero. Each is callable per call with payment handled by Zero.

Canonical page: https://www.zero.xyz/host/x420.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x420.dev/health.json

## Services

- [x420.dev Buy 5 USDC x420 Tokens](https://www.zero.xyz/c/x420-dev-5d8f699a/llms.txt): $5/call via x402. Purchase $5 USDC worth of x420 tokens via a paid API endpoint
- [x420.dev Buy 1 USDC of x420 Tokens](https://www.zero.xyz/c/x420-dev-8ca59437/llms.txt): $1/call via x402. Purchases 1 USDC worth of x420 tokens on behalf of the caller via a paid API call
- [x420.dev Spark Token Purchase](https://www.zero.xyz/c/x420-dev-f6ef9f0d/llms.txt): $1/call via x402. Purchases $1 USDC worth of x420 tokens via the Spark endpoint using x402 payment protocol

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

- [Zero catalog index](https://www.zero.xyz/llms.txt)