# Services from usd1.x420.dev on Zero

> usd1.x420.dev serves 2 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/usd1.x420.dev
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/usd1.x420.dev/health.json

## Services

- [USD1 Token Purchase - 1 USDC (x420.dev)](https://www.zero.xyz/c/usd1-token-purchase-1-usdc-x420-dev-c79058d5/llms.txt): $1/call via x402. Purchases USD1 stablecoin tokens worth 1 USDC on the Base network via the x402 payment protocol, returning token receipt details and transaction hashes.
- [USD1 Token Purchase - 5 USDC (x420.dev)](https://www.zero.xyz/c/usd1-token-purchase-5-usdc-x420-dev-48ccc357/llms.txt): $5/call via x402. Purchases 5 USDC worth of USD1 stablecoin tokens from the x420.dev contract (0x618Fb9A538B0f7756648dC9A46f532050c86eb07) and returns transaction details

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)