# Services from chat.sperax.io on Zero

> chat.sperax.io 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/chat.sperax.io
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/chat.sperax.io/health.json

## Services

- [SperaxOS DeFi Yield Pools API](https://www.zero.xyz/c/speraxos-defi-yield-pools-api-4709535f/llms.txt): $0.01/call via x402. Returns ranked DeFi yield pool data (APY, TVL, chain, project) across protocols, filtered by TVL, payable per-request with USDC via x402.
- [SperaxOS Fear & Greed Index API](https://www.zero.xyz/c/speraxos-fear-greed-index-api-511624ec/llms.txt): $0.001/call via x402. Returns the current and historical Crypto Fear & Greed Index value and classification, payable per-request with USDC via x402.
- [SperaxOS x402 Markets API](https://www.zero.xyz/c/speraxos-x402-markets-api-900ad561/llms.txt): $0.005/call via x402. Returns paginated cryptocurrency market data (price, volume, market cap, 24h change) for all coins, payable per-request via x402 USDC micropayment on Base.

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)