# Services from oussapi.duckdns.org on Zero

> oussapi.duckdns.org serves 6 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/oussapi.duckdns.org
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/oussapi.duckdns.org/health.json

## Services

- [Crypto Data Node x402 — Spot Price Lookup](https://www.zero.xyz/c/crypto-data-node-x402-spot-price-lookup-c71f2ae9/llms.txt): $0.001/call via x402. Returns the current spot price of a cryptocurrency symbol (e.g. BTC, ETH, SOL) sourced from Binance, paid per-request via USDC x402
- [Polymarket Trending Markets by Tag](https://www.zero.xyz/c/polymarket-trending-markets-by-tag-20521122/llms.txt): $0.005/call via x402. Returns the top Polymarket prediction markets ranked by 24-hour trading volume, filtered by tag (crypto or sports)
- [Binance Futures Funding Rate API](https://www.zero.xyz/c/binance-futures-funding-rate-api-cd56bdbd/llms.txt): $0.002/call via x402. Returns the current funding rate for a Binance perpetual futures contract by symbol (e.g. BTC, ETH)
- [Binance Spot Price API (oussapi.duckdns.org)](https://www.zero.xyz/c/binance-spot-price-api-oussapi-duckdns-org-09390a63/llms.txt): $0.001/call via x402. Returns the real-time spot price for a given cryptocurrency symbol (e.g. BTC, ETH, SOL) sourced from Binance.
- [Crypto Data Node x402 – Binance Futures Funding Rate](https://www.zero.xyz/c/crypto-data-node-x402-binance-futures-funding-rate-c543a21c/llms.txt): $0.002/call via x402. Returns the current Binance Futures funding rate for a given crypto symbol (e.g. BTC, ETH), paid per-request via USDC x402 micropayment.
- [oussapi Batch Binance Spot Prices](https://www.zero.xyz/c/oussapi-batch-binance-spot-prices-ea80fd35/llms.txt): $0.002/call via x402. Fetches current spot prices from Binance for multiple cryptocurrency symbols in a single batch request

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)