# Services from tools.nythosx.com on Zero

> tools.nythosx.com 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/tools.nythosx.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/tools.nythosx.com/health.json

## Services

- [NythosX Gas Price Comparator](https://www.zero.xyz/c/nythosx-gas-price-comparator-3b0f8936/llms.txt): $0.005/call via x402. Returns current transaction cost estimates in USD across up to six blockchains, ranked from cheapest to most expensive, for a given transaction type and speed tier.
- [NythosX URL to Markdown Reader](https://www.zero.xyz/c/nythosx-url-to-markdown-reader-0c0946fc/llms.txt): $0.003/call via x402. Fetches a public web page and returns its content as clean, structured Markdown with metadata
- [NythosX Gas Price API](https://www.zero.xyz/c/nythosx-gas-price-api-b1050987/llms.txt): $0.002/call via x402. Returns current gas fees, block data, and estimated transaction costs for a specified blockchain network

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)