# Services from x402.alchemy.com on Zero

> x402.alchemy.com serves 7 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/x402.alchemy.com
Live health (JSON, refreshed every minute): https://www.zero.xyz/host/x402.alchemy.com/health.json

## Services

- [Alchemy Prices API — Current Token Prices by Symbol](https://www.zero.xyz/c/alchemy-62ba099c/llms.txt): $0.001000/call via x402. Returns the current USD price(s) for one or more cryptocurrency tokens identified by ticker symbol (e.g. ETH, BTC, USDC).
- [Alchemy Portfolio API — Multi-Chain NFT Holdings by Wallet Address](https://www.zero.xyz/c/alchemy-0a0be618/llms.txt): $0.001000/call via x402. Returns all NFT holdings across multiple blockchains for one or more wallet addresses in a single call.
- [Alchemy Prices API — Current Token Prices by Contract Address](https://www.zero.xyz/c/alchemy-bf85c539/llms.txt): $0.001000/call via x402. Returns current USD prices for one or more tokens identified by contract address, supporting multiple blockchain networks.
- [Alchemy Prices API — Historical Token Prices](https://www.zero.xyz/c/alchemy-ca74b8dc/llms.txt): $0.001000/call via x402. Returns historical token prices over a specified time range for one or more tokens.
- [Alchemy Portfolio API — Multi-Chain Token Balances by Address](https://www.zero.xyz/c/alchemy-d5de67d5/llms.txt): $0.001000/call via x402. Returns multi-chain ERC-20 and native token balances with metadata for one or more wallet addresses across supported blockchains.
- [Alchemy Blockchain RPC (x402 Pay-Per-Call)](https://www.zero.xyz/c/x402-alchemy-com-ef287eda/llms.txt): $0.001/call via x402. Provides paid JSON-RPC access to blockchain nodes across supported chain networks via Alchemy, billed at $0.001 USDC per call using the x402 payment protocol.
- [Alchemy NFT API — Get Owners For Contract](https://www.zero.xyz/c/x402-alchemy-com-aa28db16/llms.txt): $0.001000/call via x402. Returns all wallet addresses that own tokens from a specified NFT contract on a given 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)