# Alchemy API

Category: [Crypto](https://free-web-services.com/web-services/unit-convertors/crypto/)  
Page: https://free-web-services.com/web-services/unit-convertors/crypto/alchemy-api.html  
Documentation: https://www.alchemy.com/docs

Alchemy gives node access to Ethereum and other blockchains through JSON-RPC, for example to read the latest block or a balance without running a node. Requests are POST calls with a JSON body and JSON answers. Free with a free API key for 30 million compute units a month and 15 requests a second. An official MCP server at https://mcp.alchemy.com/mcp lets AI agents read chain data.

- API key: Needed, free
- Pricing: Free with a free API key for 30 million compute units a month and 15 requests a second.
- Formats: JSON
- Interface: REST, MCP
- Provider: alchemy.com
- Last checked: Working on November 9th, 2026

Example request:

```sh
curl -X POST 'https://eth-mainnet.g.alchemy.com/v2/YOUR_API_KEY' \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"eth_blockNumber","params":[]}'
```

Replace YOUR_API_KEY with your own key.