Federal Register
open-data:federal-register · www.federalregister.gov/developers/documentation/api/v1 ↗
Daily journal of the US government: rules, proposed rules, notices and executive orders.
About the Federal Register API
Federal Register API on Apizie: 1 endpoint (Search documents) returned as clean JSON through one API key. 1 endpoint is live now. Call it over REST at https://zieapi.vercel.app/v1/open-data:federal-register/{endpoint} or from Claude, ChatGPT and Cursor through the Apizie MCP server. Free plan: 1,000 requests a month.
| Project key | open-data:federal-register |
|---|---|
| Status | Live |
| Endpoints | 1 |
| Category | Open Data |
| Source | www.federalregister.gov/developers/documentation/api/v1 |
| Base URL | https://zieapi.vercel.app/v1/open-data:federal-register/{endpoint} |
| For AI tools | OpenAPI spec · Markdown (what is this?) |
Federal Register API FAQ
How do I call the Federal Register API?
Create a free Apizie key, then send GET https://zieapi.vercel.app/v1/open-data:federal-register/documents with the header x-api-key. Every endpoint returns { project, data, timestamp }.
Is the Federal Register API free on Apizie?
Yes. The Free plan includes 1,000 requests a month at 100 requests a minute, no credit card.
Can AI agents use the Federal Register API?
Yes. Add the Apizie MCP server (https://zieapi.vercel.app/mcp) to Claude, ChatGPT, Cursor or VS Code, then ask in plain language. The agent calls run_scraper with project key open-data:federal-register.
What is the status of the Federal Register API?
Live: works with just an Apizie key