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government by fourzerotwo
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Rules, proposed rules, notices and presidential documents matching a term.
Search documents Free
Rules, proposed rules, notices and presidential documents matching a term.
- cost
- Free then $0.003 / call
- MCP tool
- federal-register__search
- method
- GET
Free up to 50 calls a day over MCP (500 with a free key), then $0.003 per call by card credit or USDC. Free key · Pay by card
GET https://fourzerotwo.si/v1/federal-register/search
| Param | Type | Description |
|---|---|---|
| q | string | Search term |
# free: send a free key from https://fourzerotwo.si/free curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/federal-register/search?q=artificial%20intelligence" # no key: returns 402 with the price, for x402 agents curl -i "https://fourzerotwo.si/v1/federal-register/search?q=artificial%20intelligence"
by fourzerotwo
Report this endpoint
Use it from an AI agent (MCP)
Add the server once, then ask for this data in plain English. The agent finds the endpoint with search_apis and runs it with call_api.
{
"mcpServers": {
"fourzerotwo": { "type": "http", "url": "https://fourzerotwo.si/mcp" }
}
}
# the call the agent makes
call_api {"tool": "federal-register__search", "arguments": {"q":"artificial intelligence"}}
More from US Federal Register
- Document — One Federal Register document by document number.
- Public inspection today — Documents on public inspection ahead of publication.
- Agencies — Every federal agency that publishes in the Register.
Source: Office of the Federal Register via federalregister.gov. Public domain.