fourzerotwo
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government by fourzerotwo

Agencies

Every federal agency that publishes in the Register.

Agencies Free

Every federal agency that publishes in the Register.

cost
Free then $0.001 / call
MCP tool
federal-register__agencies
method
GET

Free up to 50 calls a day over MCP (500 with a free key), then $0.001 per call by card credit or USDC. Free key · Pay by card

GET https://fourzerotwo.si/v1/federal-register/agencies

# free: send a free key from https://fourzerotwo.si/free
curl -H "X-API-Key: fzt_…" "https://fourzerotwo.si/v1/federal-register/agencies"

# no key: returns 402 with the price, for x402 agents
curl -i "https://fourzerotwo.si/v1/federal-register/agencies"

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__agencies", "arguments": {}}

More from US Federal Register

  • Search documents — Rules, proposed rules, notices and presidential documents matching a term.
  • Document — One Federal Register document by document number.
  • Public inspection today — Documents on public inspection ahead of publication.

Source: Office of the Federal Register via federalregister.gov. Public domain.