How do I install the congressmcp mcp server?

Use a recorded configuration for your client, replace example credential values and paths, and verify the documented runtime. Restart or reconnect the client, then inspect the available tools.

What credentials does it need?

It reads `CONGRESS_API_KEY` from the environment. Store these in your client's env block or a secrets manager — never commit them to a repository — and grant the narrowest scope that still covers your use case.

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CongressMCP MCP Server

Access live U.S. Congressional data — bills, votes, members, committees, hearings, and more — through natural language via the [Model Context

Local serverstdio

What is the CongressMCP MCP Server?

Access live U.S. Congressional data — bills, votes, members, committees, hearings, and more — through natural language via the [Model Context

More MCP options

Compare MCP servers by category, or browse hosted MCP servers if you prefer an endpoint over a local process.

Maintainer setup documentation.

Recorded tools

Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.

Tool	What it does
Toolset	Operations
Bills	15
Laws	2
Amendments	7
search_bill_text	Searches full bill text and returns ranked addressable chunks with snippets, match_contexts, and amendatory flags
get_bill_section	Retrieves a qualified section or chunk id, with max_bytes measured against UTF-8 bytes of the returned text field
get_bill_toc	Returns a shallow navigation tree for finding section ids
Platform	Path
Linux	$XDG_CACHE_HOME/congressmcp, else ~/.cache/congressmcp
macOS	~/Library/Caches/congressmcp
Windows	%LOCALAPPDATA%\congressmcp\Cache

How to install the CongressMCP MCP Server

{
  "mcpServers": {
    "congressmcp": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "congressmcp"
      ],
      "env": {
        "CONGRESS_API_KEY": "YOUR_CONGRESS_API_KEY"
      }
    }
  }
}

From the project documentation. Replace placeholders and example paths before connecting.

Configuration

Variable	Description	Required
CONGRESS_API_KEY	Declared in the maintainer’s client configuration.	Check documentation

Example prompts to try

“Use CongressMCP to Toolset.”
“Use CongressMCP to Bills.”
“Use CongressMCP to Laws.”

Frequently asked questions

Access live U.S. Congressional data — bills, votes, members, committees, hearings, and more — through natural language via the [Model Context Confirm the tools offered by your installed version in the connected client. Tool availability and permissions depend on the server and account configuration.