How to Use the U.S. Congress MCP in Claude

Q: Does Claude Desktop support listing historical U.S. Congress sessions?

Yes, it does. The server contains the listcongresssessions tool. You can specify any historical Congress number to pull its start and end dates, giving you a clear timeline.

Q: Can I use the MCP Server to list U.S. Congress committees in Claude Desktop?

Absolutely. Use listcongresscommittees to pull a roster of all existing congressional committees, which is critical for understanding legislative jurisdiction.

Q: If I need details on past U.S. Congress nominations, can Claude Desktop help me?

Yes. The listcongressnominations tool pulls records of executive and judicial nominations handled by the US Congress, providing detailed historical context.

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Connect U.S. Congress MCP to Claude Desktop

Create your Vinkius account to connect U.S. Congress to Claude Desktop and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup U.S. Congress with Claude Desktop

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Access U.S. Congress Data in Claude Desktop

The `list_congress_members` tool fetches current or past members of the US Congress. You can build reports that list specific committee assignments, biographical data, and historical service dates for any member. Need to check who worked on a treaty? The server includes `list_congress_treaties`, letting you pull records detailing treaties handled by Congress.

Query Bills and Amendments with Claude Desktop

To get the full scoop on legislation, use `get_bill_details`. This tool pulls every detail for a specific legislative bill into your chat window. You'll see everything from sponsorship history to current status. Furthermore, the `list_congress_amendments` function lists all related amendments, helping you trace exactly how and why a bill changed over time.

Track Congressional History with Claude Desktop

The server lets you see historical congressional sessions using `list_congress_sessions`. You just specify the Congress number (like 118th) and get the exact start and end dates for that session. Don't forget nominations. The `list_congress_nominations` tool provides a clean record of executive and judicial appointments, making your research complete.

Setup guide

Set up U.S. Congress MCP in Claude Web or Desktop

1

Open Claude Settings

Go to claude.ai, click your profile icon, then navigate to Customize → Connectors.
2

Add Custom Connector

Click the "+" button and select Add custom connector. Paste your Vinkius endpoint URL: https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. For OAuth-protected servers, expand Advanced settings to add credentials.
3

Start a conversation

Open a new chat. The U.S. Congress MCP tools are available immediately — no restart needed.

Endpoint URL

https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp

No configuration file needed — paste the URL directly in the Claude web interface.

Available on Free (1 connector), Pro, Max, Team, and Enterprise plans.

Prerequisites

Claude Desktop installed (macOS or Windows)
Active Vinkius subscription with a valid endpoint token

1

Open Claude Desktop Settings

Click the menu icon at the top-left corner, go to Settings → Developer → Edit Config. This opens claude_desktop_config.json in your default text editor.
2

Paste the U.S. Congress MCP configuration

Copy the JSON snippet on the right into the mcpServers object. Replace [YOUR_TOKEN_HERE] with your endpoint token from cloud.vinkius.com.
3

Restart Claude Desktop

Close and reopen the application. Claude needs a full restart to load new MCPs — refreshing a conversation is not enough.
4

Verify the connection

Open a new conversation. Click the 🔌 icon at the bottom of the message input. You should see tools listed under us-congress-mcp.

json

{
  "mcpServers": {
    "us-congress-mcp": {
      "url": "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    }
  }
}

Get your connection token →

Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Congress.gov. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about U.S. Congress MCP in Claude Desktop

You simply ask Claude Desktop to run the relevant tool. For instance, 'What are the current committee assignments for members of U.S. Congress?' and your agent runs the `list_congress_members` function right there.

Yes, it does. The server contains the `list_congress_sessions` tool. You can specify any historical Congress number to pull its start and end dates, giving you a clear timeline.

The server handles public legislative bills, amendments, members' names, and treaties. All this historical congressional record data is used for context within your chat session.

Absolutely. Use `list_congress_committees` to pull a roster of all existing congressional committees, which is critical for understanding legislative jurisdiction.

Yes. The `list_congress_nominations` tool pulls records of executive and judicial nominations handled by the US Congress, providing detailed historical context.

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