How to Use the NationBuilder MCP in Claude

Connect the NationBuilder MCP Server to Claude Desktop and manage campaigns without touching a spreadsheet.

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Connect NationBuilder MCP to Claude Desktop

Create your Vinkius account to connect NationBuilder 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 NationBuilder with Claude Desktop

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Query Voter and Donor Data in Claude

The `list_nation_signups` tool pulls your supporter list straight into Claude Desktop via this MCP integration. You ask your agent for the latest volunteers, and it hits the API immediately. No exporting CSV files or fighting with filters in a web dashboard. When someone emails you, use `find_signup_by_email` to pull their full profile. If they aren't in the system, tell Claude to run `create_new_signup` and add them on the spot. You handle the conversation while the agent handles the database.

Track Campaign Events and Petitions

Campaign managers live and die by the calendar. Give Claude access to `list_upcoming_events` to build your weekly briefing automatically. It grabs times, locations, and RSVPs so you know exactly where your organizers need to be. You can also monitor digital engagement. The `list_nation_petitions` tool shows you which issues actually gain traction. Tell your agent to cross-reference those petitions with `list_recent_donations` to see if your messaging drives real fundraising.

The NationBuilder MCP Server Advantage

This NationBuilder MCP server turns a conversational AI into a campaign operator. You just connect the endpoint in your settings and start working. The `get_api_status` tool ensures you always know if the connection is live before you start pulling heavy data. Managing tags and segments usually takes hours of clicking. Now you just ask Claude to run `list_custom_people_lists` or `list_signup_tags` to see how your electorate is organized. It gives you the exact state of your campaign infrastructure in seconds.

Setup guide

Set up NationBuilder 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 NationBuilder 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 NationBuilder 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 nationbuilder-mcp.

json

{
  "mcpServers": {
    "nationbuilder-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 NationBuilder. 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.

Why Choose Vinkius

Vinkius connects your tools to AI with real-time monitoring and automatic cost savings — all from one dashboard.

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Real-time monitoring

Live

visibility into every interaction

Connect your favorite tools to your AI and see exactly what's happening — every request, every response, in real time.

Built-in savings

60%

lower AI costs

Vinkius compresses data between your apps and your AI automatically. Lower bills every month — no configuration required.

Single dashboard

One

place for every integration

Every tool your AI connects to, managed from a single screen. One account, complete control.

Common questions about NationBuilder MCP in Claude Desktop

Open your configuration file from the developer settings. Add the server command and arguments under the mcpServers key. Save the file and fully restart the application to see your tools.

Yes, it handles both reads and writes. Your agent can execute `record_donation` or `create_new_signup` based on your instructions. You just tell it what to log.

You can connect it there too. Go to the integrations menu and paste your remote MCP server URL. The tools will appear in your chat immediately.

The agent reads the error message and usually retries or asks you for clarification. It might prompt you to check the connection using `get_api_status`.

Your donation histories and supporter emails stay between your local machine and the API endpoint. The connection operates in a V8 Isolate Sandbox that destroys itself after the session ends. No external logging occurs.

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