How to Use the NationBuilder MCP in OpenAI Agents SDK

Q: How do I handle new signups from a web form with NationBuilder and the OpenAI Agents SDK?

Your web backend can trigger an agent that uses the createnewsignup tool. The agent can then perform follow-up actions, like adding tags or sending a welcome message through another service.

Build production-ready agents that safely manage your NationBuilder supporters with the OpenAI Agents SDK.

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Connect NationBuilder MCP to OpenAI Agents SDK

Create your Vinkius account to connect NationBuilder to OpenAI Agents SDK 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 OpenAI Agents SDK

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Find and Update Supporter Records

Your agent can find any supporter instantly. Use `find_signup_by_email` to pull a specific record or `list_nation_signups` to get a group. The OpenAI SDK lets your agent check these details before taking action. Once you have the right person, your agent can update their profile. It can add tags by first checking `list_signup_tags` or get full context with `get_signup_details`. The SDK's built-in guardrails mean you can review and approve these changes before they go live.

Track Donations and Petitions

Connect your agent directly to your campaign's finances. The `record_donation` tool lets it log contributions as they happen. You can also pull financial data for reports using `list_recent_donations`. Your agent can also keep an eye on grassroots momentum. Give it `list_nation_petitions` to see which causes are gaining traction. This direct access to your NationBuilder data means your agent operates on real-time information, not stale reports.

Manage Your NationBuilder MCP Server

This isn't just about reading data; it's about control. Your agent can add new people to your nation using `create_new_signup`, perfect for forms or event check-ins. It can also manage your digital footprint by getting a list of all your sites with `list_nation_sites`. Before running any operations, your agent can ping the API with `get_api_status` to make sure everything's online. This MCP Server gives your OpenAI agent the tools it needs to be a reliable part of your campaign team.

Setup guide

Set up NationBuilder MCP in OpenAI Agents SDK

Prerequisites

Python 3.10+ installed
openai-agents package (pip install openai-agents)
Active Vinkius subscription with a valid endpoint token

1

Install the SDK

Run pip install openai-agents to install the OpenAI Agents SDK. The MCP integration is built-in — no extra dependencies needed.
2

Connect via SSE transport

Use MCPServerSse with your Vinkius endpoint URL. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. The SDK auto-discovers all NationBuilder tools at runtime.
3

Create your Agent

Pass the MCP to Agent(mcp_servers=[server]). The agent receives NationBuilder tools as native definitions — JSON schemas resolve automatically.
4

Run the agent

Call Runner.run(agent, prompt) to execute. The agent invokes the appropriate NationBuilder tools and returns structured results. Copy the full example on the right to get started.

agent.py

import asyncio
from agents import Agent, Runner
from agents.mcp import MCPServerSse

async def main():
    async with MCPServerSse(
        url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ) as server:
        agent = Agent(
            name="NationBuilder Agent",
            instructions="You have access to NationBuilder tools.",
            mcp_servers=[server],
        )
        result = await Runner.run(agent, "List recent transactions")
        print(result.final_output)

asyncio.run(main())

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Common questions about NationBuilder MCP in OpenAI Agents SDK

It connects through this managed MCP Server. You just pass the server URL to the `MCPServerStreamableHttp` constructor in your Python code. The agent discovers all the NationBuilder tools automatically.

Yes. The OpenAI Agents SDK framework allows you to define which tools an agent has access to. You can create specialized agents, like one that only uses `record_donation` and another that only handles `list_upcoming_events`.

Your credentials are never exposed to the agent. The Vinkius platform handles authentication, providing a single token for the MCP connection. The agent only interacts with the allowed NationBuilder tools.

Your web backend can trigger an agent that uses the `create_new_signup` tool. The agent can then perform follow-up actions, like adding tags or sending a welcome message through another service.

This server only accesses the NationBuilder data you permit. Communication is over TLS, and the Vinkius sandbox where the server runs is ephemeral. The OpenAI SDK's guardrails also let you require human-in-the-loop approval before any `signup` or `donation` data is written.

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