How to Use the NationBuilder MCP in CrewAI

Q: How do I set up a CrewAI agent to only use specific NationBuilder tools?

When you define your MCPServerHTTP tool in CrewAI, use the toolfilter argument. You can provide a list of tool names like 'listrecentdonations', 'getsignupdetails' to restrict what that agent can do.

Q: Is it possible for a CrewAI crew to manage multiple NationBuilder sites?

Yes. An agent can first call listnationsites to get a list of all your sites. Then, it can iterate through them, using the site slug in subsequent calls to tools like listnationsignups to operate on each site individually.

Deploy autonomous agent crews to manage your NationBuilder community and mobilize supporters with this MCP integration for CrewAI.

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Connect NationBuilder MCP to CrewAI

Create your Vinkius account to connect NationBuilder to CrewAI 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 CrewAI

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A Crew to Monitor Your Community

Assign a 'Monitor Agent' to keep an eye on your NationBuilder activity. This agent's job is to periodically run `list_recent_donations` and `list_nation_petitions`. It watches for new activity and passes findings to other agents. When the Monitor Agent spots a large donation, it can task an 'Analyst Agent' to use `get_signup_details` and `list_signup_tags` to learn more about the donor. This creates a complete picture of supporter engagement without any human intervention.

Automate Supporter Outreach with a CrewAI Team

Build a crew to manage supporter engagement. A 'Recruiter Agent' can periodically use `list_nation_signups` to find new people who don't have any tags. It then passes these signups to a 'Welcome Agent.' The Welcome Agent's job could be to use a different tool to add them to a welcome email series. Your CrewAI agents work together to ensure no new supporter falls through the cracks.

Your CrewAI Agents Can Manage Campaigns

Let a crew manage event recruitment. An 'Events Agent' uses `list_upcoming_events` to find events that are under-attended. It then tasks a 'Targeting Agent' to find potential attendees. The Targeting Agent uses `list_custom_people_lists` to find groups of people who might be interested and passes them to an 'Outreach Agent' for follow-up. This MCP Server gives your crew the data to make smart decisions autonomously.

Setup guide

Set up NationBuilder MCP in CrewAI

Prerequisites

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

1

Install CrewAI
Run pip install crewai to install the framework. MCP support is built-in via the mcps parameter.
2

Add the MCP URL to your agent
Pass your Vinkius endpoint directly to the mcps list. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com. CrewAI handles tool discovery and caching automatically.
3

Kick off your crew
Create a Crew with your agent and tasks. Call crew.kickoff() — the agent will automatically invoke NationBuilder tools as needed.

crew.py

from crewai import Agent, Task, Crew

agent = Agent(
    role="NationBuilder Analyst",
    goal="Access and analyze NationBuilder data via MCP.",
    backstory="Expert analyst with direct NationBuilder access.",
    mcps=[
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
    ],
)

task = Task(
    description="List recent NationBuilder transactions",
    agent=agent,
    expected_output="A summary of recent activity",
)

crew = Crew(agents=[agent], tasks=[task])
result = crew.kickoff()
print(result)

Get your connection token →

Prerequisites

Python 3.10+ installed
crewai + crewai-tools packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run pip install crewai crewai-tools. The MCPServerAdapter handles lifecycle management and tool conversion.
2

Connect with MCPServerAdapter
Use MCPServerAdapter as a context manager with SseServerParameters pointing to your Vinkius endpoint. The adapter automatically manages connection lifecycle.
3

Assign tools and run
Pass the returned mcp_tools to your agent's tools parameter. The adapter converts MCP tools to native BaseTool objects compatible with all CrewAI agents.

crew.py

from crewai import Agent, Task, Crew
from crewai_tools import MCPServerAdapter
from mcp import SseServerParameters

server_params = SseServerParameters(
    url="https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
)

with MCPServerAdapter(server_params) as mcp_tools:
    agent = Agent(
        role="NationBuilder Analyst",
        goal="Access and analyze NationBuilder data via MCP.",
        backstory="Expert analyst with direct NationBuilder access.",
        tools=mcp_tools,
    )

    task = Task(
        description="List recent NationBuilder transactions",
        agent=agent,
        expected_output="A summary of recent activity",
    )

    crew = Crew(agents=[agent], tasks=[task])
    result = crew.kickoff()
    print(result)

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.

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Common questions about NationBuilder MCP in CrewAI

When you define your `MCPServerHTTP` tool in CrewAI, use the `tool_filter` argument. You can provide a list of tool names like `['list_recent_donations', 'get_signup_details']` to restrict what that agent can do.

Yes, that's a perfect use case for CrewAI. The first agent would use `find_signup_by_email`, and upon success, it would pass the supporter's ID in the shared context to a second agent, which would then call `record_donation`.

You can create a simple 'Guardian Agent' that runs first in a sequential crew. Its only job is to call `get_api_status`. If it fails, the crew can stop or report an error.

Yes. An agent can first call `list_nation_sites` to get a list of all your sites. Then, it can iterate through them, using the site slug in subsequent calls to tools like `list_nation_signups` to operate on each site individually.

The connection is secured by your Vinkius MCP endpoint token. The server processes tool calls like `find_signup_by_email` or `list_recent_donations` in a secure, isolated environment for each request. Vinkius never retains your supporter data after the operation is complete.

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