How to Use the Charity Navigator MCP in Claude

Q: How many charities can I search for at once with this MCP App?

The searchcharities tool supports pagination. You can request up to 1000 results per page and go up to 10 pages deep. That gives you access to 10,000 results for a single, multi-step search.

Check charity ratings and financial health right inside Claude Desktop before you donate.

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Connect Charity Navigator MCP to Claude Desktop

Create your Vinkius account to connect Charity Navigator 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 Charity Navigator with Claude Desktop

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Claude

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Find reputable nonprofits instantly

The `search_charities` tool lets you ask Claude to find organizations by name, cause, or location. You can filter by rating, size, and more to narrow down the list. Once you have a few options, use `get_charity_ratings` to see their full rating history and `get_charity_advisories` to check for any red flags. It turns hours of research into a quick conversation.

Get the full story on any charity

Give your agent a charity's EIN, and the `get_charity` tool pulls everything: mission statement, financials, contact info, even links to their tax filings. It's all the raw data you need for serious due diligence. You can also explore different cause areas with `get_categories`. Ask Claude to list all the environmental or animal welfare categories, then use those IDs to run a more focused search.

Your MCP Server for due diligence

This server connects Claude Desktop to Charity Navigator's entire database. Instead of manually searching their website, you just ask questions in plain English. Find out which organizations have active advisories against them with `get_all_advisories`. The MCP server handles the API calls in the background. You just get the answers you need, right in your chat window. It's the fastest way to verify a nonprofit is trustworthy.

Setup guide

Set up Charity Navigator 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 Charity Navigator 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 Charity Navigator 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 charity-navigator-mcp.

json

{
  "mcpServers": {
    "charity-navigator-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 Charity Navigator. 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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Common questions about Charity Navigator MCP in Claude Desktop

Just ask Claude to search for the charity by name using the `search_charities` tool. Then, follow up by asking for its ratings with `get_charity_ratings` and any warnings with `get_charity_advisories`. This gives you a clear picture of their standing.

Yes. Ask Claude to search for charities, specifying the state as "New York" and the cause as "animal welfare". The agent will use the `search_charities` tool with the right filters to get you a list.

First, find the charity's EIN by searching its name. Then, ask Claude to "get charity info for EIN [number]". It will use the `get_charity` tool to pull back detailed financial data, including revenue, expenses, and assets.

The `search_charities` tool supports pagination. You can request up to 1000 results per page and go up to 10 pages deep. That gives you access to 10,000 results for a single, multi-step search.

No. The MCP server only processes the charity search queries you send, like names or cause areas. It never sees your chats, local files, or any other personal information. Vinkius handles the connection with a single token, keeping your Claude account separate.

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