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FreeToolHub

Official registry Finance and payments

44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.

Source code Website

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

Remote (streamable-http)
Claude Code 
claude mcp add --transport http freetoolhub 'https://freetoolhub.org/api/mcp' --header 'X-API-Key: <Optional. Free for 50 tool calls per IP per day without a key. Supply a key to lift the daily quota.>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "freetoolhub": {
            "type": "http",
            "url": "https://freetoolhub.org/api/mcp",
            "headers": {
                "X-API-Key": "<Optional. Free for 50 tool calls per IP per day without a key. Supply a key to lift the daily quota.>"
            }
        }
    }
}

Frequently asked questions

What is FreeToolHub?

44 calculators for AI agents: US tax, finance, business + an MCP engineering & security suite.

How do I install FreeToolHub?

It runs as a remote server. In Claude Code: claude mcp add --transport http freetoolhub 'https://freetoolhub.org/api/mcp' --header 'X-API-Key: <Optional. Free for 50 tool calls per IP per day without a key. Supply a key to lift the daily quota.>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does FreeToolHub need an API key?

Yes. It expects X-API-Key, which you set in its configuration.

Is FreeToolHub open source?

Its code is public on GitHub, but the repository does not declare a standard license.

Who maintains FreeToolHub?

It is published by cavan1977. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.