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FreelanceOS

Official registry Finance and payments

Freelance business manager — clients, proposals, invoices, time tracking, scope, and follow-ups.

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 freelanceos 'https://freelance-os-production.up.railway.app/mcp' --header 'X-API-Key: <FreelanceOS API key (get one at https://freelance-os-production.up.railway.app)>'
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "freelanceos": {
            "type": "http",
            "url": "https://freelance-os-production.up.railway.app/mcp",
            "headers": {
                "X-API-Key": "<FreelanceOS API key (get one at https://freelance-os-production.up.railway.app)>"
            }
        }
    }
}
NPM package freelance-os
Claude Code 
claude mcp add freelanceos -e 'FREELANCEOS_API_KEY=<your freelanceos_api_key>' -- npx -y freelance-os@0.2.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "freelanceos": {
            "command": "npx",
            "args": [
                "-y",
                "freelance-os@0.2.2"
            ],
            "env": {
                "FREELANCEOS_API_KEY": "<your freelanceos_api_key>"
            }
        }
    }
}

Environment variables

  • FREELANCEOS_API_KEY required secret FreelanceOS API key for MCP server authentication

Frequently asked questions

What is FreelanceOS?

Freelance business manager — clients, proposals, invoices, time tracking, scope, and follow-ups.

How do I install FreelanceOS?

It runs as a remote server. In Claude Code: claude mcp add --transport http freelanceos 'https://freelance-os-production.up.railway.app/mcp' --header 'X-API-Key: <FreelanceOS API key (get one at https://freelance-os-production.up.railway.app)>'. For other clients, paste the JSON configuration from this page into their MCP settings.

Does FreelanceOS need an API key?

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

Who maintains FreelanceOS?

It is published by Sohlin2. 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.