LocalFree server, account needed

Retain so MCP server

retain-so/mcp-server

Model Context Protocol server for Retain: let AI agents query churn risk and act on retention.

1 GitHub stars
Source code

Install Retain so in Claude Code

Claude Code
claude mcp add retain-so -e RETAIN_API_KEY=... -- npx -y @retain-so/mcp-server
mcp.json (Claude Desktop, Cursor, VS Code, Windsurf)
{
  "mcpServers": {
    "retain-so": {
      "command": "npx",
      "args": [
        "-y",
        "@retain-so/mcp-server"
      ],
      "env": {
        "RETAIN_API_KEY": "..."
      }
    }
  }
}

Replace each ... with your own value.

Frequently asked questions

What does the Retain so MCP server do?

Model Context Protocol server for Retain: let AI agents query churn risk and act on retention.

Is the Retain so MCP server free?

The server is free, but you will likely need an account. The server itself is free, but it connects to a service that needs an account or API key, which may have paid tiers. Check the provider for current pricing.

Does Retain so run locally or remotely?

Local. Runs on your machine (stdio). You install it with npx, uvx, Docker or from source.

How do I add Retain so to Claude Code?

Run: claude mcp add retain-so -e RETAIN_API_KEY=... -- npx -y @retain-so/mcp-server

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