customerio for Gemini CLI

io.usefulapi/customerio

Query people, segments, campaigns, and message deliveries; send transactional email or broadcasts.

client:Gemini CLI transport:streamable-http

Install customerio in Gemini CLI

~/.gemini/settings.json · windows: %USERPROFILE%\.gemini\settings.json

{
  "mcpServers": {
    "customerio": {
      "httpUrl": "https://customerio.usefulapi.io/mcp"
    }
  }
}

Gemini expands $VAR and ${VAR} inside env values, so a secret can live in your shell rather than this file. Gemini CLI docs