io.github.chrischall/gemini-mcp MCP Server

io.github.chrischall/gemini-mcp

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What is the io.github.chrischall/gemini-mcp MCP server?

Generate and edit images with Google Gemini (Nano Banana / Nano Banana Pro) image models.

How to install io.github.chrischall/gemini-mcp

Copy-paste configuration for popular MCP clients.

transport: stdio

Config generated by PluginBench — verify against the source before use.

Environment / auth

GEMINI_API_KEY
required
secret
Your Google Gemini API key (aistudio.google.com/apikey)
GEMINI_IMAGE_MODEL
Override the default image model (default: gemini-3.1-flash-image)
GEMINI_OUTPUT_DIR
Default directory for generated images (default: current working directory)
GEMINI_INPUT_DIR
Directory to resolve bare input-image filenames against
GEMINI_UPLOAD_DIR
Restrict local-file uploads to the Gemini Files API to these directories (path.delimiter-separated; unset = unrestricted)

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "gemini-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@chrischall/gemini-mcp"
      ],
      "env": {
        "GEMINI_API_KEY": "<YOUR_GEMINI_API_KEY>",
        "GEMINI_IMAGE_MODEL": "<YOUR_GEMINI_IMAGE_MODEL>",
        "GEMINI_OUTPUT_DIR": "<YOUR_GEMINI_OUTPUT_DIR>",
        "GEMINI_INPUT_DIR": "<YOUR_GEMINI_INPUT_DIR>",
        "GEMINI_UPLOAD_DIR": "<YOUR_GEMINI_UPLOAD_DIR>"
      }
    }
  }
}