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mcp/harbor
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pixelletter mcp for Grok

io.github.bitterdev/pixelletter-mcp

Send physical letters and faxes through the PixelLetter interface, test mode included.

client:Grok transport:stdio runtime:npm

Install pixelletter mcp in Grok

.mcp.json (in your project root)

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

{
  "mcpServers": {
    "pixelletter-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "pixelletter-mcp"
      ],
      "env": {
        "PIXELLETTER_EMAIL": "<PIXELLETTER_EMAIL>",
        "PIXELLETTER_PASSWORD": "<PIXELLETTER_PASSWORD>",
        "PIXELLETTER_DEFAULT_DESTINATION": "<PIXELLETTER_DEFAULT_DESTINATION>",
        "PIXELLETTER_FORCE_TEST_MODE": "<PIXELLETTER_FORCE_TEST_MODE>"
      }
    }
  }
}

Grok Build reads Claude Code's .mcp.json and Claude Desktop's config unchanged, so a server you have already set up there needs nothing new. The Grok web app and X integration do not take custom servers. Grok docs

pixelletter mcp in other clients

pixelletter mcp MCP server