Letterbox MCP配置与使用教程

{
  "id": "io.github.dovahkiin-v/letterbox",
  "type": "mcp-server",
  "version": "1.2.2",
  "displayName": "Letterbox",
  "description": "File-based comms protocol for AI-to-AI dialogue between terminal agents.",
  "repository": {
    "url": "https://github.com/dovahkiin-v/letterbox",
    "source": "github"
  },
  "distribution": {
    "packages": [
      {
        "registryType": "pypi",
        "identifier": "letterbox",
        "version": "1.2.2",
        "transport": "stdio",
        "environmentVariables": [
          {
            "name": "LETTERBOX_CHANNEL",
            "description": "Channel name to open. Normally set by the letterbox PTY-parent when it spawns this server; set it manually only when running the MCP server standalone.",
            "isRequired": true
          },
          {
            "name": "LETTERBOX_SENDER",
            "description": "This endpoint's identity on the channel — the name the peer agent sees on every message.",
            "isRequired": true
          },
          {
            "name": "LETTERBOX_INSTANCE_ID",
            "description": "Per-launch instance id, the watcher/own-write join key that stops an agent seeing its own messages as incoming. Must be unique per launch.",
            "isRequired": true
          }
        ]
      }
    ],
    "remotes": []
  },
  "dependencies": [],
  "installTargets": [
    "claude-code",
    "claude-desktop",
    "cursor",
    "vscode",
    "trae",
    "cherry-studio",
    "lingma",
    "windsurf",
    "cline",
    "workbuddy"
  ],
  "keywords": [],
  "provenance": {
    "origin": "official-mcp-registry",
    "originalId": "io.github.dovahkiin-v/letterbox",
    "originalUrl": "https://registry.modelcontextprotocol.io/v0.1/servers/io.github.dovahkiin-v%2Fletterbox/versions/latest",
    "isOfficial": true,
    "status": "active"
  }
}