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mcp/harbor
VS Code

postbag for VS Code

io.github.parasxos/postbag

Local Claude Code and Codex sessions on one machine exchange letters through native inputs.

client:VS Code transport:stdio runtime:pypi

Install postbag in VS Code

.vscode/mcp.json 

{
  "inputs": [
    {
      "type": "promptString",
      "id": "postbag-codex",
      "description": "POSTBAG_CODEX",
      "password": true
    }
  ],
  "servers": {
    "postbag": {
      "type": "stdio",
      "command": "uvx",
      "args": [
        "postbag"
      ],
      "env": {
        "POSTBAG_CODEX": "${input:postbag-codex}"
      }
    }
  }
}

VS Code prompts for each input the first time the server starts, so no secret is written to the file. VS Code docs

postbag in other clients

postbag MCP server