CaseyRo/mac_shortcuts_mcp

mac_shortcuts_mcp

Minimal MCP server that exposes macOS Shortcuts execution to ChatGPT-compatible clients.

Requirements

• macOS host
• Python 3.12+ and uv for dependency management
• FastMCP (installed automatically via uv) for the streamlined MCP runner

Setup

uv sync

Updating after pulling changes

Run uv sync again whenever you git pull new commits. The command reads the project's pyproject.toml/uv.lock and makes sure the virtual environment matches exactly, installing new dependencies, updating existing ones, and removing anything that is no longer required. No additional cleanup steps are needed unless you intentionally want to clear your cached wheels (use uv cache prune) or recreate the environment from scratch.

Run

FastMCP CLI (recommended)

• STDIO: uv run fastmcp run src/mac_shortcuts_mcp/server.py --transport stdio
• Streamable HTTP/SSE (defaults to 0.0.0.0:8000):

  uv run fastmcp run src/mac_shortcuts_mcp/server.py \
    --transport streamable-http \
    --host 0.0.0.0 \
    --port 8000
  

  • Pass --transport http to serve JSON responses instead of SSE

Connecting from clients

Most MCP clients expect one of two transport styles. The FastMCP runner exposes both, using the following connection details:

• STDIO transport – launch the server with the stdio command above and configure the client to execute the exact command. The client should read and write JSON-RPC frames over the spawned process' stdin/stdout streams.
• HTTP / SSE transport – start the server with the HTTP example and point the client at http://$HOST:$PORT/mcp (for JSON responses use the same path over HTTPS/HTTP). The SSE variant also uses the /mcp mount for the stream.

Tool payload

Run the MCP client of choice and provide the client with the following payload:

{
  "shortcutName": "Show Content",
  "textInput": "testing output",
  "timeoutSeconds": 30
}

Providing textInput pipes the supplied text to the shortcut's standard input, mirroring `echo "value" | shortcuts run "Shortcut Name"`.

Secure HTTP hosting options

The FastMCP runner currently binds without TLS and leaves DNS-rebinding protection disabled. For HTTPS termination or to enforce an allowed_hosts/allowed_origins policy, invoke the Typer-based CLI instead:

uv run python -m mac_shortcuts_mcp http \
  --host 0.0.0.0 \
  --port 8443 \
  --allowed-host example.com \
  --allowed-origin https://example.com \
  --certfile /path/to/fullchain.pem \
  --keyfile /path/to/privkey.pem

• Omit --certfile/--keyfile to serve HTTP only, or change --host to 127.0.0.1 when terminating TLS via a reverse proxy.
• Provide multiple --allowed-host / --allowed-origin flags as needed to re-enable FastMCP's DNS-rebinding protection.