add_master_fx
Add FX plugins to the master track in REAPER DAW for final mix processing and mastering workflows.
Instructions
Add an FX plugin to the master track.
Input Schema
TableJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| fx_name | Yes |
Implementation Reference
- src/reaper_mcp/mastering_tools.py:20-32 (handler)The add_master_fx tool implementation. Decorated with @mcp.tool(), this function adds an FX plugin to the master track by name. It retrieves the project via get_project(), accesses the master track, adds the FX, and returns success status with FX metadata (index, name, n_params) or an error if the plugin is not found.
@mcp.tool() def add_master_fx(fx_name: str) -> dict: """Add an FX plugin to the master track.""" try: project = get_project() master = project.master_track fx_index = master.add_fx(fx_name) if fx_index < 0: return {"success": False, "error": f"Plugin not found: '{fx_name}'"} fx = master.fxs[fx_index] return {"success": True, "fx_index": fx_index, "name": fx.name, "n_params": fx.n_params} except Exception as e: return {"success": False, "error": str(e)} - src/reaper_mcp/mastering_tools.py:20-20 (registration)MCP tool registration via decorator. The @mcp.tool() decorator registers add_master_fx as an available tool in the MCP server, exposing it to clients.
@mcp.tool()