# chuk-motion/src/chuk_motion/components/overlays/LowerThird/tool.py
"""LowerThird MCP tool."""
import asyncio
from chuk_motion.models import ErrorResponse, OverlayComponentResponse
def register_tool(mcp, project_manager):
"""Register the LowerThird tool with the MCP server."""
@mcp.tool
async def remotion_add_lower_third(
name: str,
title: str | None = None,
variant: str | None = None,
position: str | None = None,
duration: float = 5.0,
) -> str:
"""
Add LowerThird to the composition.
Name plate overlay with title and subtitle (like TV graphics)
Args:
name: Person's name to display
title: Optional title/role to display
variant: Style variant
position: Position on screen
duration: Duration in seconds (default: 5.0)
Returns:
JSON with component info
"""
def _add():
builder = project_manager.current_timeline
if not builder:
return ErrorResponse(
error="No active project. Create a project first."
).model_dump_json()
try:
start_time = builder.get_total_duration_seconds()
builder.add_lower_third(
name=name,
start_time=start_time,
title=title,
variant=variant,
position=position,
duration=duration,
)
return OverlayComponentResponse(
component="LowerThird",
start_time=start_time,
duration=duration,
).model_dump_json()
except Exception as e:
return ErrorResponse(error=str(e)).model_dump_json()
return await asyncio.get_event_loop().run_in_executor(None, _add)
