"""Video Helper: Model Context Protocol (MCP) surface.
A thin adapter that exposes the FastAPI app from :mod:`video_helper.api` as
MCP tools, so any MCP-aware host (an agent runtime, an IDE integration, a
custom shell) can call video-helper's operations — validation, dimensions,
duration, format conversion, chunking, black-video/image-loop generation,
concat, overlay, audio mux/extraction, subtitle burn/conversion, frame
extraction, and dense optical flow — as first-class tools. Uses `fastapi-mcp`
(https://github.com/tadata-org/fastapi_mcp): one wrapper publishes the whole
existing HTTP surface, so the routes are never duplicated.
Install the extra to pull in ``fastapi-mcp``::
pip install "video-helper[mcp]"
Then run the server (HTTP API + MCP endpoint at ``/mcp``)::
video-helper-mcp # console entry point
python -m video_helper.mcp # equivalent
Author
------
Warith Harchaoui, Ph.D. — https://linkedin.com/in/warith-harchaoui/
"""
from __future__ import annotations
try:
from fastapi_mcp import FastApiMCP
except ImportError as exc: # pragma: no cover - exercised only without the extra
raise ImportError(
'The MCP surface needs the [mcp] extra: pip install "video-helper[mcp]"'
) from exc
# Reuse the exact same FastAPI app: MCP is a thin wrapper on top, no new routes.
from video_helper.api import app
# Publish the HTTP endpoints (validate / dimensions / duration / convert /
# chunk / black / image-loop / concat / overlay / extract-audio / mux-audio /
# burn-subs / srt2vtt / extract-frames / extract-flow) as MCP tools.
mcp = FastApiMCP(
app,
name="video-helper",
description=(
"Video Helper MCP tools: validate, inspect (dimensions/duration), "
"convert, chunk, and compose video — black-video/image-loop "
"generation, concat, overlay, audio mux/extraction, subtitle "
"burn/conversion, frame extraction, and dense optical flow — "
"entirely on the local machine."
),
)
# Newer fastapi-mcp splits mount() into transport-specific mount_http(); fall back to
# the legacy mount() so a range of fastapi-mcp versions keeps working.
if hasattr(mcp, "mount_http"):
mcp.mount_http()
else: # pragma: no cover - legacy fastapi-mcp
mcp.mount()
[docs]
def main() -> None:
"""Console entry point (``video-helper-mcp``): serve the API + MCP endpoint.
Boots the FastAPI app (now serving both the plain HTTP routes and the
``/mcp`` MCP endpoint) with uvicorn in a single worker. Local-first: binds
to loopback by default (override with ``VIDEO_HELPER_HOST`` /
``VIDEO_HELPER_PORT``).
"""
import os
import uvicorn
host = os.environ.get("VIDEO_HELPER_HOST", "127.0.0.1")
port = int(os.environ.get("VIDEO_HELPER_PORT", "8000"))
print(f"Video Helper API + MCP -> http://{host}:{port} (MCP at /mcp)")
uvicorn.run(app, host=host, port=port, workers=1)
if __name__ == "__main__": # pragma: no cover
main()