"""
Audio Helper: Model Context Protocol (MCP) surface.
A thin adapter that exposes the FastAPI app from :mod:`audio_helper.api` as MCP
tools, so any MCP-aware host (an agent runtime, an IDE integration, a custom
shell) can call the audio-helper actions — convert, chunk, silence, concat,
room tone, split, Demucs source separation, duration, MFCC resemblance — 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 "audio-helper[mcp]"
Then run the server (HTTP API + MCP endpoint at ``/mcp``)::
audio-helper-mcp # console entry point
python -m audio_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 "audio-helper[mcp]"'
) from exc
# Reuse the exact same FastAPI app: MCP is a thin wrapper on top, no new routes.
from audio_helper.api import app
# Publish the HTTP endpoints (convert / chunk / silence / concat / roomtone /
# split / separate / duration / resemblance) as MCP tools.
mcp = FastApiMCP(
app,
name="audio-helper",
description=(
"audio-helper MCP tools: load, convert, chunk, concatenate, split, "
"generate silence, mix room tone, run Demucs source separation, "
"measure duration, and score MFCC-based resemblance between audio "
"files — 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 (``audio-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 ``AUDIO_HELPER_HOST`` /
``AUDIO_HELPER_PORT``).
"""
import os
import uvicorn
host = os.environ.get("AUDIO_HELPER_HOST", "127.0.0.1")
port = int(os.environ.get("AUDIO_HELPER_PORT", "8001"))
print(f"Audio 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()