app.py

from __future__ import annotations

import glob
import os
import subprocess
import sys
from pathlib import Path

BUCKET_MOUNT = Path(os.environ.get("FAST_AGENT_BUCKET_MOUNT", "/data"))
CARD_DIR = BUCKET_MOUNT / "agent-cards"


def latest_wheel() -> str:
    wheels = sorted(
        glob.glob(str(BUCKET_MOUNT / "wheels" / "fast_agent_mcp-*.whl")),
        key=os.path.getmtime,
        reverse=True,
    )
    if not wheels:
        raise RuntimeError(f"No fast-agent-mcp wheel found under {BUCKET_MOUNT / 'wheels'}")
    return wheels[0]


def main() -> None:
    wheel = latest_wheel()
    subprocess.check_call(
        [sys.executable, "-m", "pip", "install", "--no-deps", "--force-reinstall", wheel]
    )

    os.environ.setdefault("FAST_AGENT_SERVE_OAUTH", "huggingface")
    os.environ.setdefault("FAST_AGENT_OAUTH_SCOPES", "access")
    os.environ.setdefault("PYTHONUNBUFFERED", "1")

    cmd = [
        sys.executable,
        "-m",
        "fast_agent.cli.__main__",
        "serve",
        "a2a",
        "--name",
        os.environ.get("FAST_AGENT_A2A_NAME", "a2a-demo"),
        "--host",
        "0.0.0.0",
        "--port",
        os.environ.get("PORT", "7860"),
        "--instance-scope",
        os.environ.get("FAST_AGENT_A2A_INSTANCE_SCOPE", "connection"),
        "--agent-cards",
        str(CARD_DIR),
        "--model",
        os.environ.get("FAST_AGENT_MODEL", "kimi"),
    ]
    os.execv(sys.executable, cmd)


if __name__ == "__main__":
    main()