INNER CODE UNIT · Python

_lifespan

tiliondev/fortress · mcp/server.py:154

async def _lifespan(_server):
    """Pre-warm the stealth browser at server startup so the agent's FIRST tool
    call is a ~150ms warm hit, not a ~2.2s cold launch. Disable with
    TILION_MCP_PREWARM=0. Shuts the browser down cleanly on exit."""
    if _env("MCP_PREWARM", "1") != "0":
        try:
            await _t()
        except Exception:
            pass  # never let a pre-warm failure block the server
    try:
        yield
    finally:
        global _tilion
        if _tilion is not None:
            try:
                await _tilion.close()
            except Exception:
                pass

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