diff --git a/app/api.py b/app/api.py
new file mode 100644
index 0000000..60dbade
--- /dev/null
+++ b/app/api.py
@@ -0,0 +1,258 @@
+import logging
+from contextlib import asynccontextmanager
+from typing import Literal
+
+from fastapi import FastAPI, HTTPException, Path
+
+from app.my_dataclasses import (
+    TION_MAC,
+    MIN_FAN_SPEED,
+    MAX_FAN_SPEED,
+    MIN_TARGET_TEMP,
+    MAX_TARGET_TEMP,
+    AIR_MODE_OUTSIDE,
+    AIR_MODE_RECIRCULATION,
+)
+
+from app.tion import (
+    TionController,
+    TionService,
+)
+
+
+def configure_logging() -> None:
+    noisy_loggers = (
+        "asyncio",
+        "bleak",
+        "bleak.backends",
+        "bleak.backends.winrt",
+        "bleak.backends.winrt.client",
+        "tion_btle",
+        "tion_btle.tion",
+        "tion_btle.s4",
+        "tion_btle.light_family",
+    )
+
+    for logger_name in noisy_loggers:
+        logging.getLogger(logger_name).setLevel(logging.WARNING)
+
+configure_logging()
+
+# ----------------------------------------------------------------------
+# Tion
+# ----------------------------------------------------------------------
+
+controller = TionController(TION_MAC)
+
+service = TionService(
+    controller,
+    poll_interval=5,
+)
+
+# ----------------------------------------------------------------------
+# Application lifecycle
+# ----------------------------------------------------------------------
+
+@asynccontextmanager
+async def lifespan(app: FastAPI):
+    await service.start()
+
+    try:
+        yield
+    finally:
+        await service.stop()
+
+
+# ----------------------------------------------------------------------
+# FastAPI
+# ----------------------------------------------------------------------
+
+app = FastAPI(
+    title="Tion Controller",
+    version="0.1.0",
+    lifespan=lifespan,
+)
+
+
+# ----------------------------------------------------------------------
+# Helpers
+# ----------------------------------------------------------------------
+
+def get_status() -> dict:
+    """
+    Получить текущее состояние сервиса.
+
+    Bluetooth-запрос здесь не выполняется.
+    """
+
+    state = service.state
+
+    return {
+        "online": service.online,
+        "running": service.running,
+
+        "last_seen": (
+            service.last_seen.isoformat()
+            if service.last_seen is not None
+            else None
+        ),
+
+        "last_error": service.last_error,
+
+        "tion": (
+            state.to_dict()
+            if state is not None
+            else None
+        ),
+    }
+
+
+async def execute_command(operation) -> dict:
+    """
+    Выполнить команду Tion и вернуть обновлённый status.
+    """
+
+    try:
+        await service.execute(operation)
+
+    except Exception as exc:
+        raise HTTPException(
+            status_code=503,
+            detail={
+                "message": "Tion unavailable",
+                "error": f"{type(exc).__name__}: {exc}",
+            },
+        ) from exc
+
+    return get_status()
+
+
+# ----------------------------------------------------------------------
+# Status
+# ----------------------------------------------------------------------
+
+@app.get("/api/status")
+async def status():
+    return get_status()
+
+
+# ----------------------------------------------------------------------
+# Power
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/power/{value}")
+async def set_power(
+    value: Literal["on", "off"],
+):
+    if value == "on":
+        return await execute_command(
+            lambda tion: tion.power_on()
+        )
+
+    return await execute_command(
+        lambda tion: tion.power_off()
+    )
+
+
+# ----------------------------------------------------------------------
+# Fan speed
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/speed/{speed}")
+async def set_speed(
+    speed: int = Path(
+        ge=MIN_FAN_SPEED,
+        le=MAX_FAN_SPEED,
+    ),
+):
+    return await execute_command(
+        lambda tion: tion.set_speed(speed)
+    )
+
+
+# ----------------------------------------------------------------------
+# Heater
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/heater/{value}")
+async def set_heater(
+    value: Literal["on", "off"],
+):
+    if value == "on":
+        return await execute_command(
+            lambda tion: tion.heater_on()
+        )
+
+    return await execute_command(
+        lambda tion: tion.heater_off()
+    )
+
+
+# ----------------------------------------------------------------------
+# Target temperature
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/temperature/{temperature}")
+async def set_temperature(
+    temperature: int = Path(
+        ge=MIN_TARGET_TEMP,
+        le=MAX_TARGET_TEMP,
+    ),
+):
+    return await execute_command(
+        lambda tion: tion.set_target_temperature(
+            temperature
+        )
+    )
+
+
+# ----------------------------------------------------------------------
+# Air mode
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/mode/{mode}")
+async def set_air_mode(
+    mode: Literal[
+        AIR_MODE_OUTSIDE,
+        AIR_MODE_RECIRCULATION,
+    ],
+):
+    return await execute_command(
+        lambda tion: tion.set_air_mode(mode)
+    )
+
+
+# ----------------------------------------------------------------------
+# Sound
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/sound/{value}")
+async def set_sound(
+    value: Literal["on", "off"],
+):
+    if value == "on":
+        return await execute_command(
+            lambda tion: tion.sound_on()
+        )
+
+    return await execute_command(
+        lambda tion: tion.sound_off()
+    )
+
+
+# ----------------------------------------------------------------------
+# Light
+# ----------------------------------------------------------------------
+
+@app.post("/api/tion/light/{value}")
+async def set_light(
+    value: Literal["on", "off"],
+):
+    if value == "on":
+        return await execute_command(
+            lambda tion: tion.light_on()
+        )
+
+    return await execute_command(
+        lambda tion: tion.light_off()
+    )
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
index a83753b..1e9b3a8 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1 +1,3 @@
-tion-btle==3.3.6
\ No newline at end of file
+tion-btle==3.3.6
+fastapi
+uvicorn[standard]
\ No newline at end of file