en Configuration

Configuration Reference

SelenaCore uses a dual-source configuration system: environment variables (via .env and shell environment) and a YAML file (core.yaml). This document covers every available setting, its type, default value, and purpose.

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Configuration Sources and Precedence

Settings are resolved in the following order, from highest to lowest priority:

1. Environment variables — set in the shell or container runtime
2. .env file — loaded automatically by Pydantic BaseSettings
3. core.yaml — runtime-changeable settings loaded from disk
4. Defaults — hardcoded in the CoreSettings class

This means an environment variable always overrides the same setting defined in .env or core.yaml.

File Locations

File	Default Path	Override
.env	Project root (.env)	N/A
core.yaml	/opt/selena-core/config/core.yaml	Set SELENA_CONFIG env var to an alternate path
logging.yaml	/opt/selena-core/config/logging.yaml	N/A

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CoreSettings Reference (.env / Environment Variables)

All settings below are defined in core/config.py as a Pydantic BaseSettings model. They can be set as environment variables or placed in the .env file.

Platform

Variable	Type	Default	Description
PLATFORM_API_URL	str	https://selenehome.tech/api/v1	URL of the SelenaCore cloud platform API.
PLATFORM_DEVICE_HASH	str	""	Unique device identifier registered with the platform.
MOCK_PLATFORM	bool	False	When True, all platform API calls return stubbed responses. Useful for offline development.

Core

Variable	Type	Default	Description
CORE_PORT	int	80	TCP port the core API server listens on.
CORE_DATA_DIR	str	/var/lib/selena	Directory for persistent data (database, module state).
CORE_SECURE_DIR	str	/secure	Directory for secrets and sensitive files (tokens, keys).
CORE_LOG_LEVEL	str	INFO	Logging verbosity. One of DEBUG, INFO, WARNING, ERROR, CRITICAL.
DEBUG	bool	False	Enables debug mode across the application (verbose output, auto-reload).

UI

Variable	Type	Default	Description
UI_HTTPS	bool	True	Whether HTTPS TLS proxy should be started on port 443.

Note: The UI is served by the same process as the Core API on port 80. There is no separate UI_PORT — it was removed when the UI proxy server was merged into Core.

Agent

Variable	Type	Default	Description
AGENT_CHECK_INTERVAL	int	30	Interval in seconds between module health checks.
AGENT_MAX_RESTORE_ATTEMPTS	int	3	Maximum number of automatic restart attempts for a failed module before giving up.

Docker

Variable	Type	Default	Description
DOCKER_SOCKET	str	/var/run/docker.sock	Path to the Docker daemon socket.
MODULE_CONTAINER_IMAGE	str	smarthome-modules:latest	Default Docker image used when launching module containers.
SANDBOX_IMAGE	str	smarthome-sandbox:latest	Docker image used for sandboxed code execution.

OAuth

Variable	Type	Default	Description
GOOGLE_CLIENT_ID	str	""	OAuth 2.0 client ID for Google integration (Assistant, Calendar).
GOOGLE_CLIENT_SECRET	str	""	OAuth 2.0 client secret for Google integration.
TUYA_CLIENT_ID	str	""	Tuya IoT platform client ID.
TUYA_CLIENT_SECRET	str	""	Tuya IoT platform client secret.

Tailscale

Variable	Type	Default	Description
TAILSCALE_AUTH_KEY	str	""	Pre-authentication key for automatic Tailscale VPN enrollment.

Derived Properties

These are computed at runtime and cannot be set directly:

Property	Value	Description
db_url	sqlite+aiosqlite:////{core_data_dir}/selena.db	SQLAlchemy async connection string for the SQLite database.
secure_dir_path	Path(core_secure_dir)	pathlib.Path object for the secure directory.

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core.yaml Reference

The YAML configuration file is intended for settings that may be changed at runtime through the UI or setup wizard. Copy config/core.yaml.example to /opt/selena-core/config/core.yaml as a starting point.

core

core:
  host: "0.0.0.0"
  port: 80
  data_dir: "/var/lib/selena"
  secure_dir: "/secure"
  log_level: "INFO"
  debug: false

Key	Type	Default	Description
host	str	0.0.0.0	Bind address for the core API server.
port	int	80	TCP port for the core API server.
data_dir	str	/var/lib/selena	Persistent data directory.
secure_dir	str	/secure	Secure storage directory for secrets.
log_level	str	INFO	Logging level (DEBUG, INFO, WARNING, ERROR, CRITICAL).
debug	bool	false	Enable debug mode.

ui

ui:
  host: "0.0.0.0"
  port: 80
  https: true

Key	Type	Default	Description
host	str	0.0.0.0	Bind address for the web UI server.
port	int	80	TCP port for the web UI.
https	bool	true	Serve the UI over HTTPS.

agent

agent:
  check_interval_sec: 30
  max_restore_attempts: 3

Key	Type	Default	Description
check_interval_sec	int	30	Seconds between module health checks.
max_restore_attempts	int	3	Maximum automatic restart attempts for a failed module.

modules

modules:
  container_image: "smarthome-modules:latest"
  sandbox_image: "smarthome-sandbox:latest"

Key	Type	Default	Description
container_image	str	smarthome-modules:latest	Docker image for module containers.
sandbox_image	str	smarthome-sandbox:latest	Docker image for sandboxed execution.

voice

voice:
  wake_word_sensitivity: 0.5
  stt_model: "vosk-model-small-uk"
  stt_silence_timeout: 1.0
  rephrase_enabled: false
  output_volume: 50               # Master TTS playback volume (0-150%)
  input_gain: 100                 # Microphone gain (0-150%)
  audio_force_input: null         # ALSA capture device (auto-detect if null)
  audio_force_output: null        # ALSA playback device (auto-detect if null)
  privacy_gpio_pin: null          # GPIO pin for physical mic kill switch
  tts:
    primary:
      voice: "uk_UA-ukrainian_tts-medium"
      lang: "uk"
      cuda: true
      settings:
        length_scale: 0.65
        noise_scale: 0.667
        noise_w_scale: 0.8
        volume: 0.7
        speaker: 1
    fallback:
      voice: "en_US-ryan-low"
      lang: "en"
      cuda: false
      settings:
        length_scale: 0.75
        noise_scale: 0.667
        noise_w_scale: 0.8
        volume: 0.55
        speaker: 0

Key	Type	Default	Description
wake_word_sensitivity	float	0.5	Sensitivity threshold for wake word detection (0.0-1.0).
stt_model	str	vosk-model-small-uk	Vosk STT model name (downloaded from alphacephei.com/vosk/models).
stt_silence_timeout	float	1.0	Seconds of silence before processing command (0.5-5.0).
rephrase_enabled	bool	false	LLM rephrase for module responses. Adds latency.
output_volume	int	100	Master TTS output volume 0-150%. Software PCM scaling.
input_gain	int	100	Microphone gain 0-150%. Applied via amixer.
audio_force_input	str|null	null	ALSA capture device (e.g., plughw:0,0).
audio_force_output	str|null	null	ALSA playback device (e.g., plughw:1,3).
privacy_gpio_pin	int|null	null	GPIO pin for physical mic kill switch.
tts.primary.voice	str	uk_UA-ukrainian_tts-medium	Primary Piper TTS voice.
tts.primary.lang	str	uk	Primary voice language code.
tts.primary.cuda	bool	false	GPU acceleration for primary voice.
tts.primary.settings.*	dict	see above	Per-voice synthesis parameters.
tts.fallback.voice	str	en_US-ryan-low	Fallback (English) voice.
tts.fallback.lang	str	en	Fallback voice language.
tts.fallback.settings.*	dict	see above	Per-voice synthesis parameters.

TTS settings per voice:

Setting	Range	Default	Description
length_scale	0.3-2.0	1.0	Speech speed (lower = faster).
noise_scale	0.0-1.0	0.667	Intonation variability.
noise_w_scale	0.0-1.0	0.8	Phoneme width variability.
volume	0.1-3.0	1.0	Synthesis volume (Piper native).
speaker	0-N	0	Speaker ID for multi-speaker models.

Environment variables (voice/TTS/LLM)

Variable	Default	Description
PIPER_MODELS_DIR	/var/lib/selena/models/piper	Piper voice model directory
PIPER_VOICE	uk_UA-ukrainian_tts-medium	Default TTS voice
PIPER_GPU_URL	http://localhost:5100	Native Piper server URL
PIPER_DEVICE	auto	Piper device mode: auto, cpu, gpu

llm

llm:
  enabled: true
  provider: "ollama"
  ollama_url: "http://localhost:11434"
  default_model: "phi-3-mini"
  min_ram_gb: 5
  timeout_sec: 30

Key	Type	Default	Description
enabled	bool	true	Enable the local LLM subsystem.
provider	str	ollama	LLM inference provider. Currently supported: ollama.
ollama_url	str	http://localhost:11434	Base URL of the Ollama API.
default_model	str	phi-3-mini	Default model for intent classification and conversational responses.
min_ram_gb	int	5	Minimum available RAM (in GB) required before loading a model.
timeout_sec	int	30	Request timeout in seconds for LLM inference calls.

platform

platform:
  api_url: "https://selenehome.tech/api/v1"
  device_hash: ""
  heartbeat_interval_sec: 60
  mock: false

Key	Type	Default	Description
api_url	str	https://selenehome.tech/api/v1	Cloud platform API endpoint.
device_hash	str	""	Device identifier for platform registration.
heartbeat_interval_sec	int	60	Interval in seconds between heartbeat pings to the platform.
mock	bool	false	Stub all platform API responses for offline development.

wizard

wizard:
  completed: false
  current_step: null

Key	Type	Default	Description
completed	bool	false	Whether the initial setup wizard has been completed.
current_step	str or null	null	The last active wizard step, used to resume an interrupted setup.

system

system:
  device_name: "Selena Hub"
  language: "uk"
  timezone: "Europe/Kyiv"

Key	Type	Default	Description
device_name	str	Selena Hub	Human-readable name for this hub instance.
language	str	uk	System language code (ISO 639-1).
timezone	str	Europe/Kyiv	IANA timezone identifier for scheduling and display.

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Additional .env Variables

These variables are not part of CoreSettings but are used by supporting services and development tooling.

Variable	Description
GEMINI_API_KEY	API key for Google Gemini, used as a cloud LLM fallback when local inference is unavailable.
APP_URL	Base URL of the core API (e.g., http://localhost). Used by external services that need to call back into SelenaCore.
HOST_UID	Host user ID, passed into containers for PulseAudio socket permissions.
OLLAMA_MODELS_DIR	Override directory where Ollama stores downloaded models.
DEV_MODULE_TOKEN	A static bearer token accepted during development for module API testing. Do not use in production.

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Logging Configuration

Logging is configured via /opt/selena-core/config/logging.yaml, which is loaded using Python's logging.config.dictConfig().

If the file is missing or fails to load, SelenaCore falls back to Python's basicConfig with the level taken from the CORE_LOG_LEVEL environment variable (default INFO).

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Runtime Configuration Updates

Settings stored in core.yaml can be modified at runtime through:

• Setup wizard — writes initial configuration during first-run setup.
• UI settings panel — allows changing voice, LLM, and system settings without a restart.

These updates are handled by the core/config_writer.py module, which reads the current YAML, applies changes, and writes the file back atomically.

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Quick Start Example

1. Copy the example files:

   cp config/core.yaml.example /opt/selena-core/config/core.yaml
   cp .env.example .env

2. Edit .env with credentials and secrets:

   PLATFORM_DEVICE_HASH=your-device-hash
   GOOGLE_CLIENT_ID=your-google-client-id
   GOOGLE_CLIENT_SECRET=your-google-client-secret
   TAILSCALE_AUTH_KEY=tskey-auth-xxxxx

3. Adjust core.yaml for your environment (language, timezone, voice model).

4. Start SelenaCore. The setup wizard will guide you through remaining configuration if wizard.completed is false.