sagecoffee 0.2.0rc1

Python library and CLI for controlling Breville/Sage coffee machines

Sage Coffee Control Library

Python library and CLI for controlling Breville/Sage coffee machines via their cloud API.

Security Warning: This library handles authentication tokens that provide access to your coffee machine. Keep your tokens secure and never share them publicly. The refresh token in particular can be used to generate new access tokens indefinitely.

Features

• OAuth authentication against Breville/Sage Auth0
• Automatic token refresh when tokens expire
• WebSocket connection for real-time state updates
• REST API for sending commands (wake, sleep, etc.)
• Appliance discovery (no need to hard-code serial numbers)
• CLI tool (sagectl) for command-line control
• Clean async Python API for integration into other projects

Installation

# From source
git clone https://github.com/simonjgreen/sagecoffee.git
cd sagecoffee
pip install -e .

# With development dependencies
pip install -e ".[dev]"

Quick Start

1. Bootstrap Authentication

First, you need to authenticate with your Breville account to obtain a refresh token:

# Bootstrap will prompt for your password (never stored)
sagectl bootstrap --username [e-mail]

This stores your refresh token in ~/.config/sagecoffee/config.toml with secure permissions (0600).

2. List Your Appliances

sagectl appliances

Output:

┏━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━━━━┓
┃ Name                ┃ Model  ┃ Serial Number       ┃ Pairing Type ┃
┡━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━╇━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━━━━┩
│ Oracle Dual Boiler  │ BES995 │ nnnnnnnnnnnnnnnnn   │ wifi         │
└─────────────────────┴────────┴─────────────────────┴──────────────┘

3. Control Your Machine

# Wake up the machine
sagectl wake

# Put the machine to sleep
sagectl sleep

# Wake and wait until ready (with timeout)
sagectl wake --wait --timeout 300

4. Monitor State

# Stream state updates (press Ctrl+C to stop)
sagectl tail

# Get a single state snapshot
sagectl tail --once

# Output as JSON lines (for scripting)
sagectl tail --jsonl

# Show specific fields
sagectl tail --fields state,boiler

Environment Variables

All configuration can be provided via environment variables:

Variable	Description
SAGECOFFEE_CLIENT_ID	OAuth client ID (has default, rarely needed)
SAGECOFFEE_REFRESH_TOKEN	Refresh token (or use config file)
SAGECOFFEE_SERIAL	Appliance serial number (optional, auto-discovered)
SAGECOFFEE_MODEL	Appliance model (default: BES995)
SAGECOFFEE_APP	App identifier (default: sageCoffee)

Configuration File

The config file is stored at ~/.config/sagecoffee/config.toml:

refresh_token = "your_refresh_token"
serial = "nnnnnnnnnnnnnnn"
model = "BES995"
app = "sageCoffee"

Important: The config file contains sensitive tokens. It is created with restrictive permissions (0600). The CLI will warn you if permissions are too permissive.

Python Library Usage

Basic Usage

import asyncio
from sagecoffee import SageCoffeeClient

async def main():
    async with SageCoffeeClient(
        client_id="your_client_id",
        refresh_token="your_refresh_token",
    ) as client:
        # List appliances
        appliances = await client.list_appliances()
        print(f"Found {len(appliances)} appliances")
        
        # Wake up the machine
        await client.wake()
        
        # Stream state updates
        async for state in client.tail_state():
            print(f"State: {state.reported_state}")
            if state.reported_state == "ready":
                break

asyncio.run(main())

Using ConfigStore

from sagecoffee import SageCoffeeClient
from sagecoffee.store import ConfigStore

async def main():
    store = ConfigStore()
    async with SageCoffeeClient.from_config(store) as client:
        await client.wake()

Low-Level API Access

from sagecoffee.auth import AuthClient
from sagecoffee.http_api import BrevilleApiClient
from sagecoffee.ws_client import BrevilleWsClient

# Direct auth client usage
auth = AuthClient(client_id="...")
tokens = await auth.password_realm_login(username, password)
tokens = await auth.refresh(tokens.refresh_token)

# Direct HTTP API usage
api = BrevilleApiClient(get_id_token=lambda: tokens.id_token)
await api.wake("SERIAL123")

# Direct WebSocket usage
ws = BrevilleWsClient(get_id_token=lambda: tokens.id_token)
await ws.connect()
await ws.add_appliance("SERIAL123")
async for state in ws.listen_states():
    print(state.reported_state)

Token Refresh Logic

The library automatically handles token refresh:

1. Expiry Detection: Tokens are checked against their JWT exp claim, with a configurable skew (default 60 seconds before expiry).

2. Automatic Refresh: When a token is near expiry:

   • The TokenManager refreshes it using the stored refresh_token
   • An asyncio lock prevents concurrent refresh stampedes
   • The new refresh_token is persisted if it was rotated

3. 401 Handling: If an API call returns 401:

   • The token is refreshed
   • The request is retried once

4. WebSocket Reconnection: If the WebSocket disconnects:

   • Exponential backoff with jitter
   • Token refresh before reconnect if near expiry
   • Automatic re-registration of appliances

State Model

The DeviceState object provides convenient access to appliance state:

state.reported_state      # "asleep", "warming", "ready", etc.
state.desired_state       # What state was requested
state.boiler_temps        # List of BoilerState objects
state.grind_size          # Grinder setting
state.is_remote_wake_enabled  # Whether remote wake is allowed
state.timezone            # Configured timezone
state.raw_data            # Full raw state dict

Machine Configuration Defaults

Default settings discovered from a BES995 (Oracle Dual Boiler):

Setting	Default	Notes
Grind size	19	Range ~1-45
Brew temp	93.3°C	Boiler ID 1
Steam temp	131°C	Boiler ID 0
Volume	50	0-100
Display brightness	50	0-100
Work light brightness	100	Cup warmer light, 0-100
Auto-off time	20 min	Idle time before sleep
Temp unit	0	0=Celsius, 1=Fahrenheit
Theme	"dark"	Display theme
Timezone	"Europe/London"	Machine timezone
Wake schedule	20 6 * * 1-5	6:20 AM weekdays (cron format)

State Report Structure

The WebSocket returns state reports with this structure:

{
  "serialNumber": "nnnnnnnnnnnnnnnn",
  "messageType": "stateReport",
  "data": {
    "desired": { "REQUESTID": "None", "REQUEST": "None" },
    "reported": {
      "state": "ready",
      "cfg": {
        "default": {
          "work_light_brightness": 100,
          "brightness": 50,
          "theme": "dark",
          "vol": 50,
          "idle_time": 20,
          "wake_schedule": [{"cron": "20 6 * * 1-5", "on": true}],
          "temp_unit": 0,
          "timezone": "Europe/London"
        }
      },
      "grind": { "size_setting": 19 },
      "boiler": [
        { "id": 0, "temp_sp": 131, "cur_temp": 100 },
        { "id": 1, "temp_sp": 93.3, "cur_temp": 93.3 }
      ],
      "firmware": { "mcu0": "1.0.13", "appVersion": "1.1.20" }
    }
  }
}

CLI Commands Reference

Command	Description
sagectl bootstrap	Authenticate and store refresh token
sagectl refresh	Manually refresh tokens
sagectl appliances	List discovered appliances
sagectl tail	Stream state updates
sagectl wake	Wake up appliance
sagectl sleep	Put appliance to sleep
sagectl config	Show configuration
sagectl raw ws '...'	Send raw WebSocket message
sagectl raw http METHOD /path '...'	Send raw HTTP request

Common Options

• --serial, -s: Specify appliance serial number
• --debug: Enable debug logging (with redacted secrets)
• --wait, -w: Wait for state transition (wake/sleep)
• --timeout, -t: Timeout for wait operations
• --jsonl: Output as JSON lines
• --once: Exit after first state report

Exit Codes

Code	Meaning
0	Success
1	Authentication failure
2	Configuration missing
3	Network failure
4	Timeout waiting for state

Development

# Install dev dependencies
pip install -e ".[dev]"

# Run tests
pytest

# Run tests with coverage
pytest --cov=sagecoffee

# Type checking
mypy src/sagecoffee

# Linting
ruff check src/sagecoffee

# Formatting
black src/sagecoffee tests

Security Considerations

1. Never commit tokens: Add config.toml to your .gitignore
2. Use environment variables in CI: Don't store tokens in code
3. Restrictive file permissions: The library enforces 0600 on config files
4. Token redaction: Debug logs automatically redact sensitive values
5. No password storage: The bootstrap command never stores your password

Known Endpoints

The library uses these Breville/Sage cloud endpoints:

• OAuth: https://my.breville.com/oauth/token
• REST API: https://iot-api.breville.com/appliance/v1/...
• User API: https://iot-api.breville.com/user/v2/...
• WebSocket: wss://iot-api-ws.breville.com/applianceProxy

License

MIT License - see LICENSE file for details.

Disclaimer

This is an unofficial library. It is not affiliated with, endorsed by, or supported by Breville or Sage. Use at your own risk.