Snapmaker 2.0 Skill

Control and monitor Snapmaker 2.0 3D printers via their HTTP API.

Features

• Status monitoring - Real-time printer status (temperatures, progress, position)
• Job management - Send, start, pause, resume, and stop print jobs
• Safety features - Prevents interfering with active prints without confirmation
• Progress watching - Live monitoring of print progress
• Notification support - Detect print completion, filament issues, errors

Configuration

Create config.json in your workspace's snapmaker/ folder (e.g. ~/clawd/snapmaker/config.json). Start from config.json.example.

Config format:

{
  "ip": "192.168.0.32",
  "token": "your-token-here",
  "port": 8080
}

Finding your token: Open the Snapmaker Luban app, connect to your printer, and find the token in the connection settings. Copy it into your config.json.

Usage

Discovery

# Find Snapmaker printers on the local network (UDP broadcast, port 20054)
python3 scripts/snapmaker.py discover

# Probe a specific IP (useful across subnets)
python3 scripts/snapmaker.py discover --target 192.168.0.32

# JSON output
python3 scripts/snapmaker.py discover --json

Discovery uses the Snapmaker UDP broadcast protocol (no auth required). Falls back to HTTP probe using config if UDP gets no reply (e.g. different subnet).

Basic Commands

# Get current printer status
python3 scripts/snapmaker.py status

# Watch print progress (updates every 5 seconds)
python3 scripts/snapmaker.py watch

# Get status as JSON
python3 scripts/snapmaker.py status --json

Job Control

# Send a file (prepares but doesn't start)
python3 scripts/snapmaker.py send ~/prints/model.gcode

# Send and start immediately
python3 scripts/snapmaker.py send ~/prints/model.gcode --start --yes

# Pause current print
python3 scripts/snapmaker.py pause --yes

# Resume paused print
python3 scripts/snapmaker.py resume --yes

# Stop/cancel print (requires confirmation)
python3 scripts/snapmaker.py stop

Safety Flags

• --yes - Skip confirmation prompts (use with caution!)
• --force - Override safety checks (NOT RECOMMENDED)

All commands that modify state require confirmation unless --yes is provided.

API Endpoints

The skill uses these Snapmaker HTTP API v1 endpoints:

• POST /api/v1/connect - Establish connection
• GET /api/v1/status - Get printer status
• POST /api/v1/prepare_print - Upload file
• POST /api/v1/start_print - Start printing
• POST /api/v1/pause - Pause print
• POST /api/v1/resume - Resume print
• POST /api/v1/stop - Stop/cancel print
• GET /api/v1/print_file - Download last file

Status Fields

The status command returns:

• status - Overall state (IDLE, RUNNING, PAUSED)
• printStatus - Printing / Idle
• progress - 0.0 to 1.0
• fileName - Current/last file
• currentLine / totalLines - G-code progress
• elapsedTime / remainingTime - In seconds
• nozzleTemperature1 / nozzleTargetTemperature1
• heatedBedTemperature / heatedBedTargetTemperature
• x / y / z - Current position
• isFilamentOut - Filament runout detection
• isEnclosureDoorOpen - Door state

Notifications

To detect events:

# Watch for completion
python3 scripts/snapmaker.py watch

# Or poll status in a loop
while true; do
  python3 scripts/snapmaker.py status --json | jq -r '.printStatus'
  sleep 10
done

Event detection:

• Print complete - status == "IDLE" && progress >= 0.99
• Filament out - isFilamentOut == true
• Door opened - isEnclosureDoorOpen == true
• Error - Check status field for errors

Safety Features

1. Active print protection - Cannot send files while printing
2. Confirmation prompts - All destructive actions require confirmation
3. State validation - Commands check printer state before executing
4. Clear warnings - Stop command shows prominent warning

Examples

Check if printer is busy

python3 scripts/snapmaker.py status | grep -q "RUNNING" && echo "Busy" || echo "Available"

Get remaining time

python3 scripts/snapmaker.py status --json | jq -r '.remainingTime'

Monitor temperatures

python3 scripts/snapmaker.py status --json | jq '{nozzle: .nozzleTemperature1, bed: .heatedBedTemperature}'

Troubleshooting

"Machine is not connected yet" (401 error):

• The API requires calling /api/v1/connect first before any status queries
• Example: curl -X POST "http://192.168.0.32:8080/api/v1/connect?token=YOUR_TOKEN"
• The Python script handles this automatically on first request
• Connection establishes a session that persists until the printer is powered off
• If using raw curl commands, always call connect first

Connection refused:

• Verify printer IP: ping 192.168.0.32
• Check printer is powered on
• Ensure you're on the same network

Invalid token:

• Reconnect Luban to the printer (accept on touchscreen)
• Copy the new token from Luban's connection settings
• Update your config.json

Can't send file:

• Check if printer is busy: python3 scripts/snapmaker.py status
• Wait for current print to finish
• Use --force only if absolutely necessary

References

• Snapmaker Forum: Auto-start Guide
• Snapmaker Forum: API Documentation

Dependencies

• Python 3.6+
• requests library (install: pip3 install requests)

License

Part of OpenClaw skills collection.