Bambu Lab Local Control

Control Bambu Lab 3D printers locally via MQTT (no cloud). Supports A1, A1 Mini, P1P, P1S, X1C.

Security Scan

The skill's code, instructions, and requirements are coherent with its stated purpose (local MQTT control of Bambu Lab printers); no indicators of hidden exfiltration or unrelated privileges were found, though there are a few small security/operational notes to consider.

Purpose & Capability

Name/description match the implementation: bambu.py uses paho-mqtt to connect to a local printer IP over MQTT/TLS and publish/subscribe on device/{serial} topics. Declared binary (python3) and the required inputs (printer_ip, access_code, serial) are appropriate for the described functionality.

Instruction Scope

SKILL.md stays within the purpose (create venv, install paho-mqtt, create config.json with printer info, run the script). Two operational/security notes: the Python code disables TLS certificate verification (tls_set with CERT_NONE and tls_insecure_set(True)), which is likely to accommodate a self-signed cert but weakens MITM protections; and the instructions store the printer access_code in a plain config.json inside the skill folder (sensitive data at rest). The script does not read other system files or call external endpoints beyond the printer IP.

Install Mechanism

No install spec is provided (instruction-only). The SKILL.md asks the user to pip install paho-mqtt into a venv — a low-risk, expected step for a Python MQTT client.

Credentials

The registry metadata declared no required config paths, but the runtime code requires a config.json placed alongside bambu.py (CONFIG_PATH). This mismatch is an informational inconsistency. The sensitive value requested (access_code) is proportional to the skill's purpose, but users should note it will be stored in plaintext by default in the skill folder unless they change that.

Persistence & Privilege

The skill does not request always:true and does not modify other skills or system-wide settings. It runs when invoked and does not request elevated/persistent platform privileges.

Assessment

This skill looks like what it claims: a local MQTT controller for Bambu printers. Before installing, consider: 1) Protect the config.json (it contains your printer access_code). Move it to a secure location or restrict file permissions so others on the machine cannot read it. 2) The code disables TLS certificate verification (tls_insecure_set(True)); that reduces MITM protection — acceptable on a trusted local LAN with self-signed certs, but be cautious on untrusted networks. 3) Verify the printer IP is local and that you trust devices on that network; anyone with the access_code can control the printer. 4) Because the skill stores credentials in a file inside the skill folder, avoid running it on multi-user systems without securing the file. 5) If you want stronger security, consider editing bambu.py to enforce certificate checks or use a more secure storage mechanism for the access_code (environment variables, OS keyring) and update SKILL.md accordingly.

Bambu Local - 3D Printer Control

Control Bambu Lab printers locally via MQTT without cloud dependency.

Setup

1. Create virtual environment:

python3 -m venv ~/bambu-env
source ~/bambu-env/bin/activate
pip install paho-mqtt

2. Create config.json in skill folder:

{
  "printer_ip": "192.168.x.x",
  "access_code": "xxxxxxxx",
  "serial": "xxxxxxxxxxxx",
  "printer_name": "MyPrinter"
}

Get these from your printer: Settings → LAN Only Mode (access code) and Settings → Device (serial).

Commands

Status

run ~/clawd/skills/bambu-local/bambu status

Light

run ~/clawd/skills/bambu-local/bambu light on
run ~/clawd/skills/bambu-local/bambu light off

Print Control

run ~/clawd/skills/bambu-local/bambu print pause
run ~/clawd/skills/bambu-local/bambu print resume
run ~/clawd/skills/bambu-local/bambu print stop

Speed (1=Silent, 2=Standard, 3=Sport, 4=Ludicrous)

run ~/clawd/skills/bambu-local/bambu speed 2

Temperature

run ~/clawd/skills/bambu-local/bambu temp --bed 60
run ~/clawd/skills/bambu-local/bambu temp --nozzle 200

G-code

run ~/clawd/skills/bambu-local/bambu gcode "G28"

Supported Printers

• Bambu Lab A1 / A1 Mini
• Bambu Lab P1P / P1S
• Bambu Lab X1 / X1C