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Kiln
by
codeofaxel
· GitHub ↗
· v0.5.0
· MIT-0
689
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Install in OpenClaw
/install kiln
Description
Control 3D printers with AI agents — 430 MCP tools, 114 CLI commands, text/sketch-to-3D generation, model marketplace search, multi-printer fleet support, sa...
README (SKILL.md)
Kiln
AI agent control of 3D printers — \x3C!-- KILN_MCP_CAPABILITY_COUNT:OLD --> 763 MCP capabilities + \x3C!-- KILN_CLI_COUNT:OLD --> 215 CLI commands.
What it does
Kiln gives AI agents (Claude, GPT, OpenClaw, custom) safe, direct control of 3D printers through the Model Context Protocol. One install and your agent can search model marketplaces, generate designs from text/sketches, slice STL/3MF files, queue prints, monitor progress with camera snapshots, manage multi-printer fleets, and estimate costs — all from a single conversation.
Supported printers
- Bambu Lab — A1, A1 Mini, P1S, P1P, X1C (MQTT + FTP)
- OctoPrint — Any printer running OctoPrint
- Moonraker/Klipper — Voron, Ender, etc.
- Creality — K1/K2/Hi/Ender V3 KE-class printers when local Moonraker is reachable; older Marlin models via OctoPrint or serial
- Prusa Link — MK4, Mini, XL
- Elegoo — Saturn, Mars, Centauri Carbon (SDCP V2 + V3)
Install
pip install kiln3d
Or with pipx:
pipx install kiln3d
Key capabilities
- \x3C!-- KILN_MCP_TOOL_COUNT:OLD --> 756 MCP tools for full printer lifecycle control
- \x3C!-- KILN_CLI_COUNT:OLD --> 215 CLI commands for human and agent use
- Model search across MyMiniFactory, Cults3D, Thangs, GrabCAD, Etsy
- Text/sketch-to-3D generation with multiple provider backends
- Auto-slicing via PrusaSlicer or OrcaSlicer
- Fleet management with multi-site, multi-printer support
- Safety enforcement — pre-flight checks, G-code validation, temp limits, confirmation gates
- Print monitoring with camera snapshots and failure detection
- Cost estimation from G-code and Bambu 3MF metadata
- Material intelligence — catalog, compatibility, substitution recommendations
Links
Usage Guidance
This skill is largely coherent with its stated purpose (local 3D printer control), but take precautions before installing or providing credentials: 1) Inspect the GitHub repo referenced by the install spec (https://github.com/codeofaxel/Kiln.git) — verify maintainer identity and recent commits or releases. 2) Review included files inside the bundle for hardcoded secrets or PII (e.g., the Bambu doc contains a specific IP and access code); remove or redact such files before running. 3) Only provide KILN_PRINTER_HOST/KILN_PRINTER_API_KEY for printers you control on a trusted local network; avoid exporting other optional provider/LLM API keys unless needed. 4) If you must test, run in an isolated environment (VM or container) and monitor outbound network calls to ensure it doesn't contact unexpected endpoints. 5) If you need higher assurance, request the upstream project's official release (signed release or organization-owned repo) or a minimal runtime-only package with docs stripped.
Capability Analysis
Type: OpenClaw Skill
Name: kiln
Version: 0.5.0
The Kiln skill bundle is a highly sophisticated and professional-grade infrastructure for controlling 3D printers and industrial fabrication equipment (CNC, Laser, Concrete) via AI agents. The code (found in server_full.py, concrete_http.py, and various adapters) implements robust safety models, including mandatory preflight checks, rate limiting, and autonomy tiers to prevent hardware damage. While the bundle contains internal project documentation and legal drafts regarding an intellectual property conflict (ATTORNEY_BRIEFING_DRAFT.md), there is no evidence of malicious intent, data exfiltration, or unauthorized remote execution. The system is clearly aligned with its stated purpose of providing a standardized MCP/CLI interface for physical manufacturing.
Capability Assessment
Purpose & Capability
Name, description, required binaries (kiln, prusaslicer/orcaslicer) and primary env vars (KILN_PRINTER_HOST, KILN_PRINTER_API_KEY) match the stated purpose of controlling local 3D printers and invoking fulfillment providers. The optional fulfillment/LLM provider env vars are consistent with the documented features (outsourced manufacturing, text→3D providers).
Instruction Scope
The SKILL.md runtime instructions stay within the printing/orchestration domain (CLI/MCP commands, preflight checks, upload/print flows). However, the shipped file set includes many unrelated documents (legal drafts, conflict responses) and operational notes that contain sensitive or identifying information (for example, a Bambu adapter doc contains a specific local IP, access code, and serial for a named individual's printer). Those files are not required for runtime and their inclusion is unnecessary and risky—someone installing this skill is getting extraneous confidential/internal material baked into the bundle.
Install Mechanism
Install spec uses a 'uv' package pointing to a GitHub repo (https://github.com/codeofaxel/Kiln.git, subdirectory 'kiln'). GitHub is a common source, but pulling and extracting code from a specific user repo (rather than a vetted release or organization-owned repo) increases supply-chain risk. The manifest already includes source files, so confirm whether install is actually needed. No URL shorteners or personal IPs observed in the install spec.
Credentials
Required env vars are limited to KILN_PRINTER_HOST and KILN_PRINTER_API_KEY (appropriate for controlling a printer). The many optional env vars for fulfillment and generation providers are explainable by the skill's features. Still: the SKILL auto-discovers providers from env vars, so do not populate optional provider/LLM keys unless you trust the install source and need those integrations.
Persistence & Privilege
The skill saves config to ~/.kiln/config.yaml and to local SQLite as described—this is expected for a local-first print orchestration tool. always is false and there is no request to modify other skills or system-wide agent settings.
How to Use
- Make sure OpenClaw is installed (local or Docker)
- Run the install command in chat:
/install kiln - After installation, invoke the skill by name or use
/kiln - Provide required inputs per the skill's parameter spec and get structured output
Version History
v0.5.0
v0.5.0 — Describe it or draw it. Kiln makes it real. Design Intelligence, Printability Engine, Multi-Part Assembly, Cost Estimation, 430+ MCP tools.
v0.4.2
v0.4.2: 432 MCP tools, 132 CLI commands. Bambu 3MF cost estimation, cold-start heatup fix, did-you-mean CLI, SDCP V3 Elegoo support.
v0.1.0
Initial release of Kiln skill: AI-powered 3D printer control, model generation, and manufacturing integration.
- Control 3D printers via AI with 273 MCP tools and 107 CLI commands.
- Supports text/sketch-to-3D generation, model marketplace search, and multi-printer fleets.
- CLI and MCP interfaces available; easy setup and safety enforcement included.
- Integrates with major fulfillment services (Craftcloud, Sculpteo) for outsourced manufacturing.
- Model generation supports providers like Gemini, Meshy, Tripo3D, Stability AI, and OpenSCAD.
- Detailed CLI commands and agent workflow guidelines provided for setup, printing, and advanced automation.
Metadata
Frequently Asked Questions
What is Kiln?
Control 3D printers with AI agents — 430 MCP tools, 114 CLI commands, text/sketch-to-3D generation, model marketplace search, multi-printer fleet support, sa... It is an AI Agent Skill for Claude Code / OpenClaw, with 689 downloads so far.
How do I install Kiln?
Run "/install kiln" in the OpenClaw or Claude Code chat to install it in one step — no extra setup required.
Is Kiln free?
Yes, Kiln is completely free, licensed under MIT-0. You can download, install and use it at no cost.
Which platforms does Kiln support?
Kiln is cross-platform and runs anywhere OpenClaw / Claude Code is available (darwin, linux).
Who created Kiln?
It is built and maintained by codeofaxel (@codeofaxel); the current version is v0.5.0.
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