Control a Klipper 3D printer through Moonraker: print jobs, file uploads, emergency stop, smart plugs, and gated raw G-code.

MITAuto-check passedBackend & APIs

Install Moonraker

skills CLI
$ npx skills add Anil-matcha/awesome-muse-connectors --skill moonraker -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install Anil-matcha/awesome-muse-connectors moonraker --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/Anil-matcha/awesome-muse-connectors.git skills-src && mkdir -p .claude/skills && cp -r skills-src/connectors/moonraker .claude/skills/moonraker && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
moonraker
GitHub stars
1.3k
Token cost
~1.4k tokens
SKILL.md length
453 words
Files
2
Skills in repo
153
Repo updated
First seen
Licence
MIT

At a glance

Control a Klipper 3D printer through Moonraker: print jobs, file uploads, emergency stop, smart plugs, and gated raw G-code.

  • Works in 4 steps: HIGH: raw G-code (gcode-script) can… → MEDIUM: print start/pause/resume/cancel,… → There are no vendor quotas, but do not… → …
  • Phrases: moonraker
  • SKILL.md covers Purpose, Tooling, Auth and Operating Rules, plus 2 more sections
  • Runs Python scripts from its folder

What it does

Moonraker is an agent skill from Anil-matcha/awesome-muse-connectors. Control a Klipper 3D printer through Moonraker: print jobs, file uploads, emergency stop, smart plugs, and gated raw G-code. Trigger phrases: moonraker, klipper, mainsail, fluidd, start print, pause print, emergency stop.

Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files (for example `bin/moonraker.py`).

It sits in Backend & APIs, covering File uploads and storage. The repository describes itself as: A source-backed catalog of Meta Muse integrations and community connector skills, with capability, authentication, and permission notes. The licence is MIT.

When your agent uses it

  • Phrases: moonraker
  • Tasks that involve File uploads and storage

Example prompts

  • “/moonraker”

Requirements

  • Python 3

Workflow steps

4 steps, taken from the first numbered list in SKILL.md.

  1. HIGH: raw G-code (gcode-script) can physically damage the printer. The CLI requires both --enable-raw-gcode (explicit capability flag) and…
  2. MEDIUM: print start/pause/resume/cancel, emergency stop, file upload, and smart-plug power move or heat physical hardware. They need…
  3. There are no vendor quotas, but do not hammer the printer's host: keep status polling to a few times a minute at most.
  4. Never exfiltrate the credential: the CLI only ever handles surrogates. Do not print, log, or transmit any key value.

What it can do on your machine

Read from SKILL.md and the folder at commit d6dc5d8. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    Ships script files (Python), which the agent can run.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Moonraker loads about 1.4k tokens when it runs. Until then it costs about 58 tokens; SKILL.md has 453 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~58
When it runs · the whole SKILL.md, loaded when a task matches
~1.4k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from Anil-matcha/awesome-muse-connectors at commit d6dc5d8, republished under its MIT licence (© Anil-matcha). 453 words, ~1,355 tokens.

Download SKILL.mdSave it as .claude/skills/moonraker/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.
name
moonraker
description
Control a Klipper 3D printer through Moonraker: print jobs, file uploads, emergency stop, smart plugs, and gated raw G-code. Trigger phrases: moonraker, klipper, mainsail, fluidd, start print, pause print, emergency stop.
metadata.includeInPrompt
true
tagline
Control a Klipper-based 3D printer through the Moonraker API server (the backend behind Mainsail, Fluidd and RatOS): read server and print status, list and…
catalog_auth
no credential needed on most LAN installs (optional API key via the secure credential flow)
catalog_hosts
the host you pass via --host

Moonraker

Purpose

Control a Klipper-based 3D printer through the Moonraker API server (the backend behind Mainsail, Fluidd and RatOS): read server and print status, list and upload gcode files, start/pause/resume/cancel prints, trigger the emergency stop, toggle smart-plug devices, and (gated) run raw G-code. Use when the user mentions Moonraker, Klipper, Mainsail, or Fluidd.

Tooling

All commands go through bin/moonraker.py. --host points at Moonraker (default $MOONRAKER_HOST or http://localhost:7125); --insecure skips TLS verification for self-signed reverse proxies. --api-key attaches the stored custom.moonraker credential; omit it on the default no-auth LAN setup.

bash
bin/moonraker.py auth --host http://printer.local:7125   # server info; never needs a credential
bin/moonraker.py status                                   # print state and temperatures
bin/moonraker.py files                                    # list gcode files

# MEDIUM: --confirm "<exact effect>" on first use per printer, then proceed
bin/moonraker.py upload --path ./benchy.gcode --confirm "upload benchy.gcode to printer.local"
bin/moonraker.py print-start --filename benchy.gcode --confirm "start printing benchy.gcode on printer.local"
bin/moonraker.py print-pause --confirm "pause the print on printer.local"
bin/moonraker.py print-resume --confirm "resume the print on printer.local"
bin/moonraker.py print-cancel --confirm "cancel the print on printer.local"
bin/moonraker.py emergency-stop \
    --confirm "emergency stop on printer.local: halt all motion and heaters"
bin/moonraker.py device-power --device enclosure --action on \
    --confirm "turn smart-plug device enclosure on on printer.local"

# HIGH: raw G-code needs BOTH --enable-raw-gcode AND --confirm on EVERY call
bin/moonraker.py gcode-script --script "G28" --enable-raw-gcode \
    --confirm "run raw G-code script: G28"

MEDIUM first-use confirmations are recorded locally (~/.cache/muse-connectors/moonraker/confirmed.json).

Auth

  • Provider id: moonraker (credential is collected as custom.moonraker)
  • Collection: Moonraker has no auth on the LAN by default, so most installs need nothing stored at all. If the printer enables [authorization] API keys, store the key via the secure credential flow (credentials.request_api_access) as custom.moonraker and pass --api-key on each call. The key is never passed on the command line, in the environment, or in a file: --api-key is a flag that takes no value.
  • Allowed hosts: the hostname from --host (validated per call; the surrogate is only ever swapped on egress to that host)
  • Status check: bin/moonraker.py auth (must return "ok": true; also reports whether an API key is stored)
  • Remote access: Moonraker is LAN-first. Reach it remotely through the OctoEverywhere relay, a VPN, or a reverse proxy; the connector does not implement any relay itself.
Show full SKILL.md (220 more words)Show less

Operating Rules

  1. HIGH: raw G-code (gcode-script) can physically damage the printer. The CLI requires both --enable-raw-gcode (explicit capability flag) and --confirm "run raw G-code script: <script>" naming the exact script, on every call. Prefer the high-level print commands whenever they cover the need.
  2. MEDIUM: print start/pause/resume/cancel, emergency stop, file upload, and smart-plug power move or heat physical hardware. They need --confirm naming the exact effect on first use per printer. Emergency stop halts all motion and heaters instantly; reach for it when a print is failing rather than using it as a casual pause.
  3. There are no vendor quotas, but do not hammer the printer's host: keep status polling to a few times a minute at most.
  4. Never exfiltrate the credential: the CLI only ever handles surrogates. Do not print, log, or transmit any key value.

Files

  • SKILL.md
  • bin/moonraker.py

Maturity

🧪 Draft: written from Moonraker's public API docs; not yet live-tested end-to-end.

Honesty flags: endpoint paths (/server/info, /printer/objects/query, /server/files/list, /server/files/upload, /printer/print/{start,pause,resume,cancel}, /printer/emergency_stop, /printer/gcode/script, /machine/device_power/device) follow the official Moonraker reference. Raw G-code is HIGH and doubly gated (--enable-raw-gcode plus per-call --confirm). The [authorization] API-key placement is configured in the credential store at collection time; if Moonraker expects the key somewhere other than the default header placement, reconfigure the credential rather than passing the key on the command line.

© Anil-matcha, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 1 other file in connectors/moonraker of Anil-matcha/awesome-muse-connectors.

  • SKILL.md
  • bin/moonraker.py

Open the folder on GitHubat commit d6dc5d8

Compare with similar skills

Moonraker next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Moonraker compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Moonraker this skillAnil-matcha/awesome-muse-connectors1.3k—~1.4kAutomated safety check: PassMIT
Stripe Projectsfossasia/eventyay1.7k5 repos~2kAutomated safety check: NotesApache-2.0
FoundatioFoundatioFx/Foundatio2.1k—~3.9kAutomated safety check: PassApache-2.0
Spatialduckdb/duckdb-skills6031 repos~1kAutomated safety check: NotesMIT
R Oopab604/claude-code-r-skills2072 repos~1.9kAutomated safety check: PassMIT
Edgestore Setupedgestorejs/edgestore454—~1.8kAutomated safety check: PassMIT

Similar skills

  • Stripe Projects

    fossasia/eventyay

    A skill your agent uses when the user wants to provision infrastructure or third-party services using Stripe Projects.

    1.7k GitHub starsUsed in 5 repos~2k tokens
    Backend & APIsAuto-check: notes
  • Foundatio

    FoundatioFx/Foundatio

    A skill your agent uses when working with Foundatio infrastructure abstractions for .NET -- caching, queuing, messaging, file storage, distributed locking, or background jobs.

    2.1k GitHub stars~3.9k tokensUpdated 2 days ago
    Backend & APIsAuto-check passed
  • Spatial

    duckdb/duckdb-skills

    Official

    Answer questions about spatial data using DuckDB. An agent skill from duckdb/duckdb-skills.

    603 GitHub starsUsed in 1 repo~1k tokens
    Backend & APIsAuto-check: notes
  • R Oop

    ab604/claude-code-r-skills

    R object-oriented programming guide for S7, S3, S4, and vctrs.

    207 GitHub starsUsed in 2 repos~1.9k tokens
    Backend & APIsAuto-check passed
  • Edgestore Setup

    edgestorejs/edgestore

    A skill your agent uses when adding, extending, or troubleshooting EdgeStore file uploads, upload UI, or bucket access policies in a TypeScript/React application.

    454 GitHub stars~1.8k tokensUpdated today
    Backend & APIsAuto-check passed
  • S3 Explore

    duckdb/duckdb-skills

    Official

    Explore and query data on S3, Cloudflare R2, GCS, MinIO, or any S3-compatible storage.

    603 GitHub starsUsed in 1 repo~848 tokens
    Backend & APIsAuto-check: notes

More from Anil-matcha/awesome-muse-connectors

All 153 skills in this repo
  • Airtable

    Anil-matcha/awesome-muse-connectors

    List Airtable bases, read table records, and add records. An agent skill from Anil-matcha/awesome-muse-connectors.

    1.3k GitHub stars~511 tokensUpdated 5 days ago
    Auto-check passed
  • Alphavantage

    Anil-matcha/awesome-muse-connectors

    Stock quotes and daily price history. An agent skill from Anil-matcha/awesome-muse-connectors.

    1.3k GitHub stars~517 tokensUpdated 5 days ago
    Auto-check passed
  • Amadeus

    Anil-matcha/awesome-muse-connectors

    Search travel with Amadeus: flight offers and prices, airport autocomplete, hotel offers, cheapest dates.

    1.3k GitHub stars~699 tokensUpdated 5 days ago
    Auto-check passed
  • Apollo

    Anil-matcha/awesome-muse-connectors

    Search B2B contacts with Apollo.io: find people by title and company, enrich contacts and companies.

    1.3k GitHub stars~492 tokensUpdated 5 days ago
    Auto-check passed
  • Aqara

    Anil-matcha/awesome-muse-connectors

    Read and control Aqara smart home devices: plugs, switches, lights, AC, locks, curtains, scenes.

    1.3k GitHub stars~1.6k tokensUpdated 5 days ago
    Auto-check passed
  • Asana

    Anil-matcha/awesome-muse-connectors

    Read and manage Asana tasks: my tasks, task details, create tasks.

    1.3k GitHub stars~481 tokensUpdated 5 days ago
    Auto-check passed

Categories

Questions about Moonraker

What does Moonraker do?

Control a Klipper 3D printer through Moonraker: print jobs, file uploads, emergency stop, smart plugs, and gated raw G-code. Moonraker is an agent skill from Anil-matcha/awesome-muse-connectors. Control a Klipper 3D printer through Moonraker: print jobs, file uploads, emergency stop, smart plugs, and gated raw G-code.

When should I use Moonraker?

Moonraker fits situations like: phrases: moonraker; tasks that involve File uploads and storage.

How do I install Moonraker in Claude Code?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill moonraker -a claude-code`. Or copy the skill folder (connectors/moonraker in Anil-matcha/awesome-muse-connectors) into .claude/skills/moonraker in your project. Claude Code loads it when a task matches its description.

How do I install Moonraker in Codex?

Run `npx skills add Anil-matcha/awesome-muse-connectors --skill moonraker -a codex`. Or copy the skill folder (connectors/moonraker in Anil-matcha/awesome-muse-connectors) into .agents/skills/moonraker in your project. Codex loads it when a task matches its description.

Can I use Moonraker in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Anil-matcha/awesome-muse-connectors --skill moonraker -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/moonraker, .gemini/skills/moonraker, .github/skills/moonraker and .opencode/skills/moonraker in your project.

What does Moonraker need to run?

Going by SKILL.md and its folder, Moonraker needs Python for the scripts in its folder. Our summary lists: Python 3.

Does Moonraker access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Moonraker safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Moonraker use?

Moonraker is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Moonraker use?

About 1.4k tokens (SKILL.md is roughly 5.4k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.

What are the alternatives to Moonraker?

Skills that share tags, products or a category with Moonraker: Stripe Projects (fossasia/eventyay, 1.7k stars), Foundatio (FoundatioFx/Foundatio, 2.1k stars), Spatial (duckdb/duckdb-skills, 603 stars) and R Oop (ab604/claude-code-r-skills, 207 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Moonraker?

Anil-matcha (a GitHub user) maintains it in Anil-matcha/awesome-muse-connectors, which has 1,347 GitHub stars. The repository holds 153 skills in this directory. The repository was last updated on October 5, 2026.

Source: Anil-matcha/awesome-muse-connectors on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.