Iron Proxy Gateway for NanoClaw
nanocoai/nanoclaw
Installs or refreshes Iron Proxy and its Iron Control web console for NanoClaw, with a local Docker setup, database, credentials and a human approval bridge.
Author Docker Sandboxes kits (agents and mixins) — spec.yaml schema, full lifecycle from sourcing through composition, injection, and runtime, plus distribution and TCK testing.
Install Kit Author
$ npx skills add docker/sbx-kits-contrib --skill kit-author -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install docker/sbx-kits-contrib kit-author --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/docker/sbx-kits-contrib.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/kit-author .claude/skills/kit-author && rm -rf skills-srcUse ~/.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/
Install the "kit-author" agent skill from https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-author into .claude/skills/kit-author/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kit-author", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-authorType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add docker/sbx-kits-contrib --skill kit-author -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install docker/sbx-kits-contrib kit-author --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/docker/sbx-kits-contrib.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/kit-author .agents/skills/kit-author && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "kit-author" agent skill from https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-author into .agents/skills/kit-author/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kit-author", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add docker/sbx-kits-contrib --skill kit-author -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install docker/sbx-kits-contrib kit-author --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/docker/sbx-kits-contrib.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/kit-author .cursor/skills/kit-author && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "kit-author" agent skill from https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-author into .cursor/skills/kit-author/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kit-author", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/docker/sbx-kits-contrib.git --path skills/kit-author--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add docker/sbx-kits-contrib --skill kit-author -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install docker/sbx-kits-contrib kit-author --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/docker/sbx-kits-contrib.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/kit-author .gemini/skills/kit-author && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "kit-author" agent skill from https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-author into .gemini/skills/kit-author/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kit-author", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install docker/sbx-kits-contrib kit-authorInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add docker/sbx-kits-contrib --skill kit-author -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/docker/sbx-kits-contrib.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/kit-author .github/skills/kit-author && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "kit-author" agent skill from https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-author into .github/skills/kit-author/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kit-author", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add docker/sbx-kits-contrib --skill kit-author -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install docker/sbx-kits-contrib kit-author --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/docker/sbx-kits-contrib.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/kit-author .opencode/skills/kit-author && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "kit-author" agent skill from https://github.com/docker/sbx-kits-contrib/tree/main/skills/kit-author into .opencode/skills/kit-author/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "kit-author", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
kit-author- GitHub stars
- 165
- Token cost
- ~989 tokens
- SKILL.md length
- 420 words
- Files
- 11
- Skills in repo
- 1
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Author Docker Sandboxes kits (agents and mixins) — spec.yaml schema, full lifecycle from sourcing through composition, injection, and runtime, plus distribution and TCK testing.
- Tasks that involve Containers
- SKILL.md covers References and Topics
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Kit Author is an agent skill from docker/sbx-kits-contrib, published by the product's own GitHub organization. Author Docker Sandboxes kits (agents and mixins) — spec.yaml schema, full lifecycle from sourcing through composition, injection, and runtime, plus distribution and TCK testing.
Its SKILL.md is about 990 tokens, which your agent loads only when the skill is triggered. The skill folder holds 11 other files (for example `topics/authoring.md`, `topics/bindings.md` and `topics/composition.md`).
It sits in DevOps & Cloud, covering Containers. It works with Docker. The repository describes itself as: Community repository for sbx kits. The licence is Apache-2.0.
When your agent uses it
- Tasks that involve Containers
Example prompts
- “/kit-author”
Requirements
- Docker
What it can do on your machine
Read from SKILL.md and the folder at commit 1710564. 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
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
docs.docker.com
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
Kit Author loads about 989 tokens when it runs. Until then it costs about 47 tokens; SKILL.md has 420 words of instructions outside code blocks.
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 docker/sbx-kits-contrib at commit 1710564, republished under its Apache-2.0 licence (© docker). 420 words, ~989 tokens.
Download SKILL.mdSave it as
.claude/skills/kit-author/SKILL.md (or your agent's skills folder). This skill also uses 10 other files; get the full folder from GitHub.- name
- kit-author
- description
- Author Docker Sandboxes kits (agents and mixins) — spec.yaml schema, full lifecycle from sourcing through composition, injection, and runtime, plus distribution and TCK testing.
- globs
- **/spec.yaml, **/spec.yml, spec/**, tck/**
Kit Author Skill
How to design, write, validate, and distribute kit artifacts (kind: sandbox and kind: mixin) for Docker Sandboxes. Kits are declarative — a spec.yaml plus an optional files/ tree — and the sbx engine translates them into container customizations at sandbox creation or kit add time.
Use this skill when:
- Writing a new kit (mixin or agent) from scratch
- Editing an existing kit in this repository
- Debugging why a kit's commands, files, network rules, or credentials are not taking effect
- Packaging, publishing, or consuming kits from OCI or git sources
- Reviewing kit PRs in this repository
References
- Official docs: https://docs.docker.com/ai/sandboxes/customize/kits/
- Spec package — types, validation, normalization — see
spec/in this repository - TCK package — test compatibility kit — see
tck/in this repository - Repository contributor guide — see
CONTRIBUTING.mdandREADME.md
Topics
Primary topics describe the v2 spec form (schemaVersion: "2"):
- Spec anatomy —
spec.yamltop-level fields (mixins,licenses,extends,locked,args) and every section (sandboxwithimage:/build:+entrypoint/command,agentInstructionswithfilename/content,credentials[]withapiKey/oauthand theschemesugar,permissions.network,ports,environment,setupwithinstall/startup/files,volumes,files/). - Lifecycle — Sourcing → load (schemaVersion-forked decode) → normalize → validate → extends → compose → configure → hooks → container → runtime. What happens at each stage as observed by the kit author.
- Composition —
extends:inheritance vs--kitcomposition. Merge strategies per section, conflict rules, what "last wins" means. - Authoring guide — Step-by-step recipes for a minimal mixin and a full sandbox kit. Where to put files. When to use
files/vssetup.files. - Bindings — The user-side
~/.config/sbx/credentials.yamlfile: how kits and users split the credential contract. - Image publishing — For a
kind: sandboxkit whose image this repo builds: drop aDockerfileat the kit root and name itdocker.io/sbx/<kit>-image:latest; CI discovers it, no workflow edit. Whysandbox.build:is not the answer yet, and the pre-publish window where the TCK cannot pull the image. - Distribution — Local dir, OCI digests, git commit-SHA references. Strict pinning rule. Schema-version compatibility (v2 is a breaking grammar).
sbx kit push/pull/inspect/validate/delete. - Testing — TCK suite, e2e under
deny-all(mandatory locally — CI's e2e legs are skipped for fork PRs), manualsbx kit addverification, proving allow-list enforcement. - Pitfalls — Surprises seen in practice: install-completed is exit-code only,
setup.startupruns on every container start (idempotency required),kit addcannot apply immutable settings,setup.installidempotency + duplication footguns +SBX_CRED_<SERVICE>_MODEcontract, inject/binding domain intersection.
Show full SKILL.md (48 more words)Show less
Legacy reference:
- v1 → v2 migration — Every v1 surface, its v2 equivalent, the
migrate-v1-to-v2.goscript's coverage, and what to migrate by hand. The loader forks onschemaVersion; v2 is a clean grammar with no shims, while v1 keeps loading with deprecation warnings onArtifact.Warningsuntil the Phase 6 cutover.
© docker, Apache-2.0. 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 10 other files in skills/kit-author of docker/sbx-kits-contrib.
- SKILL.md
- topics/authoring.md
- topics/bindings.md
- topics/composition.md
- topics/distribution.md
- topics/image-publishing.md
- topics/lifecycle.md
- topics/pitfalls.md
- topics/spec-anatomy.md
- topics/testing.md
- topics/v1-migration.md
Open the folder on GitHubat commit 1710564
Compare with similar skills
Kit Author 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.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Kit Author this skilldocker/sbx-kits-contrib | 165 | — | ~989 | Automated safety check: Pass | Apache-2.0 | |
| Iron Proxy Gateway for NanoClawnanocoai/nanoclaw | 31k | — | ~4.6k | Automated safety check: Notes | MIT | |
| GreptimeDB Dev Docker ImageGreptimeTeam/greptimedb | 6.7k | — | ~4k | Automated safety check: Notes | Apache-2.0 | |
| Senior DevOps Toolkitmaslennikov-ig/claude-code-orchestrator-kit | 260 | 6 repos | ~1.1k | Automated safety check: Notes | Custom licence | |
| LangBot Deployment Guidelangbot-app/LangBot | 18k | — | ~1.2k | Automated safety check: Notes | Apache-2.0 | |
| Build Openshell Mxc WindowsNVIDIA/OpenShell | 15k | — | ~4.9k | Automated safety check: Pass | Apache-2.0 |
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Related
Works with
Categories
Questions about Kit Author
What does Kit Author do?
Author Docker Sandboxes kits (agents and mixins) — spec.yaml schema, full lifecycle from sourcing through composition, injection, and runtime, plus distribution and TCK testing. Kit Author is an agent skill from docker/sbx-kits-contrib, published by the product's own GitHub organization.yaml schema, full lifecycle from sourcing through composition, injection, and runtime, plus distribution and TCK testing.
When should I use Kit Author?
Kit Author fits situations like: tasks that involve Containers.
How do I install Kit Author in Claude Code?
Run `npx skills add docker/sbx-kits-contrib --skill kit-author -a claude-code`. Or copy the skill folder (skills/kit-author in docker/sbx-kits-contrib) into .claude/skills/kit-author in your project. Claude Code loads it when a task matches its description.
How do I install Kit Author in Codex?
Run `npx skills add docker/sbx-kits-contrib --skill kit-author -a codex`. Or copy the skill folder (skills/kit-author in docker/sbx-kits-contrib) into .agents/skills/kit-author in your project. Codex loads it when a task matches its description.
Can I use Kit Author 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 docker/sbx-kits-contrib --skill kit-author -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/kit-author, .gemini/skills/kit-author, .github/skills/kit-author and .opencode/skills/kit-author in your project.
What does Kit Author need to run?
SKILL.md names no scripts, command-line tools or credentials: Kit Author is instructions for the agent only. Our summary lists: Docker.
Does Kit Author access the network?
SKILL.md names 1 domain. As links in the text: docs.docker.com. This is read from the text; nothing was executed.
Is Kit Author 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 Kit Author use?
Kit Author is published under the Apache-2.0 licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Kit Author use?
About 989 tokens (SKILL.md is roughly 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 Kit Author?
Skills that share tags, products or a category with Kit Author: Iron Proxy Gateway for NanoClaw (nanocoai/nanoclaw, 31k stars), GreptimeDB Dev Docker Image (GreptimeTeam/greptimedb, 6.7k stars), Senior DevOps Toolkit (maslennikov-ig/claude-code-orchestrator-kit, 260 stars) and LangBot Deployment Guide (langbot-app/LangBot, 18k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Kit Author?
docker (a GitHub organization, an official publisher) maintains it in docker/sbx-kits-contrib, which has 165 GitHub stars. The repository was last updated on October 7, 2026.
Source: docker/sbx-kits-contrib on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.