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Enforces project-specific development rules and conventions.
Install Dev Rules
$ npx skills add kubernetes-sigs/agent-sandbox --skill dev-rules -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install kubernetes-sigs/agent-sandbox dev-rules --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/kubernetes-sigs/agent-sandbox.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/dev-rules .claude/skills/dev-rules && 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 "dev-rules" agent skill from https://github.com/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rules into .claude/skills/dev-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-rules", 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/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rulesType 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 kubernetes-sigs/agent-sandbox --skill dev-rules -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install kubernetes-sigs/agent-sandbox dev-rules --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kubernetes-sigs/agent-sandbox.git skills-src && mkdir -p .agents/skills && cp -r skills-src/.agents/skills/dev-rules .agents/skills/dev-rules && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "dev-rules" agent skill from https://github.com/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rules into .agents/skills/dev-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-rules", 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 kubernetes-sigs/agent-sandbox --skill dev-rules -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install kubernetes-sigs/agent-sandbox dev-rules --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kubernetes-sigs/agent-sandbox.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/.agents/skills/dev-rules .cursor/skills/dev-rules && 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 "dev-rules" agent skill from https://github.com/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rules into .cursor/skills/dev-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-rules", 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/kubernetes-sigs/agent-sandbox.git --path .agents/skills/dev-rules--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 kubernetes-sigs/agent-sandbox --skill dev-rules -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install kubernetes-sigs/agent-sandbox dev-rules --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kubernetes-sigs/agent-sandbox.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/.agents/skills/dev-rules .gemini/skills/dev-rules && 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 "dev-rules" agent skill from https://github.com/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rules into .gemini/skills/dev-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-rules", 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 kubernetes-sigs/agent-sandbox dev-rulesInstalls 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 kubernetes-sigs/agent-sandbox --skill dev-rules -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/kubernetes-sigs/agent-sandbox.git skills-src && mkdir -p .github/skills && cp -r skills-src/.agents/skills/dev-rules .github/skills/dev-rules && 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 "dev-rules" agent skill from https://github.com/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rules into .github/skills/dev-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-rules", 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 kubernetes-sigs/agent-sandbox --skill dev-rules -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install kubernetes-sigs/agent-sandbox dev-rules --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/kubernetes-sigs/agent-sandbox.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/.agents/skills/dev-rules .opencode/skills/dev-rules && 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 "dev-rules" agent skill from https://github.com/kubernetes-sigs/agent-sandbox/tree/main/.agents/skills/dev-rules into .opencode/skills/dev-rules/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "dev-rules", 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
dev-rules- GitHub stars
- 4.2k
- Token cost
- ~447 tokens
- SKILL.md length
- 228 words
- Files
- 1
- Skills in repo
- 7
- Repo updated
- First seen
- Licence
- Apache-2.0
At a glance
Enforces project-specific development rules and conventions.
- Works in 4 steps: Go Development: Follow standard… → AI-Assisted Code Reviews → API Conventions: Always use the… → …
- Development work in your project
- SKILL.md covers Purpose, Instructions and References
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Dev Rules is an agent skill from kubernetes-sigs/agent-sandbox, published by the product's own GitHub organization. Enforces project-specific development rules and conventions.
Its SKILL.md is about 450 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Development. It works with Kubernetes and GitHub. The repository describes itself as: agent-sandbox enables easy management of isolated, stateful, singleton workloads, ideal for use cases like AI agent runtimes and reinforcement learning (RL). The licence is Apache-2.0.
When your agent uses it
- Development work in your project
Example prompts
- “Use the dev-rules skill to enforce project-specific development rules and conventions”
- “/dev-rules”
Workflow steps
4 steps, taken from the first numbered list in SKILL.md.
- Go Development: Follow standard Kubernetes Go patterns and best practices.
- AI-Assisted Code Reviews
- API Conventions: Always use the k8s-api-conventions skill when modifying APIs.
- Creating Pull Requests: When creating a Pull Request, always use and fill out the project's PR template (.github/pull_request_template.md).
What it can do on your machine
Read from SKILL.md and the folder at commit cd0761d. 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
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
Dev Rules loads about 447 tokens when it runs. Until then it costs about 18 tokens; SKILL.md has 228 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 kubernetes-sigs/agent-sandbox at commit cd0761d, republished under its Apache-2.0 licence (© kubernetes-sigs). 228 words, ~447 tokens.
Download SKILL.mdSave it as
.claude/skills/dev-rules/SKILL.md (or your agent's skills folder).- name
- dev-rules
- description
- Enforces project-specific development rules and conventions.
Development Rules
Purpose
This skill ensures that AI agents contributing to this project follow project-specific rules regarding code review and style to maintain compliance and quality.
Instructions
- Go Development: Follow standard Kubernetes Go patterns and best practices.
- AI-Assisted Code Reviews:
- Do NOT directly apply code suggestions from CodeRabbit (or any AI review bot) via the GitHub UI. Doing so adds the AI bot as a co-author to the commit. Since AI bots cannot sign the Kubernetes CLA, this will cause the CLA check to fail and block the PR. Manual review and application of suggestions are required.
- Once the initial AI review (e.g., by CodeRabbit) is complete, ensure all review comments are addressed and resolved so the PR is ready for maintainers.
- API Conventions: Always use the
k8s-api-conventionsskill when modifying APIs. - Creating Pull Requests: When creating a Pull Request, always use and fill out the project's PR template (
.github/pull_request_template.md).- Description: Provide a clear and concise description in the "What this PR does" section.
- Related Issues: Link related issues using "Fixes #issue" or "Ref link".
- Release Notes: Fill out the
release-noteblock. Note that automated release notes are generated from the description in the first section, so ensure it is comprehensive. For breaking changes, describe required actions and ask the maintainers to label the PR withrelease-note-action-required.
References
- Project rules (as documented in
CONTRIBUTING.md)
© kubernetes-sigs, 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
Just SKILL.md in .agents/skills/dev-rules of kubernetes-sigs/agent-sandbox.
Open the folder on GitHubat commit cd0761d
Compare with similar skills
Dev Rules 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 |
|---|---|---|---|---|---|---|
| Dev Rules this skillkubernetes-sigs/agent-sandbox | 4.2k | — | ~447 | Automated safety check: Pass | Apache-2.0 | |
| Mariadb Operator Commentmariadb-operator/mariadb-operator | 1k | — | ~2.2k | Automated safety check: Pass | Apache-2.0 | |
| Mariadb Operator PR Reviewmariadb-operator/mariadb-operator | 1k | — | ~3.3k | Automated safety check: Pass | Apache-2.0 | |
| Mariadb Operator Release Notesmariadb-operator/mariadb-operator | 1k | — | ~3.3k | Automated safety check: Pass | Apache-2.0 | |
| Git Coauthoropenshift-examples/web | 181 | — | ~472 | Automated safety check: Pass | None | |
| Cherry Pick PRkubernetes-sigs/cloud-provider-azure | 294 | — | ~636 | Automated safety check: Pass | Apache-2.0 |
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Categories
Questions about Dev Rules
What does Dev Rules do?
Enforces project-specific development rules and conventions. Dev Rules is an agent skill from kubernetes-sigs/agent-sandbox, published by the product's own GitHub organization. Enforces project-specific development rules and conventions.
When should I use Dev Rules?
Dev Rules fits situations like: development work in your project.
How do I install Dev Rules in Claude Code?
Run `npx skills add kubernetes-sigs/agent-sandbox --skill dev-rules -a claude-code`. Or copy the skill folder (.agents/skills/dev-rules in kubernetes-sigs/agent-sandbox) into .claude/skills/dev-rules in your project. Claude Code loads it when a task matches its description.
How do I install Dev Rules in Codex?
Run `npx skills add kubernetes-sigs/agent-sandbox --skill dev-rules -a codex`. Or copy the skill folder (.agents/skills/dev-rules in kubernetes-sigs/agent-sandbox) into .agents/skills/dev-rules in your project. Codex loads it when a task matches its description.
Can I use Dev Rules 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 kubernetes-sigs/agent-sandbox --skill dev-rules -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/dev-rules, .gemini/skills/dev-rules, .github/skills/dev-rules and .opencode/skills/dev-rules in your project.
What does Dev Rules need to run?
SKILL.md names no scripts, command-line tools or credentials: Dev Rules is instructions for the agent only.
Does Dev Rules 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 Dev Rules 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 Dev Rules use?
Dev Rules 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 Dev Rules use?
About 447 tokens (SKILL.md is roughly 1.8k 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 Dev Rules?
Skills that share tags, products or a category with Dev Rules: Mariadb Operator Comment (mariadb-operator/mariadb-operator, 1k stars), Mariadb Operator PR Review (mariadb-operator/mariadb-operator, 1k stars), Mariadb Operator Release Notes (mariadb-operator/mariadb-operator, 1k stars) and Git Coauthor (openshift-examples/web, 181 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Dev Rules?
kubernetes-sigs (a GitHub organization, an official publisher) maintains it in kubernetes-sigs/agent-sandbox, which has 4,183 GitHub stars. The repository holds 7 skills in this directory. The repository was last updated on October 8, 2026.
Source: kubernetes-sigs/agent-sandbox on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.