Code Reviewer
LeoYeAI/openclaw-master-skills
Code review automation for TypeScript, JavaScript, Python, Go, Swift, Kotlin.
Authoring playbook for building agents that write, edit, review, or refactor code.
Install Coding Agent
$ npx skills add mastra-ai/mastra --skill coding-agent -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install mastra-ai/mastra coding-agent --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/mastra-ai/mastra.git skills-src && mkdir -p .claude/skills && cp -r skills-src/packages/editor/src/ee/workspace/skills/coding-agent .claude/skills/coding-agent && 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 "coding-agent" agent skill from https://github.com/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agent into .claude/skills/coding-agent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coding-agent", 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/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agentType 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 mastra-ai/mastra --skill coding-agent -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install mastra-ai/mastra coding-agent --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .agents/skills && cp -r skills-src/packages/editor/src/ee/workspace/skills/coding-agent .agents/skills/coding-agent && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "coding-agent" agent skill from https://github.com/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agent into .agents/skills/coding-agent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coding-agent", 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 mastra-ai/mastra --skill coding-agent -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install mastra-ai/mastra coding-agent --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/packages/editor/src/ee/workspace/skills/coding-agent .cursor/skills/coding-agent && 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 "coding-agent" agent skill from https://github.com/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agent into .cursor/skills/coding-agent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coding-agent", 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/mastra-ai/mastra.git --path packages/editor/src/ee/workspace/skills/coding-agent--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 mastra-ai/mastra --skill coding-agent -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install mastra-ai/mastra coding-agent --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/packages/editor/src/ee/workspace/skills/coding-agent .gemini/skills/coding-agent && 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 "coding-agent" agent skill from https://github.com/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agent into .gemini/skills/coding-agent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coding-agent", 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 mastra-ai/mastra coding-agentInstalls 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 mastra-ai/mastra --skill coding-agent -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .github/skills && cp -r skills-src/packages/editor/src/ee/workspace/skills/coding-agent .github/skills/coding-agent && 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 "coding-agent" agent skill from https://github.com/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agent into .github/skills/coding-agent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coding-agent", 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 mastra-ai/mastra --skill coding-agent -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install mastra-ai/mastra coding-agent --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/mastra-ai/mastra.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/packages/editor/src/ee/workspace/skills/coding-agent .opencode/skills/coding-agent && 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 "coding-agent" agent skill from https://github.com/mastra-ai/mastra/tree/main/packages/editor/src/ee/workspace/skills/coding-agent into .opencode/skills/coding-agent/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "coding-agent", 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
coding-agent- GitHub stars
- 29k
- Token cost
- ~2.3k tokens
- SKILL.md length
- 676 words
- Files
- 1
- Skills in repo
- 44
- Repo updated
- First seen
- Licence
- Custom licence
At a glance
Authoring playbook for building agents that write, edit, review, or refactor code.
- Works in 2 steps: Workspace-connected coding agent — use… → No-workspace code generator — use this…
- Asks for an agent that writes scripts
- SKILL.md covers When to use, Agent identity template, Mode selection and System prompt template, plus 4 more sections
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
What it does
Coding Agent is an agent skill from mastra-ai/mastra. Authoring playbook for building agents that write, edit, review, or refactor code. Use this when the user asks for an agent that writes scripts, generates code, reviews pull requests, refactors a codebase, fixes bugs, implements features, writes tests, or works with programming languages such as Python, TypeScript, JavaScript, Go, Rust, SQL, or shell.
Its SKILL.md is about 2.3k 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, covering Refactoring, Pull requests and Code review. It works with Python, SQL, TypeScript and JavaScript. The repository describes itself as: Mastra is the modern TypeScript framework for AI-powered applications and agents.
When your agent uses it
- Asks for an agent that writes scripts
- Reviews pull requests
- Refactors a codebase
- Implements features
Example prompts
- “/coding-agent”
Requirements
- Python 3
Workflow steps
2 steps, taken from the first numbered list in SKILL.md.
- Workspace-connected coding agent — use this only when the agent has file/repository access and can inspect or edit code. It should read…
- No-workspace code generator — use this when no workspace/file tools are available. It may produce self-contained snippets, commands…
What it can do on your machine
Read from SKILL.md and the folder at commit 79ea2ae. 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
Coding Agent loads about 2.3k tokens when it runs. Until then it costs about 92 tokens; SKILL.md has 676 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
Its licence (Custom licence) doesn't allow us to republish the file, so here is its outline and opening line. It has 676 words (~2,285 tokens).
“Pick this playbook when the user's outcome is producing or modifying source code. Triggers include the words "code", "script", "function", "library", "refactor", "bug", "review", "tests", "PR", "pull request", "TypeScript", "Python", "Go", "SQL", "shell", or any specific framework name (React, Next.js…”
- name
- coding-agent
Files
Just SKILL.md in packages/editor/src/ee/workspace/skills/coding-agent of mastra-ai/mastra.
Open the folder on GitHubat commit 79ea2ae
Compare with similar skills
Coding Agent 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 |
|---|---|---|---|---|---|---|
| Coding Agent this skillmastra-ai/mastra | 29k | — | ~2.3k | Automated safety check: Pass | Custom licence | |
| Code ReviewerLeoYeAI/openclaw-master-skills | 2.2k | 1 repos | ~1.2k | Automated safety check: Pass | MIT | |
| Smart PR ReviewLeoYeAI/openclaw-master-skills | 2.2k | — | ~2.7k | Automated safety check: Notes | MIT | |
| Code Reviewerjewbetcha/opentrace | 116 | 2 repos | ~1.1k | Automated safety check: Notes | MIT | |
| Cross-Language Coding Standardszereight/gitlab-mcp | 2k | 1 repos | ~1.4k | Automated safety check: Pass | MIT | |
| Mz PR ReviewMaterializeInc/materialize | 6.4k | — | ~1.6k | Automated safety check: Notes | Custom licence |
Similar skills
Smart PR Review
LeoYeAI/openclaw-master-skills
Opinionated AI code reviewer — not a yes-machine. An agent skill from LeoYeAI/openclaw-master-skills.
Code Reviewer
jewbetcha/opentrace
Comprehensive code review skill for TypeScript, JavaScript, Python, Swift, Kotlin, Go.
Cross-Language Coding Standards
zereight/gitlab-mcp
Shared reference for naming, function size, complexity and error handling rules that reviewer agents apply across TypeScript, Python, Go, Rust, Java, C# and Swift.
Mz PR Review
MaterializeInc/materialize
Local code review of current branch vs Materialize standards.
Code Reviewer
borghei/Claude-Skills
Code review automation for TypeScript, JavaScript, Python, Go, Swift, and Kotlin.
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Related
Works with
Categories
Questions about Coding Agent
What does Coding Agent do?
Authoring playbook for building agents that write, edit, review, or refactor code. Coding Agent is an agent skill from mastra-ai/mastra. Authoring playbook for building agents that write, edit, review, or refactor code.
When should I use Coding Agent?
Coding Agent fits situations like: asks for an agent that writes scripts; reviews pull requests; refactors a codebase; implements features.
How do I install Coding Agent in Claude Code?
Run `npx skills add mastra-ai/mastra --skill coding-agent -a claude-code`. Or copy the skill folder (packages/editor/src/ee/workspace/skills/coding-agent in mastra-ai/mastra) into .claude/skills/coding-agent in your project. Claude Code loads it when a task matches its description.
How do I install Coding Agent in Codex?
Run `npx skills add mastra-ai/mastra --skill coding-agent -a codex`. Or copy the skill folder (packages/editor/src/ee/workspace/skills/coding-agent in mastra-ai/mastra) into .agents/skills/coding-agent in your project. Codex loads it when a task matches its description.
Can I use Coding Agent 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 mastra-ai/mastra --skill coding-agent -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/coding-agent, .gemini/skills/coding-agent, .github/skills/coding-agent and .opencode/skills/coding-agent in your project.
What does Coding Agent need to run?
SKILL.md names no scripts, command-line tools or credentials: Coding Agent is instructions for the agent only. Our summary lists: Python 3.
Does Coding Agent 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 Coding Agent 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 Coding Agent use?
Coding Agent has a licence file (the repository's licence) that doesn't match a standard licence. Read it on GitHub before reusing the skill.
How many tokens does Coding Agent use?
About 2.3k tokens (SKILL.md is roughly 9.1k 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 Coding Agent?
Skills that share tags, products or a category with Coding Agent: Code Reviewer (LeoYeAI/openclaw-master-skills, 2.2k stars), Smart PR Review (LeoYeAI/openclaw-master-skills, 2.2k stars), Code Reviewer (jewbetcha/opentrace, 116 stars) and Cross-Language Coding Standards (zereight/gitlab-mcp, 2k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Coding Agent?
mastra-ai (a GitHub organization) maintains it in mastra-ai/mastra, which has 28,628 GitHub stars. The repository holds 44 skills in this directory. The repository was last updated on October 8, 2026.
Source: mastra-ai/mastra on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.