Code Assistants skills for Claude Code and Codex
Skills that shape how an agent writes and changes code: refactoring playbooks, spec-to-implementation workflows, small-step development and handoffs to other coding agents such as Jules or Grok Build. They give the agent a working method so edits stay deliberate across a large codebase.
Highest-scoring coding assistant skills in the October 22, 2026 snapshot: grok-build from sanjay3290/ai-skills (87/100), code-transfer from mhattingpete/claude-skills-marketplace (77/100) and typescript-magician from mcollina/skills (77/100). Scores come from the Suede Skill Check.
- 21 listed skills
- 10 repositories
- 5 with full pages
9 from official publishers. 1 bundle scripts. 0 connect to an outside service. Listed in Code Review and Code Quality (10), Developer Tools and Frameworks (8), AI Agents and LLM Engineering (3).
All 21 coding assistant skills
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| Skill | Repository | What it does |
|---|---|---|
| code-refactor 75/100 · C | mhattingpete/claude-skills-marketplace | Performs bulk refactoring such as renaming variables and functions across files, replacing deprecated code patterns, and updating API calls. |
| code-transfer 77/100 · C | mhattingpete/claude-skills-marketplace | Copies or moves code between files with line-based precision, including moving functions or classes, extracting code blocks, and inserting code at specific line numbers. |
| coding-agent 75/100 · C | swarmclawai/swarmclaw | Delegates coding tasks to external coding agents such as Claude Code, Codex, Pi, and OpenCode via shell, including new features, PR reviews, and refactoring. |
| grok-build 87/100 · B | sanjay3290/ai-skills | Delegates well-specified implementation tasks to xAI's Grok Build CLI running headlessly while the assistant writes task specs, reviews every diff, and owns the result. |
| typescript-magician 77/100 · C | mcollina/skills | Designs complex generic types, refactors any types to strict alternatives, creates type guards and utility types, and resolves TypeScript compiler errors. |
| comment-code-generate-a-tutorial 63/100 · D | github/awesome-copilot | Transform this Python script into a polished, beginner-friendly project by refactoring the code, adding clear instructional comments, and generating… |
| go-refactoring 95/100 · A | eduardo-sl/go-agent-skills | Safe refactoring workflow for Go: behavior-preserving steps, compiler-checked renames, extracting packages, breaking circular dependencies, and… |
| implement 59/100 · D | mattpocock/skills | Implement a piece of work based on a spec or set of tickets. |
| implement-spec 63/100 · D | mattpocock/skills | Implement the result of /to-spec and /to-tickets in code. |
| java-refactoring-extract-method 62/100 · D | github/awesome-copilot | Refactoring using Extract Methods in Java Language |
| java-refactoring-remove-parameter 62/100 · D | github/awesome-copilot | Refactoring using Remove Parameter in Java Language |
| javascript-pro 84/100 · B | jeffallan/claude-skills | Writes, debugs, and refactors JavaScript code using modern ES2023+ features, async/await patterns, ESM module systems, and Node.js APIs. Use when… |
| jules 84/100 · B | sanjay3290/ai-skills | Delegate coding tasks to Google Jules AI agent for asynchronous execution. Use when user says: 'have Jules fix', 'delegate to Jules', 'send to… |
| karpathy-guidelines 71/100 · C | infrasity-labs/dev-gtm-claude-skills | Behavioral guidelines to reduce common LLM coding mistakes. Use when writing, reviewing, or refactoring code to avoid overcomplication, make… |
| quasi-coder 77/100 · C | github/awesome-copilot | Expert 10x engineer skill for interpreting and implementing code from shorthand, quasi-code, and natural language descriptions. Use when… |
| refactor 69/100 · D | github/awesome-copilot | Surgical code refactoring to improve maintainability without changing behavior. Covers extracting functions, renaming variables, breaking down god… |
| refactor-method-complexity-reduce 69/100 · D | github/awesome-copilot | Refactor given method `${input:methodName}` to reduce its cognitive complexity to `${input:complexityThreshold}` or below, by extracting helper… |
| refactor-plan 74/100 · C | github/awesome-copilot | Create a concrete plan before starting a multi-file refactor. Use when the user asks to plan, sequence, scope, or safely execute a refactor across… |
| refactoring-patterns 81/100 · B | wondelai/skills | Apply named refactoring transformations to improve code structure without changing behavior. Use when the user mentions "refactor this", "code… |
| review-and-refactor 58/100 · D | github/awesome-copilot | Review and refactor code in your project according to defined instructions |
| tiny-stepping 71/100 · C | github/awesome-copilot | Incremental development workflow that makes the smallest meaningful change per step and pauses for feedback, so the direction gets validated early… |
How to choose coding assistant skills
Separate method skills from delegation skills. Refactoring and implementation workflows run inside your own agent as Markdown instructions; delegation skills hand work to another coding agent and need that agent's CLI or account set up first.
Refactoring skills range from single named moves (extract method, remove parameter) to multi-file plans. Pick the narrow ones for routine cleanup and the planning ones before a change that touches many files.
Workflow skills like tiny stepping or implement-from-spec change how the agent approaches every task. Install one method and keep it, since overlapping methods give the agent conflicting instructions.
Related topics
Refactoring 23Codex, Cursor and Coding Agents 23Subagents and Multi-Agent Orchestration 40Java and JVM 20TypeScript and Node.js 18Code Review 50Documentation and READMEs 42Go 34
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