Code review and refactoring: skills, plugins, subagents, slash commands and mcp servers

security-and-hardening addyosmani skill Guides threat modeling and security checks for code that handles user input, authentication, sessions, or external services. Use it when building a feature that accepts untrusted data or reviewing code before release. Claude Code CX Codex Cursor +1 69,400installs code-simplification addyosmani skill Clarifies code and removes unnecessary complexity without altering behavior. Useful when refactoring working features that feel harder to maintain than they should. Claude Code CX Codex Cursor +1 62,200installs debugging-and-error-recovery addyosmani skill This skill guides an agent from reproducing a failure to checking the fix. Use it when tests fail, a build breaks, or runtime behavior differs from expectations. Claude Code CX Codex Cursor +1 62,200installs api-and-interface-design addyosmani skill Guides API and module-boundary design with explicit contracts, validation, and consistent errors. Use it for REST, GraphQL, or public interfaces. Claude Code CX Codex Cursor +1 61,900installs incremental-implementation addyosmani skill Directs agents to deliver code in thin, verified vertical slices instead of bulk edits. Fits multi-file refactoring and feature work behind flags. Claude Code CX Codex Cursor +1 61,300installs test-driven-development addyosmani skill This skill guides work through red-green-refactor: write a failing test, add the smallest passing code, then refactor. Use it for logic, bugs, and behavior changes. Claude Code CX Codex Cursor +1 61,300installs using-agent-skills addyosmani skill A meta-skill that tells the agent which skill from the agent-skills collection fits the task in front of it, and which behaviour rules apply all the time. Claude Code CX Codex Cursor +1 58,500installs source-driven-development addyosmani skill Grounds agent coding decisions in official documentation. It helps verify framework APIs against detected versions and avoids outdated patterns from model training data. Claude Code CX Codex Cursor +1 57,600installs deprecation-and-migration addyosmani skill Guides the retirement of old systems, APIs, and features and moves users to a replacement. It also covers production database migrations without downtime. Claude Code CX Codex Cursor +1 56,800installs diagnosing-superpowers Jesse Vincent skill Investigates a failed Superpowers session through its transcripts and builds an evidence-based report. Use it when work repeats, plans are ignored, or a skill fails to fire. Claude Code CX Codex 19,996installs doubt-driven-development addyosmani skill This skill sends non-trivial decisions to a fresh-context reviewer looking for flaws. Use it before changes that are hard to undo or costly to debug later. Claude Code CX Codex Cursor +1 56,100installs constraint-driven-development addyosmani skill Turns a project's quality bar into CONSTRAINTS.md with real numbers, then watches the diff for weakened checks and deleted tests. Claude Code CX Codex Cursor +1 32,800installs code-reviewer official Anthropic subagent Reviews code changes against CLAUDE.md project rules and flags material defects. Run it before a commit or pull request. Claude Code 31,050installs code-reviewer official Anthropic subagent This subagent checks code changes for bugs, security issues, and project-rule violations. Use it when a review should focus on findings that matter. Claude Code 31,050installs fix-security-vulnerabilities-with-strix usestrix skill This skill triages validated Strix findings, fixes their root causes, and runs Strix again to verify the result. Use it after a CLI or cloud scan. Claude Code CX Codex Cursor +1 15,500installs improve shadcn skill Surveys any codebase in read-only mode and writes self-contained implementation plans for other models to execute. Helps audit bugs, tech debt, and security without touching code. Claude Code CX Codex Cursor +1 37,500installs mcp-apps-builder mcp-use skill Build, modify, debug, migrate, review, and verify TypeScript MCP servers and MCP Apps with mcp-use. Use it for tools, Views, OAuth, and Skills over MCP. Claude Code CX Codex Cursor +1 32,200installs make-interfaces-feel-better jakubkrehel skill This skill guides small UI refinements, from icon alignment to motion. Use it while building components or reviewing frontend code. Claude Code CX Codex Cursor +1 73,200installs application-security-testing usestrix skill This skill selects tests for source code, a live web app, APIs, and CI, then turns confirmed findings into a ranked remediation plan. Use it for an AppSec review. Claude Code CX Codex Cursor +1 12,300installs coding-agent openclaw skill This skill sends large coding tasks to Codex, Claude Code, or OpenCode as background workers. Use it for refactors, PR reviews, and issue-to-PR work. Claude Code CX Codex Cursor +1 6,500installs security-best-practices github.com/openai/skills skill A skill that reviews code against security best practices for Python, JavaScript/TypeScript and Go, then suggests fixes. Claude Code CX Codex Cursor +1 357installs oracle openclaw skill Bundles selected project files and prompts for an independent second-model review via API or browser. Helps inspect patches and debug tricky bugs. Claude Code CX Codex Cursor +1 5,200installs open-code-review alibaba skill Skill runs the ocr CLI to review Git changes with AI. Produces line-level comments and can apply fixes on request. Claude Code CX Codex Cursor +1 6,800installs claude-md-improver official Anthropic skill This skill audits CLAUDE.md files, produces a quality report, and suggests focused edits. Use it when project instructions need a careful review. Claude Code 12,558installs fix react skill The skill formats changed files and checks for remaining lint issues before a commit. Use it when code needs to pass CI checks. Claude Code CX Codex Cursor +1 2,300installs react-doctor millionco skill Audits React codebases for architecture, accessibility, and rendering issues. Computes a health score from 0 to 100 and helps patch regressions. Claude Code CX Codex Cursor +1 19,000installs security-auditor official Anthropic subagent This subagent searches code for security flaws and gives engineers concrete fixes. Use it to review a project before hardening or modernization work. Claude Code 10,718installs nature-reviewer Yuan1z0825 skill The skill runs a Nature-style referee assessment of a scientific manuscript: three independent reviewer reports plus a post-review synthesis. Useful before you submit. Claude Code CX Codex Cursor +1 13,800installs gh-stack official github skill Manages stacked branches and pull requests with the gh-stack extension. Keeps multi-part work isolated into clean layers without freezing the agent in interactive prompts. Claude Code CX Codex Cursor +1 18,700installs test-engineer official Anthropic subagent This subagent captures legacy behavior in tests and compares it with a rewritten implementation. Use it before changing existing modules. Claude Code 9,715installs refactor official github skill This skill reshapes existing code without changing its external behavior. Use it for gradual cleanup of large functions, duplication, weak types, and code smells. GitHub Copilot 22,321installs smart-explore thedotmack skill Uses tree-sitter to map code structure and find symbols. Useful when you need to explore a codebase without loading every full file. Claude Code CX Codex Cursor +1 7,300installs workers-best-practices cloudflare skill Guides coding agents on production Cloudflare Workers standards, Wrangler typing, observability setup, and runtime anti-pattern checks. Claude Code CX Codex Cursor +1 124,900installs claude-automation-recommender official Anthropic skill Analyzes a codebase and recommends Claude Code hooks, subagents, skills, plugins, and MCP servers. Useful when setting up a project or refining an existing workflow. Claude Code 9,057installs bmad-build bmad-code-org skill Takes a delegated feature, story, bug fix or bare issue link and turns it into working code that has been reviewed and verified. Needs BMad set up in the project. Claude Code CX Codex Cursor +1 12,400installs do thedotmack skill The skill runs an implementation plan in phases through subagents. Use it when a plan needs execution with checks after each phase. Claude Code CX Codex Cursor +1 7,000installs bmad-code-review bmad-code-org skill This skill runs several independent reviewers in parallel, then triages their findings. Useful when you want changes checked before a merge. Claude Code CX Codex Cursor +1 12,100installs bmad-agent-dev bmad-code-org skill Activates Amelia, a senior software engineer persona executing stories through red, green, refactor and acceptance criteria. Claude Code CX Codex Cursor +1 11,700installs bmad-review bmad-code-org skill Runs a diff, pull request or document through one or more review lenses and reports triaged findings. Only fires when you actually ask for a review. Claude Code CX Codex Cursor +1 11,400installs bmad-advanced-elicitation bmad-code-org skill This skill makes an agent recheck and improve its latest output through selected critique methods. Use it for plans, decisions, and drafts. Claude Code CX Codex Cursor +1 11,400installs