For the open-source Cline agent
Cline Skills
Cline is the open-source autonomous coding agent for VS Code, and skills are how you extend it without writing custom prompts. Install 4,900+ reusable SKILL.md instructions via the skills-hub MCP server. Cline's per-step approval UI works with every skill, so you stay in control.
Then connect Cline to https://api.skills-hub.ai/mcp via its MCP config, no local install required.
Top skills for Cline
01code-review
38 installsThorough code review — checks correctness, security, performance, readability, and test coverage. Gives actionable feedback ranked by severity.
Review02quickstart
20 installsZero to power user in one invoke — detects OS, installs Homebrew/apt/Node.js/Python, sets up Claude Code, authenticates skills-hub CLI, connects MCP servers, and installs recommended skills based on your project. Cross-platform (macOS, Linux, WSL). Idempotent. Use when: 'quickstart', 'setup machine', 'new machine setup', 'install everything', 'get started', 'onboard me', 'setup skills-hub', 'fresh install'.
Productivity03ui-design-system
19 installsUI design system toolkit for Senior UI Designer including design token generation, component documentation, responsive design calculations, and developer handoff tools. Use for creating design systems, maintaining visual consistency, and facilitating design-dev collaboration.
Buildfrom Multi-Domain Skills04marketing-strategy-pmm
13 installsProduct marketing skill for positioning, GTM strategy, competitive intelligence, and product launches. Use when the user asks about product positioning, go-to-market planning, competitive analysis, target audience definition, ICP definition, market research, launch plans, or sales enablement. Covers April Dunford positioning, ICP definition, competitive battlecards, launch playbooks, and international market entry. Produces deliverables including positioning statements, battlecard documents, launch plans, and go-to-market strategies.
Marketingfrom Multi-Domain Skills05Skill Finder
13 installsWorkflow orchestrator. Decomposes a task into ordered steps, finds or installs the right skill for each step, runs the chain, and offers to save it as a reusable skill.
Combo06security-review
13 installsSecurity audit and vulnerability assessment for any codebase. Scans for authentication bypasses, missing auth middleware, broken JWT validation (algorithm confusion, weak secrets, missing expiry), OAuth state and PKCE flaws, IDOR and horizontal privilege escalation, vertical privilege escalation via role manipulation, SQL injection, NoSQL injection, XSS (stored, reflected, DOM), command injection, path traversal, SSRF, CSRF, hardcoded secrets and API keys (sk_live_, AKIA, ghp_), .env and credential file exposure, PII leaking in logs and error responses, overfetching sensitive fields, CORS misconfiguration, session fixation, missing secure/httpOnly/sameSite cookie flags, and Firebase/Firestore rule weaknesses. Produces a severity-ranked findings report with exploit scenarios and fix recommendations. Covers OWASP Top 10.
Reviewfrom Skills Hub07self-improving-agent
12 installsCurate Claude Code's auto-memory into durable project knowledge. Analyze MEMORY.md for patterns, promote proven learnings to CLAUDE.md and .claude/rules/, extract recurring solutions into reusable skills. Use when: (1) reviewing what Claude has learned about your project, (2) graduating a pattern from notes to enforced rules, (3) turning a debugging solution into a skill, (4) checking memory health and capacity.
Buildfrom Multi-Domain Skills08social-media-manager
11 installsWhen the user wants to develop social media strategy, plan content calendars, manage community engagement, or grow their social presence across platforms. Also use when the user mentions 'social media strategy,' 'social calendar,' 'community management,' 'social media plan,' 'grow followers,' 'engagement rate,' 'social media audit,' or 'which platforms should I use.' For writing individual social posts, see social-content. For analyzing social performance data, see social-media-analyzer.
Marketingfrom Multi-Domain Skills09swot-analysis
11 installsPerform a detailed SWOT analysis — strengths, weaknesses, opportunities, and threats with actionable recommendations. Use when doing strategic assessment, competitive analysis, or evaluating a product or business position.
Productfrom Product Management Skills10senior-frontend
11 installsFrontend development skill for React, Next.js, TypeScript, and Tailwind CSS applications. Use when building React components, optimizing Next.js performance, analyzing bundle sizes, scaffolding frontend projects, implementing accessibility, or reviewing frontend code quality.
Buildfrom Multi-Domain Skills11pptx
11 installsUse this skill any time a .pptx file is involved in any way — as input, output, or both. This includes: creating slide decks, pitch decks, or presentations; reading, parsing, or extracting text from any .pptx file (even if the extracted content will be used elsewhere, like in an email or summary); editing, modifying, or updating existing presentations; combining or splitting slide files; working with templates, layouts, speaker notes, or comments. Trigger whenever the user mentions "deck," "slides," "presentation," or references a .pptx filename, regardless of what they plan to do with the content afterward. If a .pptx file needs to be opened, created, or touched, use this skill.
Creativefrom Anthropic12web-research-agent
10 installsA comprehensive autonomous web research agent that performs targeted searches, fetches and parses web content, summarizes findings, and generates structured reports, adhering to industry best practices for accuracy, security, and robustness.
Analysis13design-to-code
10 installsTurn a design into production-quality frontend code: extract a design system with tokens and components, make layouts responsive across breakpoints, add dark mode with WCAG-compliant theming, then run a UX audit to validate everything. Use when implementing UI from Figma, adding theming, making an app responsive, or overhauling frontend design consistency.
Combofrom Skills Hub14markitdown
10 installsConvert files and office documents to Markdown. Supports PDF, DOCX, PPTX, XLSX, images (with OCR), audio (with transcription), HTML, CSV, JSON, XML, ZIP, YouTube URLs, EPubs and more.
Researchfrom Scientific Skills15unit-test
10 installsGenerate comprehensive unit tests with edge cases, error paths, and boundary values. Auto-detects test framework (Vitest, Jest, pytest, go test, flutter_test, RSpec, cargo test, JUnit), scans for untested functions by priority, adopts existing test conventions, generates tests with proper mocks, runs them, and self-heals failures in up to 3 iterations. Measures coverage before and after. Use when you need to add unit tests, increase code coverage, test edge cases, or verify error handling paths.
Testfrom Skills Hub16preflight
9 installsPre-deploy verification gate. Checks git status, build, tests, migrations, secrets, and commit conventions. Reports READY or NOT READY. Read-only, no changes. Trigger words: preflight, pre-deploy check, ready to deploy, deployment checklist.
QAfrom Skills Hub17senior-backend
9 installsDesigns and implements backend systems including REST APIs, microservices, database architectures, authentication flows, and security hardening. Use when the user asks to "design REST APIs", "optimize database queries", "implement authentication", "build microservices", "review backend code", "set up GraphQL", "handle database migrations", or "load test APIs". Covers Node.js/Express/Fastify development, PostgreSQL optimization, API security, and backend architecture patterns.
Buildfrom Multi-Domain Skills18seo-audit
9 installsWhen the user wants to audit, review, or diagnose SEO issues on their site. Also use when the user mentions "SEO audit," "technical SEO," "why am I not ranking," "SEO issues," "on-page SEO," "meta tags review," or "SEO health check." For building pages at scale to target keywords, see programmatic-seo. For adding structured data, see schema-markup.
Marketingfrom Multi-Domain Skills
Frequently asked questions about Cline skills
What are Cline skills?
Cline skills are reusable SKILL.md instructions that extend Cline, the open-source VS Code coding agent, with specialized capabilities like code review, test generation, deploy automation, and security scanning. They follow the open Agent Skills standard and load on demand via the skills-hub MCP server.
What's the difference between Cline skills and .clinerules?
.clinerules is a project-level file that loads on every conversation as ambient context. Skills are versioned, portable, on-demand instruction sets installed from a registry. Use rules for ambient stack/convention context; use skills for specific recurring jobs.
How do I connect skills-hub to Cline?
Add the skills-hub MCP server to Cline's MCP config, connect to npx @skills-hub-ai/mcp locally, or to the remote endpoint at https://api.skills-hub.ai/mcp. Every installed skill then appears as an MCP prompt inside Cline.
Why use Cline skills instead of writing custom prompts?
Skills are versioned, peer-reviewed, and quality-scored. Instead of re-writing a code-review prompt each session, install one once from the catalog and get the same behavior across every project. Cline's per-step approval UI works with skills, you see exactly what each step does.
Are Cline skills portable to other tools?
Yes, they follow the open Agent Skills standard (SKILL.md). The same skill runs unchanged in Cline, Claude Code, Cursor, Codex CLI, Windsurf, GitHub Copilot, and any MCP-compatible tool. Bring your own API key or use bundled provider keys.
Is this free?
Yes. Cline is Apache 2.0 open source. skills-hub.ai, the CLI, and the MCP server are all free. You pay only for the underlying API tokens (Claude, GPT, Gemini, OpenRouter, or local models).
Compare Cline to other tools
See how Cline stacks up against Cursor, Claude Code, and Windsurf.