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Skills, MCP servers, prompts, assistants and connectors. Every listing shows its author, version and the permissions it needs.
On the shelves20,989
- MCP servers18,838
- Skills1,282
- Assistants651
- Prompts218
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Coding
mattpocock 281kTest-Driven DevelopmentTest-driven development. Use when the user wants to build features or fix bugs test-first, mentions "red-green-refactor", or wants integration tests.SkillNo codeCoding- mattpocock 281kScaffold ExercisesCreate exercise directory structures with sections, problems, solutions, and explainers that pass linting. Use when user wants to scaffold exercises, create exercise stubs, or set up a new course section.SkillNo codeEducationCoding
addyosmani 103kSecurity AuditorSecurity engineer focused on vulnerability detection, threat modeling, and secure coding practices. Use for security-focused code review, threat analysis, or hardening recommendations.AssistantSecurityCoding- addyosmani 103kTest-Driven DevelopmentDrives development with tests using the red-green-refactor loop. Use when implementing any logic, fixing any bug, or changing any behavior. Use when you need to prove that code works, when a bug report arrives, or when you're about to modify existing functionality.SkillNo codeCoding
- addyosmani 103kSenior Code ReviewerSenior code reviewer that evaluates changes across five dimensions — correctness, readability, architecture, security, and performance. Use for thorough code review before merge.AssistantSecurityCodingArchitecture
obra 297kSystematic DebuggingUse when encountering any bug, test failure, or unexpected behavior, before proposing fixesSkillNode.jsCoding
alirezarezvani 28kNamed-Persona Adversarial ReviewCode review through the lens of real engineers' documented philosophies (Torvalds, Thompson, Carmack, Kent Beck, Jobs, Cagan). Complements abstract-role adversarial review with named, sourced perspectives. Use when automated review findings feel generic, when a PR has architectural or UX impact, or when the author wants pre-submit hardening beyond standard checks.SkillNo codeDesignCoding- obra 297kRequesting Code ReviewUse when completing tasks, implementing major features, or before merging to verify work meets requirementsSkillNo codeCoding
- obra 297kCode Review ReceptionUse when receiving code review feedback, before implementing suggestions, especially if feedback seems unclear or technically questionable - requires technical rigor and verification, not performative agreement or blind implementationSkillNo codeCoding
wshobson 40kElixir proWrite idiomatic Elixir code with OTP patterns, supervision trees, and Phoenix LiveView. Masters concurrency, fault tolerance, and distributed systems.AssistantSame as sessionCoding- affaan-m 275kRefactor & Dead Code CleanerDead code cleanup and consolidation specialist. Runs analysis tools (knip, depcheck, ts-prune) to identify dead code and safely removes it.AssistantSonnetCoding
- addyosmani 103kCode SimplificationSimplifies code for clarity. Use when refactoring code for clarity without changing behavior. Use when code works but is harder to read, maintain, or extend than it should be. Use when reviewing code that has accumulated unnecessary complexity.SkillNo codeCoding
- mattpocock 281kcode-reviewReview the changes since a fixed point (commit, branch, tag, or merge-base) along two axes: Standards (does the code follow this repo's documented coding standards?) and Spec (does the code match what the originating issue/spec asked for?). Runs both reviews in parallel sub-agents and reports them side by side. Use when the user wants to review a branch, a PR, work-in-progress changes, or asks to "review since X".SkillNo codeCoding
- affaan-m 275kTDD guideTest-Driven Development specialist enforcing write-tests-first methodology. Ensures 80%+ test coverage.AssistantSonnetCoding
- addyosmani 103kDebugging and Error RecoveryGuides systematic root-cause debugging. Use when tests fail, builds break, something that worked yesterday broke, behavior doesn't match expectations, or you encounter any unexpected error. Use when you need to figure out what broke and why — a systematic approach to finding and fixing the root cause rather than guessing.SkillNo codeCoding
vercel-labs 32kReact Composition PatternsReact composition patterns that scale. Use when refactoring components with boolean prop proliferation, building flexible component libraries, or designing reusable APIs. Triggers on tasks involving compound components, render props, context providers, or component architecture. Includes React 19 API changes.SkillNo codeCloudFrontendCoding- addyosmani 103kBrowser Testing with DevToolsTests in real browsers via Chrome DevTools MCP. Use when building or debugging anything that runs in a browser. Use when you need to inspect the DOM, capture console errors, analyze network requests, profile performance, or verify visual output with real runtime data. Requires the chrome-devtools MCP server to be configured.SkillMedium riskNo codeBrowser automationTestingCoding
openai 28kSecurity Best PracticesPerform language and framework specific security best-practice reviews and suggest improvements. Trigger only when the user explicitly requests security best practices guidance, a security review/report, or secure-by-default coding help. Trigger only for supported languages (python, javascript/typescript, go). Do not trigger for general code review, debugging, or non-security tasks.SkillNo codeSecurityCoding- alirezarezvani 28kTech Debt TrackerScan codebases for technical debt, score severity, track trends, and generate prioritized remediation plans. Use when users mention tech debt, code quality, refactoring priority, debt scoring, cleanup sprints, or code health assessment. Also use for legacy code modernization planning and maintenance cost estimation.SkillPythonHealthCoding
- affaan-m 275kArchitectSoftware architecture specialist for system design, scalability, and technical decision-making.AssistantOpusCodingArchitecture
- addyosmani 103kCode Review and QualityConducts multi-axis code review. Use before merging any change. Use when reviewing code written by yourself, another agent, or a human. Use when you need to assess code quality across multiple dimensions before it enters the main branch. Use when asked to review a diff or a pull request, even when the diff is pasted inline.SkillNo codeGit and GitHubCoding
- msitarzewski 158kApplication Security EngineerAppSec specialist who secures the software development lifecycle through threat modeling, secure code review, SAST/DAST integration, and developer security education that makes secure code the default.AssistantSecurityEducationCoding
- openai 28kPlaywright Interactive SkillPersistent browser and Electron interaction through `js_repl` for fast iterative UI debugging.SkillNo codeBrowser automationCoding
- affaan-m 275kPlannerExpert planning specialist for complex features and refactoring. Automatically activated for planning tasks.AssistantOpusCoding