Skills for Claude Code, Codex and Cursor

sharp-edges trailofbits Audits API designs and configuration schemas for developer footguns. Flags dangerous defaults and fragile interfaces where the easiest path causes security vulnerabilities. Claude Code CX Codex Cursor +1 6,900installs skill-forge sanyuan0704 A skill for building production-grade skills in Claude Code. Walks you through eight stages: from understanding the task to packaging, with checklists, iron laws, and writing techniques for reliable prompts. Claude Code CX Codex Cursor +1 4,100installs email-drafter official github This skill studies your email style and drafts messages for specific recipients. Use it when you need a reply or follow-up that sounds like your usual correspondence. GitHub Copilot 1,400installs langchain-rag langchain-ai Equips coding agents with reference RAG implementations in Python and TypeScript using LangChain loaders, splitters, and vector stores. Claude Code CX Codex Cursor +1 17,500installs gstack-openclaw-office-hours garrytan This skill turns your AI agent into a Y Combinator office hours partner to pressure-test product ideas. It enforces a strict rule against writing code and outputs a design doc. Claude Code CX Codex Cursor +1 300installs hugging-science K-Dense-AI A skill to find and evaluate scientific datasets, models, and interactive demos via the Hugging Science catalog. Use it when you need an ML resource for biology, chemistry, genomics, materials science, climate, or physics. Claude Code CX Codex Cursor +1 1,800installs ginkgo-cloud-lab K-Dense-AI Assists with protocol selection, input files, pricing checks, and orders for Ginkgo Bioworks Cloud Lab. Useful for RNA synthesis and automated protein expression. Claude Code CX Codex Cursor +1 1,800installs primekg K-Dense-AI Wraps the PrimeKG precision-medicine CSV in pandas helpers, so the agent can look up typed nodes, neighbours, disease summaries and short paths without leaving the repo. Claude Code CX Codex Cursor +1 1,800installs library-curator nexu-io Pulls images, logos and screenshots out of the OD Library and copies the file into your project, handing back a relative path you can drop into markup. Claude Code CX Codex Cursor +1 951installs debug-mantra thananon Sets a debugging sequence from reproducing a failure through testing hypotheses and recording experiments. Use it for errors, logs, and stack traces. Claude Code CX Codex Cursor +1 4,800installs langchain-fundamentals langchain-ai Guides LangChain agent work with create_agent(), tools, and middleware. Use it when you need saved conversation state, approval flows, or error handling. Claude Code CX Codex Cursor +1 17,400installs atlassian-mcp https://github.com/Jeffallan Skill connects Jira and Confluence to Claude Code, Cursor, and other editors through MCP protocol. Query tasks with JQL, create tickets, search and edit wiki pages directly from your IDE. Claude Code CX Codex Cursor +1 4,400installs the-fool https://github.com/Jeffallan Challenges plans, architectures, and decisions using five structured reasoning modes. Useful for spotting blind spots and failure modes before writing code. Claude Code CX Codex Cursor +1 4,400installs spec-miner https://github.com/Jeffallan A skill for reverse-engineering codebases. Extracts specifications from existing code, maps dependencies, and generates documentation for legacy and undocumented systems. Claude Code CX Codex Cursor +1 4,400installs security-review getsentry Finds injections, XSS, authorization flaws, and other vulnerabilities in code. Reports only high-confidence findings. Claude Code CX Codex Cursor +1 21,100installs sprites-and-images phaserjs Guides agents on creating Sprite and Image objects in Phaser 4. Explains factory methods, texture frames, mixin components, and visual transforms. Claude Code CX Codex Cursor +1 1,100installs mobile-app-ui-design ceorkm Provides mobile UX and UI guidelines for coding agents. Helps generate mobile screens, components, and design flows that follow structured layout rules. Claude Code CX Codex Cursor +1 11,500installs ads-test AgriciDaniel Walks a paid-media experiment from hypothesis to readout: randomization unit, sample size, stopping rule, and a plain-language decision. Claude Code CX Codex Cursor +1 3,600installs hud Yeachan-Heo The hud skill configures a HUD display in Claude Code's statusline, showing git branch, context usage, running subagents, and other metrics. Track session state and keep tabs on complex work without losing context. Claude Code CX Codex Cursor +1 1,100installs langgraph-human-in-the-loop langchain-ai Skill for building LangGraph workflows that pause and wait for human input. Use it to show agent output, request approval, or validate user responses before continuing. Claude Code CX Codex Cursor +1 17,200installs social-publishing ndesv21 Publishes and schedules posts across 13 social networks through the SocialClaw API with a single key. Useful for running multi-platform campaigns without handling OAuth for each service. Claude Code CX Codex Cursor 3,600installs e2e tester-army Writes, runs, and debugs web and mobile end-to-end tests with the e2e test runner, combining agent goals with exact Playwright assertions and device checks. Claude Code CX Codex Cursor +1 1,200installs agentic-actions-auditor trailofbits Inspects GitHub Actions workflows for prompt injection risks and insecure AI agent setups. Catches attacker inputs leaking into prompts via event contexts or environment variables. Claude Code CX Codex Cursor +1 6,700installs post-mortem thananon Skill writes an engineering post-mortem after debugging: root cause with code identifiers, symptom, mechanism, the fix, and why it slipped through. Use after validation, before closing the ticket. Claude Code CX Codex Cursor +1 4,700installs zod-4 prowler-cloud Provides validation patterns for Zod 4 and guides migration from Zod 3. It helps write schemas for forms, API payloads, and adapters. Claude Code CX Codex Cursor +1 1,200installs legacy-modernizer https://github.com/Jeffallan Plans incremental legacy-code migration from dependency maps to facades, flags, and rollback steps. Use it when splitting a monolith or upgrading technology without a wholesale replacement. Claude Code CX Codex Cursor +1 4,300installs salesforce-developer https://github.com/Jeffallan Writes Apex classes, builds Lightning Web Components, optimizes SOQL queries, and sets up batch processing on Salesforce. Enforces governor limits and bulkifies code. Claude Code CX Codex Cursor +1 4,300installs mathmodel-figure-templates jihe520 Runs packaged Python and matplotlib scripts to generate publication-grade scientific figures. Useful when you need Taylor diagrams, ROC curves, or correlation grids quickly. Claude Code CX Codex Cursor +1 1,700installs gh-cli trailofbits A skill that redirects GitHub requests from curl and fetch to authenticated gh CLI for repositories, pull requests, and issues. Use it for private repos and higher API limits. Claude Code CX Codex Cursor +1 6,600installs html-diagram plannotator Generates standalone interactive HTML diagrams without external services or build steps. Helps visualize component topology, state transitions, timelines, and quantitative structures. Claude Code CX Codex Cursor +1 4,100installs visual-pr humanlayer A skill that automates pull request descriptions: reads the diff, gathers context, and fills a template so reviewers understand why the change exists and how it's shaped. Claude Code CX Codex Cursor +1 3,000installs zustand vercel-labs This skill integrates Zustand into json-render to sync application state. Use it when your project already relies on Zustand and you need to connect it with components rendered by json-render. Claude Code CX Codex Cursor +1 1,900installs office-productivity sickn33 A wrapper skill that walks the agent through seven phases of office work: documents, spreadsheets, slide decks, format conversion. Claude Code CX Codex Cursor +1 1,600installs firebase sickn33 Guides Firebase architecture, Firestore security rules, and Cloud Functions based on read-heavy query patterns and pricing limits. Claude Code CX Codex Cursor +1 1,600installs tailwind-design-system sickn33 A skill that keeps the agent on Tailwind while you build a design system: tokens, component variants, responsive patterns, accessibility. Useful when the UI drifts. Claude Code CX Codex Cursor +1 1,600installs copywriting sickn33 Skill for writing clear, conversion-focused marketing copy for landing pages and emails. Forces you to understand audience and context first, blocks fabricated claims and statistics. Claude Code CX Codex Cursor +1 1,600installs prompt-engineer sickn33 Transforms unstructured prompts into structured prompts using frameworks like RTF, RISEN, and Chain of Thought. Helpful when a task needs clearer instructions. Claude Code CX Codex Cursor +1 1,600installs gateway-workers cloudflare Skill for building, debugging, and reviewing Cloudflare Workers triggered by Forward actions in Gateway HTTP policies. Work with GatewayMiddleware, context types, and request continuation. Claude Code CX Codex Cursor +1 7,700installs workflow Vercel Inc. Builds durable, resumable tasks with the Vercel Workflow SDK when operations must survive server restarts or pause for external events. Claude Code CX Codex Cursor +1 5,300installs mcp-developer https://github.com/Jeffallan A skill for building and debugging MCP servers and clients in TypeScript or Python, with tool schemas, transport setup and protocol checks in the inspector. Claude Code CX Codex Cursor +1 4,200installs