Codex skills, plugins, subagents, slash commands and mcp servers

team Yeachan-Heo skill Coordinates several agents through a shared task list and assigns work by stage. Use it when a larger task needs parallel execution and review. Claude Code Cursor GitHub Copilot 878installs swiftdata-pro Paul Hudson skill A skill for writing, reviewing, and improving SwiftData code with modern APIs and best practices. Essential when working with SwiftData-based projects in Swift. Claude Code Cursor GitHub Copilot 9,200installs loop-library Forward-Future skill A legacy compatibility alias for Loopy that detects recurring tasks, audits execution loops, and structures automated workflows with clear stopping points. Claude Code Cursor GitHub Copilot 2,400installs nextflow K-Dense-AI skill Guides your AI agent in writing, running, and debugging Nextflow DSL2 pipelines and nf-core workflows on HPC or cloud runners. Claude Code Cursor GitHub Copilot 1,400installs pathway-enrichment K-Dense-AI skill Runs pathway and gene-set enrichment analysis on gene lists or ranked data, finds over-represented GO terms, KEGG, Reactome, MSigDB. Needed after differential expression, CRISPR screens, or clustering. Claude Code Cursor GitHub Copilot 1,400installs bulk-rnaseq K-Dense-AI skill Prepares bulk RNA-seq reads, Salmon, and STAR outputs into validated gene-level count matrices for differential expression in PyDESeq2. Claude Code Cursor GitHub Copilot 1,400installs pacsomatic K-Dense-AI skill Prepares a matched tumor-normal run of nf-core/pacsomatic on PacBio HiFi data: builds the samplesheet, writes launch artifacts, submits the Nextflow driver to a scheduler. Claude Code Cursor GitHub Copilot 1,400installs two-factor-authentication-best-practices better-auth skill Walks an agent through adding two-factor auth to a Better Auth app: TOTP, codes by email or SMS, backup codes, trusted devices. Claude Code Cursor GitHub Copilot 34,200installs huggingface-datasets huggingface skill Guides Dataset Viewer API work for inspecting Hugging Face datasets, rows, statistics, and parquet links. Use it when an agent needs read-only dataset exploration. Claude Code Cursor GitHub Copilot 2,400installs fuzzing-dictionary trailofbits skill Generates and connects token dictionaries for parsers and protocols in libFuzzer or AFL++ when coverage stalls on initial checks. Claude Code Cursor GitHub Copilot 5,300installs semgrep-rule-variant-creator trailofbits skill Ports completed Semgrep rules to selected languages and creates separate rule and test directories. Use it when you already have a rule to adapt. Claude Code Cursor GitHub Copilot 5,300installs fuzzing-obstacles trailofbits skill Patches anti-fuzzing patterns like checksums and time-seeded PRNGs in C, C++, and Rust. Useful when fuzzers get stuck on early validation checks. Claude Code Cursor GitHub Copilot 5,300installs Agent Cost Report thedotmack skill Turns Claude Code transcripts into a cost and failure report: tokens measured, dollars priced at OpenRouter list rates, output as HTML, PDF, JSON and CSV. Claude Code Cursor GitHub Copilot 365installs lint-and-validate sickn33 skill Runs configured linters and type checkers after code changes, telling actual failures apart from tools that never ran. Claude Code Cursor GitHub Copilot 1,300installs architect-review sickn33 skill Turns the agent into an architecture reviewer: it weighs design decisions, names the risks and tradeoffs, and asks for a validation plan. Claude Code Cursor GitHub Copilot 1,300installs langgraph sickn33 skill A skill for building production-grade agents with deliberate structure. Design graph topology, manage state, add cycles and branches, persist progress via checkpoints, and loop humans back into decisions. Claude Code Cursor GitHub Copilot 1,300installs vulnerability-scanner sickn33 skill Guides AI agents through vulnerability assessments using OWASP 2025 standards and attack surface mapping. Useful during pre-release security reviews. Claude Code Cursor GitHub Copilot 1,300installs ai-engineer sickn33 skill A skill that puts the agent in the role of an LLM engineer, then works from success metrics to RAG pipelines, agent orchestration and the production plumbing around them. Claude Code Cursor GitHub Copilot 1,300installs radix-ui-design-system sickn33 skill Builds accessible design systems and headless UI components with Radix UI primitives. Useful for custom component libraries and WCAG 2.1 compliance. Claude Code Cursor GitHub Copilot 1,300installs typescript-advanced-types sickn33 skill Teaches the agent generics, conditional and mapped types in TypeScript, and stays honest about where type checking stops. Claude Code Cursor GitHub Copilot 1,300installs particles phaserjs skill A Claude Code skill that shows the agent how to build particle effects in Phaser 4: emitters, emission zones, gravity wells, value formats. Useful when sparks and smoke have to become actual code. Claude Code Cursor GitHub Copilot 859installs refero-design referodesign skill A research-led skill for UI and product design that grounds work in references before code. Use it for landing pages, product screens, redesigns, and visual polish. Claude Code Cursor GitHub Copilot 11,900installs marimo-pair marimo-team skill Connects an agent to a live marimo notebook runtime to inspect variables and commit cell updates safely. Claude Code Cursor GitHub Copilot 12,600installs project-session-manager Yeachan-Heo skill Automates creation of separate git worktrees for each task, PR, or feature, with optional tmux session orchestration. Work on multiple branches in parallel without conflicts. Claude Code Cursor GitHub Copilot 861installs physics-arcade phaserjs skill Skill for Arcade Physics in Phaser 4: world setup, velocity and acceleration, gravity, collision and overlap detection. Helps AI assistants guide you through game object dynamics. Claude Code Cursor GitHub Copilot 852installs laravel-best-practices laravel skill Indexes Laravel backend conventions for models, migrations, queues, and queries. It enforces existing codebase patterns before introducing new abstractions. Claude Code Cursor GitHub Copilot 2,100installs preline-theme-generator htmlstreamofficial skill Generates custom Preline UI theme CSS from brand colors or mood descriptions. Runs entirely through local scripts after install. Claude Code Cursor GitHub Copilot 1,300installs visual-edit-precision Adit Jain skill Skill for targeted UI changes when you show elements on a screenshot or point them out in code. Edits only what you selected, without refactoring the entire component. Claude Code Cursor 2,800installs session-guard Adit Jain skill session-guard monitors long sessions and rule drift. Use it for multi-step tasks or after a context compaction event. Claude Code Cursor 2,800installs cancel Yeachan-Heo skill Skill to gracefully stop active OMC modes (autopilot, ralph, ultragoal, swarm, and others) with state cleanup. The standard way to exit any mode while preserving artifacts for resume. Claude Code Cursor GitHub Copilot 854installs wp-plugin-development WordPress skill This skill guides WordPress plugin work, from project structure and hooks to admin settings, security checks and release packaging. Claude Code Cursor GitHub Copilot 7,900installs substrate-vulnerability-scanner trailofbits skill Scans Substrate and Polkadot pallets for 7 critical vulnerabilities such as panic DoS and integer overflow. Useful when auditing FRAME runtimes before mainnet launch. Claude Code Cursor GitHub Copilot 5,200installs atheris trailofbits skill Guides setup of coverage-guided fuzzing for Python code and C extensions with Atheris. Use it to investigate crashes and memory corruption. Claude Code Cursor GitHub Copilot 5,200installs ossfuzz trailofbits skill Guides your AI agent through enrolling projects in Google OSS-Fuzz and running fuzzer targets locally with helper scripts. Claude Code Cursor GitHub Copilot 5,200installs devcontainer-setup trailofbits skill Creates a sandboxed devcontainer with Claude Code, persistent volumes, and tooling for Python, Node, Rust, or Go. Helpful when setting up isolated development workspaces. Claude Code Cursor GitHub Copilot 5,200installs dwarf-expert trailofbits skill Inspects DWARF debug sections in compiled binaries, verifies DIE trees, and assists with parsers. Handy when analyzing compiled code. Claude Code Cursor GitHub Copilot 5,200installs libfuzzer trailofbits skill A skill that walks the agent through libFuzzer: the harness, the -fsanitize=fuzzer build, corpus handling, campaign triage. For C/C++ built with Clang. Claude Code Cursor GitHub Copilot 5,200installs second-opinion trailofbits skill Runs external CLI code reviews via Codex or Antigravity. It inspects dirty working trees, branch diffs, and specific commits without editing files. Claude Code Cursor GitHub Copilot 5,200installs image vercel-labs skill Turns JSON specs into SVG and PNG images via Satori. Useful for generating OG images, social cards, and rendering AI-generated image specs. Claude Code Cursor GitHub Copilot 1,500installs shipping-artifacts phuryn skill Generates core documentation to make vibe-coded applications reviewable before release. It maps architecture, permission flows, and test coverage for audits. Claude Code Cursor GitHub Copilot 1,700installs