Open-Source Cowork Agent Skills Collection | High Quality for Exceptional Productivity
Skill Claude CodeCodex
Toolkit for interacting with and testing local web applications using Playwright. Supports verifying frontend functionality, debugging UI behavior, capturing browser screenshots, and viewing browser logs.
Skill Claude CodeCodex
Guide for creating high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK).
Skill Claude CodeCodex
Maintain this repository's Mintlify documentation from uploaded Markdown files. Use when asked to add, update, or organize docs pages in docs/, place new content under getstarted, core, core/models, or troubleshooting, and keep docs/docs.json navigation in sync with new pages.
Skill Claude CodeCodex
Perform a direct five-axis code review across correctness, security, performance, readability, and maintainability. Use when the user asks for /review, PR review, security review, pre-merge review, production readiness review, or blocking issue assessment.
Skill Claude CodeCodex
Plan launch readiness, staged rollouts, production monitoring, rollback, communications, and post-launch validation. Use when the user asks for /ship, pre-launch checklists, release readiness, staged rollout plans, feature flags, deployment monitoring, or rollback planning.
Skill Claude CodeCodex
Guide for creating effective skills. This skill should be used when users want to create a new skill (or update an existing skill) that extends Claude's capabilities with specialized knowledge, workflows, or tool integrations.
Skill Claude CodeCodex
Write a comprehensive product or engineering specification before implementation. Use when the user asks for /spec, PRDs, feature specs, API specs, refactor specs, acceptance criteria, user stories, edge cases, or open decision tracking before code is written.
Skill Claude CodeCodex
A set of resources to help me write all kinds of internal communications, using the formats that my company likes to use. Claude should use this skill whenever asked to write some sort of internal communications (status reports, leadership updates, 3P updates, company newsletters, FAQs, incident reports, project…
Skill Claude CodeCodex
General workflow for auditing ML CI failures, experiment regressions, training run failures, golden metric failures, and telemetry-backed ML work-product claims from local repositories, logs, metrics, configs, and artifacts. Use when Codex needs to decide whether an ML failure is a model/convergence issue, correctness…
Skill Claude CodeCodex
Transform git commit history into polished user-facing changelogs and release notes. Use when the user wants a CHANGELOG.md from a version tag or date range, weekly product updates, app store release notes, or Keep a Changelog formatted output with internal noise filtered out.
Skill Claude CodeCodex
Creating algorithmic art using p5.js with seeded randomness and interactive parameter exploration. Use this when users request creating art using code, generative art, algorithmic art, flow fields, or particle systems. Create original algorithmic art rather than copying existing artists' work to avoid copyright…
Skill Claude CodeCodex
Create beautiful visual art in .png and .pdf documents using design philosophy. You should use this skill when the user asks to create a poster, piece of art, design, or other static piece. Create original visual designs, never copying existing artists' work to avoid copyright violations.
Skill Claude CodeCodex
Edits raw travel footage into polished Instagram Reels (9:16, 1080×1920) with cinematic color grading, beat-synced cuts, text overlays, transitions, and background music. Use when the user mentions editing a reel, travel reel, Instagram video, cutting footage, travel clips, reel from footage, or provides folders with…
Skill Claude CodeCodex
Create videos programmatically using React (Remotion) or generate mathematical/conceptual animations (Manim). Use when the user asks to make a video, animation, product demo, tutorial, social clip, or branded video pipeline. Triggers: /remotion-video, /video-animation, /video-toolkit.
Skill Claude CodeCodex
Knowledge and utilities for creating animated GIFs optimized for Slack. Provides constraints, validation tools, and animation concepts. Use when users request animated GIFs for Slack like "make me a GIF of X doing Y for Slack.".
Skill Claude CodeCodex
Design, analyze, and document A/B tests for conversion, onboarding, pricing, lifecycle, and product experiments. Use when the user asks for /ab-test-setup, experiment design, sample size, statistical significance, A/B test analysis, ICE-scored test backlogs, or avoiding common testing mistakes.
Skill Claude CodeCodex
Write marketing copy for pages, campaigns, product launches, ads, and email sequences. Use when the user asks for /copywriting, landing page copy, launch copy, ad variations, direct-response frameworks, AIDA, PAS, BAB, or refreshing existing marketing content.
Skill Claude CodeCodex
Detect and rewrite AI writing patterns to make content sound authentically human. Supports voice calibration from the author's own writing samples. Use when asked to humanize text, remove AI patterns, calibrate voice, audit content for AI detectability, or check if writing sounds like ChatGPT. Triggers: /humanize…
Skill Claude CodeCodex
Automates the process of posting to an already logged-in Instagram account using a browser-capable agent. Use this skill when the user requests to post, upload, publish, or share a video or image to Instagram with provided content and tags.
Skill Claude CodeCodex
Generate tailored SaaS and product marketing ideas across organic, paid, community, partnerships, product-led growth, retention, and launch channels. Use when the user asks for /marketing-ideas, marketing brainstorms, launch ideas, channel ideas, growth tactics, or a prioritized marketing plan.
Skill Claude CodeCodex
Audit technical, on-page, and AI-search SEO for pages, sites, and content. Use when the user asks for /seo-audit, /ai-seo, SEO review, keyword targeting, heading structure, metadata, internal linking, content gaps, AEO, GEO, LLMO, or competitor SEO comparisons.
Skill Claude CodeCodex
Full legal plugin suite for commercial contract review, privacy/DPA analysis, and AI governance vendor reviews. Use when the user invokes /commercial-legal:review, /privacy-legal:dpa-review, /ai-governance-legal:vendor-ai-review, renewal tracking, DSAR responses, or EU AI Act triage.
Skill Claude CodeCodex
Review contracts with clause-by-clause risk scoring, market benchmarks, negotiability ratings, and redline suggestions. Use when the user pastes an NDA, SaaS/MSA, M&A LOI, or payment agreement and wants a Contract Safety Score, CUAD-based risk breakdown, or /review as [position] analysis.
Skill Claude CodeCodex
Guide users through a structured workflow for co-authoring documentation. Use when user wants to write documentation, proposals, technical specs, decision docs, or similar structured content. This workflow helps users efficiently transfer context, refine content through iteration, and verify the doc works for readers.…
At most 3 mods per repository are shown here, and a mod shipped inside a plugin is left to that plugin's page — the rest are on their repository pages: