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

difit yoshiko-pg skill Starts a local difit viewer with your changes and asks you for the review. Whatever you type in the browser comes back to the agent on stdout. Claude Code CX Codex Cursor +1 2,200installs handoff thedotmack skill Generates a structured HANDOFF.md with goals, failed attempts, and next steps. Use it when context degrades or when starting a fresh session. Claude Code CX Codex Cursor +1 344installs pinned-comment charlie947 skill Creates a LinkedIn pinned comment and an image prompt in the author’s voice. Use it when a post needs a restrained, self-deprecating aside. Claude Code CX Codex Cursor +1 1,300installs dart-use-pattern-matching dart-lang skill A skill that tells the agent how to use Dart 3 patterns, switch expressions and destructuring on real code: JSON, sealed classes, path segments. Claude Code CX Codex Cursor +1 18,700installs obsidian-canvas-creator axtonliu skill Turns text into a JSON Canvas file that Obsidian opens as an interactive board. Choose a radial mind map or a freeform layout with grouped zones. Claude Code CX Codex Cursor +1 2,000installs firecrawl-build-scrape firecrawl skill This skill guides integration of Firecrawl /scrape into product code for single-page extraction. It applies when an app has a known URL and needs markdown, HTML, or metadata. Claude Code CX Codex Cursor +1 61,600installs prek j178 skill Guides agents in configuring and running Git hooks with prek, a Rust alternative to pre-commit. Useful when you need speed, workspace support, or native TOML configuration. Claude Code CX Codex Cursor +1 728installs dart-resolve-package-conflicts dart-lang skill Skill for resolving Dart package version conflicts when pub get fails. Teaches how to audit dependencies, update packages within constraints, and surgically remove entries from the lockfile. Claude Code CX Codex Cursor +1 18,600installs firecrawl-build-search firecrawl skill A skill that shows an agent how to wire Firecrawl search into a product, so a query finds candidate pages before anything gets read. Claude Code CX Codex Cursor +1 61,500installs testing-setup Google LLC skill Analyzes your Android app's testing strategy and installs libraries, infrastructure, and frameworks for unit tests, UI tests, screenshot tests, and end-to-end tests. Claude Code CX Codex Cursor +1 2,500installs system-info agno skill A skill with two scripts that tell the agent which host it runs on and what sits in a folder. Useful before you trust any path it prints. Claude Code CX Codex Cursor +1 302installs geometry-and-math phaserjs skill This skill provides access to Phaser 4 utilities for vectors, rectangles, circles, and polygons. Use it for distance and angle calculations, collision detection, and generating random points inside shapes. Claude Code CX Codex Cursor +1 803installs skill-creator tldraw skill A guide the agent follows while building a skill: what belongs in SKILL.md, what goes into scripts/, references/ and assets/, and how to keep the whole thing short. Claude Code CX Codex Cursor +1 431installs ai-visibility-audit every-app skill Reads how a brand shows up in AI answers about its market, then hands back a short report with the one to three fixes most likely to earn a mention or a citation. Claude Code CX Codex Cursor +1 848installs firecrawl-build-interact firecrawl skill A coding-agent skill that gets Firecrawl /interact into product code when a page has to be clicked, filled in or paged through before you can read it. Claude Code CX Codex Cursor +1 61,200installs firecrawl-build-onboarding firecrawl skill Skill fetches Firecrawl credentials and sets up the SDK in your project via built-in browser authentication. Use when your app needs FIRECRAWL_API_KEY or you're adding Firecrawl to .env. Claude Code CX Codex Cursor +1 61,200installs statistical-power K-Dense-AI skill Calculates how many observations your study needs to reliably detect a meaningful effect. Supports protocol planning, grant submissions, and pre-registration — from basic t-tests to complex mixed models and survival analysis. Claude Code CX Codex Cursor +1 1,300installs cli-anything-notebooklm HKUDS skill Experimental harness to manage Google NotebookLM through a local CLI. It lets agents list notebooks, query sources, generate artifacts, and download files. Claude Code CX Codex Cursor +1 801installs write-e2e-tests tldraw skill Guides Playwright E2E testing for tldraw, including UI actions, menus, and canvas shapes. Use it when adding coverage for SDK examples or the tldraw.com client. Claude Code CX Codex Cursor +1 430installs rust-skills leonardomso skill A Rust rulebook the agent reads before it writes: 265 rules in 26 categories. Useful when you review a module or fight the borrow checker. Claude Code CX Codex Cursor +1 6,400installs game-object-components phaserjs skill Reference guide for Phaser 4 game object components and mixins. Helps coding agents handle Transform, Depth, and WebGL effects accurately. Claude Code CX Codex Cursor +1 796installs autonomous-agents sickn33 skill A skill about building autonomous agents that stay reliable: ReAct and plan-execute loops, goal decomposition, reflection, and the math of compounding step failures. Claude Code CX Codex Cursor +1 1,200installs code-refactoring-refactor-clean sickn33 skill Analyzes code smells and plans stepwise refactoring based on SOLID and clean code principles. Helps clean tangled modules before introducing new features. Claude Code CX Codex Cursor +1 1,200installs blockchain-developer sickn33 skill This skill guides smart contract, Web3 application, and decentralized-system work. Use it for design, reviews, and transaction checks before any on-chain action. Claude Code CX Codex Cursor +1 1,200installs production-code-audit sickn33 skill Skill for systematic code review covering security flaws, logic errors and performance issues before deployment. Identifies specific problems, proposes fixes and validates them. Claude Code CX Codex Cursor +1 1,200installs ai-prompt-research every-app skill This skill discovers questions people ask ChatGPT about your niche, shows how the model answers them, and reveals which sites it cites. Learn where your brand appears in AI responses and where competitors show up instead. Claude Code CX Codex Cursor +1 837installs groups-and-containers phaserjs skill A Phaser 4 skill covering Group, Container and Layer, object pooling and nested transforms, so you stop guessing how to organise sprites. Claude Code CX Codex Cursor +1 790installs huggingface-papers huggingface skill Pulls the paper ID out of a Hugging Face or arXiv link, reads the page as markdown, and fetches authors, models and datasets from the papers API. Claude Code CX Codex Cursor +1 2,200installs huggingface-llm-trainer huggingface skill Runs language and vision model fine-tuning on Hugging Face Jobs with TRL or Unsloth and converts checkpoints to GGUF without local GPUs. Claude Code CX Codex Cursor +1 2,200installs dart-generate-test-mocks dart-lang skill A Dart testing skill: the agent injects external services through constructors, generates mock classes with mockito and build_runner, then writes the unit test. Claude Code CX Codex Cursor +1 18,200installs weekly-review cursor skill This skill pulls your commits from the past 7–10 days, groups them by work type, and produces a brief report for status updates and retrospectives. Requires a configured git with email set. Claude Code CX Codex Cursor +1 2,400installs control-ui cursor skill Inspects and tests local web, IDE, or Electron interfaces via browser automation and CDP. Captures screenshots, traces, and verifies UI changes without extra dependencies. Claude Code CX Codex Cursor +1 2,400installs fix-ci cursor skill This skill finds failed PR checks, examines logs, and guides small fixes. Use it when branch or pull request CI is failing. Claude Code CX Codex Cursor +1 2,400installs control-cli cursor skill Builds a local harness to drive, test, and profile interactive CLI or TUI tools. Catches UI regressions, memory leaks, and hangs without third-party services. Claude Code CX Codex Cursor +1 2,400installs cron-schedule ruvnet skill Schedules background worker runs via CronCreate during an active session. Useful for recurring security audits, test gap reviews, and codebase mapping. Claude Code CX Codex Cursor +1 902installs time-and-timers phaserjs skill Guides AI agents on configuring Clock, TimerEvent delays, loops, and Timelines in Phaser 4. Useful when scripting game loops. Claude Code CX Codex Cursor +1 786installs react-email vercel-labs skill Turns JSON email specs into HTML or plain-text output with React Email. Use it for email catalogs, generated specs, and transactional message templates. Claude Code CX Codex Cursor +1 1,400installs vue vercel-labs skill A skill to convert JSON specifications into Vue 3 components with data binding, visibility conditions, and action handling. Use it if you generate interfaces via AI or build UIs from JSON. Claude Code CX Codex Cursor +1 1,400installs iot-firmware ruvnet skill Orchestrates firmware rollouts across fleets using canary deployments and anomaly gates. Helpful when shipping updates to connected hardware without risking outages. Claude Code CX Codex Cursor +1 900installs nitro Anthony Fu skill A skill with Nitro v3 references: file-based routing, route rules, caching, storage and deployment presets. Use it when the agent edits nitro.config or writes H3 handlers. Claude Code CX Codex Cursor +1 2,600installs