Skills
98,284 packaged capabilities and playbooks for agents. Install any of them with one command.
Development
Use when working with the `dotenvx` env-var management tool — encrypting .env files, juggling multiple environments (.env.production / .env.staging / .env.ci), committing encrypted secrets to git with `.env.vault` / `.env.keys` / `.env.encrypted`, or wiring dotenvx into GitHub Actions. Trigger on `.env.vault` / `.env.keys` / `dotenvx` commands or symptoms (env-var leak risk, env per-stage management, encrypted secrets workflow) even if the user does not say "dotenvx" by name.
Digital signal processing algorithms and techniques for real-time audio. Covers filter design (biquad, Moog ladder, SVF, FIR, Linkwitz-Riley), audio effects (delay, reverb, dynamics, modulation, distortion, stereo processing), sound synthesis (oscillators, bandlimited waveforms, FM/PM, noise generation, envelopes), spectral analysis (FFT, envelope detection, beat detection), and DSP utilities (fast math, interpolation, denormal prevention, dithering). Use this skill whenever implementing audio DSP in C/C++, building synthesizers or effects, writing filter code, generating waveforms, or any task involving digital audio processing — even if the user doesn't explicitly mention "DSP."
Development workflow, debugging, and troubleshooting for Electrobun desktop applications. This skill covers debugging the main process (Bun) and webview processes, Chrome DevTools integration, console logging strategies, error handling, performance profiling, memory leak detection, build error troubleshooting, common runtime errors, development environment setup, hot reload configuration, source maps, breakpoint debugging, network inspection, WebView debugging on different platforms, native module debugging, and systematic debugging approaches. Use when encountering build failures, runtime errors, crashes, performance issues, debugging RPC communication, inspecting webview DOM, profiling CPU/memory usage, troubleshooting platform-specific issues, or setting up development workflow. Triggers include "debug", "error", "crash", "troubleshoot", "DevTools", "inspect", "breakpoint", "profiling", "performance issue", "build error", "not working", or "logging".
Helps users integrate and use element-ai-vue components to build AI chat interfaces, Markdown rendering, code highlighting, typewriter effects and other AI interaction features. Triggers when the user mentions AI chat, conversation interfaces, Markdown display, code highlighting, chain of thought, message bubbles, file upload in chat, or any specific component name of element-ai-vue (such as ElAMarkdown, ElABubble, ElASender, ElAThinking, ElATypewriter, etc.). Also use this skill when the user is working in the element-ai-vue project itself and wants to add or modify components. Make sure to proactively use this skill whenever the user mentions any need related to AI conversation, chat interfaces, typewriter effects, Markdown rendering, or display of the thinking process.
Configure email verification, implement password reset flows, set password policies, and customise hashing algorithms for Better Auth email/password authentication. Use when users need to set up login, sign-in, sign-up, credential authentication, or password security with Better Auth.
Backlog triage protocol for Engram: audit open issues and PRs, classify each item, infer maintainer ideology from comments, and produce an actionable disposition report. Trigger: Auditing open issues or PRs, triaging the backlog, reviewing contributor submissions as a maintainer, or applying triage to any GitHub repo.
Integrate or repair RevenueCat and Superwall together in an Expo React Native app. Use for their shared purchase ownership, Android offer selection, billing identity, entitlement sync, restore, or migration flows; not for web billing or unrelated paywall providers.
Use when designing, writing, or reviewing adapters for external APIs, ERP systems, payment providers, storage providers, or third-party services. Covers boundary contracts, typed clients, retries, timeouts, pagination, error normalization, observability, and tests. Do not use for pure internal domain logic with no external service boundary.
Elite reasoning and coding discipline distilled from Claude Fable 5's problem-solving patterns. Load at the START of any non-trivial task — debugging, implementing features, refactoring, architecture decisions, code review, or multi-step investigations. Raises reasoning quality by enforcing hypothesis-driven thinking, evidence-based claims, calibrated effort, root-cause fixes, and adversarial self-verification. Triggers on - "debug", "fix", "implement", "build", "refactor", "why is this failing", "design", "investigate", or any task where being wrong is expensive.
Create or update AGENTS.md after code generation or an overall task is complete. Use this skill when you have finished writing code (adding components, changing logic, refactoring files), or when the user mentions "update docs", "update AGENTS", or "create AGENTS". Even if the user does not explicitly mention AGENTS.md, whenever you have just modified a code file you should check whether the documentation needs to be updated to match.
Provides domain knowledge and guidance for Flare Confidential Compute (FCC) and TEE extensions—how confidential extensions run inside a Trusted Execution Environment, the on-chain TeeExtensionRegistry and TeeMachineRegistry, the InstructionSender contract pattern, the OPType/OPCommand routing model, the instruction lifecycle, the extension action handler, attestation, and reproducible builds. Use when building, deploying, or reasoning about Flare confidential extensions, TEE machines, FCC, confidential compute, the fce-extension-scaffold, the fce-sign signing example, the fce-weather-insurance example, Confidential Space VMs, code-hash attestation, parametric insurance on TEE, or registering a TEE on Coston/Coston2.
Comprehensive Flutter development guidelines covering architecture, state management, performance optimization, testing, and cross-platform best practices. Use when building, refactoring, or reviewing Flutter applications for mobile, web, and desktop platforms. Covers widget patterns, Riverpod/BLoC state management, navigation with go_router, Firebase integration, platform channels, custom painting, animations, CI/CD, and production deployment.
Use this skill whenever inspecting, interacting with, or live-editing a running Flutter app via the Flutter MCP toolkit server (`mcpServers` key **`flutter-mcp-toolkit`**, or legacy **`flutter-inspector`**). Covers preflight, snapshot/tap/enter/scroll loop, hot-reload validation, and error envelope parsing.
Create distinctive, production-grade frontend interfaces with high design quality. Use this skill when the user asks to build web components, pages, artifacts, posters, or applications (examples include websites, landing pages, dashboards, React components, HTML/CSS layouts, or when styling/beautifying any web UI). Generates creative, polished code and UI design that avoids generic AI aesthetics
Plan and implement conversions between game meshes, SDFs, voxels, images, contours, and smooth curves while preserving enough gameplay and rendering data. Use when repairing meshes, extracting meshes from fields, voxelizing geometry, contouring, denoising voxel data, generating LODs, or moving geometry between representations.
Detect host inventory and effective CPU, memory, disk, scheduler, container, and accelerator limits when a user asks for resource-aware planning or before a clearly resource-sensitive local workload. Produces a redacted JSON snapshot and conservative planning helpers without stress tests or assuming visible host hardware is usable.
Use when stale git branches pile up after pull requests merge—local branches marked [gone], squash-merged branches that `git branch --merged` does not list, or leftover remote branches in a repo without auto-delete. Also use when the user names branches to purge, or asks to clean up, prune, or purge branches.
Master advanced Git workflows—including rebasing, cherry-picking, bisect, worktrees, and reflog—to maintain clean history and recover from any situation. Use when managing complex Git histories, collaborating on feature branches, or troubleshooting repository issues.
Stateless Cursor goal loop: grill, plan, implement, gather acceptance evidence, and review one verifiable outcome using in-chat execution context. Use when the user wants a feature or outcome built end to end. Nested under /just-do-it when that parent owns shipping.
Keep iterating on code changes until the tests pass, the build succeeds, or linting is clean. Runs in a tight loop of fix → run → check → repeat. Use when you want the agent to autonomously grind through test failures or build errors.
Connects to Oxylabs remote headless browsers over the Chrome DevTools Protocol (CDP) with Playwright or Puppeteer. Built-in anti-detection, residential proxies, geo-targeting, persistent sessions and profiles, session recording and live VNC inspection for debugging. Use instead of WebFetch or a local browser whenever a site renders with JavaScript, blocks bots (DataDome, Cloudflare, Akamai), needs a real browser session, screenshots or PDFs. Covers connection, retries, error recovery and safe scraping of protected targets without any human help.
Set up and maintain hk git hook manager in any repository. Use when adding pre-commit hooks, configuring linters, setting up code quality automation, working with hk.pkl, or maintaining existing hook configurations. Triggers on tasks involving hk, git hooks, pre-commit checks, commit-msg validation, or linting pipelines.
Reference skill for building high-end interactive 3D websites (WebGL hero scenes, scroll-driven camera moves, product-style renders) using Three.js, React Three Fiber, drei, and GSAP ScrollTrigger — including retrofitting 3D into an existing site (restyle/redesign) without breaking its current routes, content, or accessibility. Use when the user wants to build, restyle, review, or debug a 3D/WebGL web experience — hero canvases, scroll-jacked sections, particle fields, instanced objects, hub/navigation scenes, or performance issues in a Three.js/R3F scene, on a new or existing project. Complements the frontend-design skill: frontend-design covers general UI/UX craft (layout, color, accessibility), this skill covers the 3D/WebGL implementation layer.
Composable transformations of Python+NumPy programs. Differentiate, vectorize, JIT-compile to GPU/TPU. Built for high-performance machine learning research and complex scientific simulations. Use for automatic differentiation, GPU/TPU acceleration, higher-order derivatives, physics-informed machine learning, differentiable simulations, and automatic vectorization.
Use when a user has a feature request, bugfix, refactor, migration, architecture change, or product goal and needs an implementation plan before coding. Use especially when wrong ownership, duplicate paths, stale contracts, weak evidence, or unclear cutover would make plausible agent work dangerous.
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.