Skills
99,719 packaged capabilities and playbooks for agents. Install any of them with one command.
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Plan safe database schema evolution and zero-downtime change rollout for Kotlin plus Spring systems using Flyway, Liquibase, or equivalent migration tooling. Use when changing tables, columns, constraints, indexes, or data shape in systems with live traffic, rolling deploys, large datasets, or backward-compatibility requirements between old and new application versions.
Machine learning in Python with scikit-learn. Use for supervised learning (classification, regression), unsupervised learning (clustering, dimensionality reduction), model evaluation, hyperparameter tuning, preprocessing, or building ML pipelines. Provides comprehensive reference documentation for algorithms, preprocessing techniques, pipelines, and best practices.
Spectacle, budgeted. Scroll-driven animation with native CSS first and GSAP ScrollTrigger when needed, smooth scrolling with Lenis and when to turn it off, split-text reveals, pinned scenes, canvas and WebGL on a performance budget, shaders as material, pausing off-screen, loading strategy, and the reduced-motion and no-JS fallbacks that keep the page readable. Use for marketing pages, portfolios, launches and hero sections. Never for product UI.
Implements the Spec-Driven Development lifecycle (Intent, Requirements, Design, Tasks, Build) for structured feature development. Use when the user wants to scaffold a new feature spec, generate EARS requirements, create a technical design, break work into tasks, or check spec status. Trigger on keywords: sdd, spec-driven, ears requirements, feature spec.
Use when reviewing code security, auditing dependencies for CVEs, checking configuration or secret security, assessing authentication and authorization patterns, identifying OWASP vulnerabilities (injection, XSS, CSRF), or addressing security concerns about implementations.
Apply Semantic Versioning 2.0.0 (semver.org) to decide version bumps, validate version strings, and compare version precedence. Use whenever a task involves choosing the next version number, judging whether a change is a MAJOR/MINOR/PATCH bump, checking that a string is a well-formed version, ordering versions by precedence, or building a pre-release or build-metadata version. Often used as a building block by release, changelog, and publishing workflows — trigger whenever version numbers are being reasoned about, even if "semver" is never said.
Comprehensive frontend development skill for building modern, performant web applications using ReactJS, NextJS, TypeScript, Tailwind CSS. Includes component scaffolding, performance optimization, bundle analysis, and UI best practices. Use when developing frontend features, optimizing performance, implementing UI/UX designs, managing state, or reviewing frontend code.
Installs and configures gcx: contexts, authentication, connection to Grafana Cloud or on-premise Grafana, env var overrides for CI/CD, default datasources. Use for first-time setup, or when gcx fails with auth or connection errors (401, 403, connection refused, missing namespace).
Scientific method expert for systematic bug investigation and root cause analysis. Use when users report bugs, crashes, unexpected behavior, or debugging requests. Applies hypothesis-driven investigation, controlled experiments, and rigorous validation across any programming language or platform.
An industrial-scale scriptwriting super-system for hit short dramas on Douyin/Hongguo v4.9.1. A pure script engine (public, general-purpose edition for all genres; no production handoff). Core features: dynamically mounted matrix on demand (8 interaction modes, mounting only core files to prevent Context overload); emotional contract unit-chain round-trip method; full map of 40 genre tracks (12 male-oriented/14 female-oriented/14 neutral); six archetypal hook library (including irreversible deprivation of the core trump card) plus five cliffhanger formulas; rotation matrix for nine A~I reversal techniques plus layered hot/cold ledger; three length tiers (standard: 90~120 seconds/480~850 main-text characters; long: flexible 150~195 seconds/820~1400 characters; manhua drama: 60~90 seconds/330~620 characters); four-beat pacing chart for 15-second episode shifts (hook and establish stakes -> direct confrontation -> reveal and reverse -> aftermath hook); three visual anchors for strong imagery (insert a strong visual △ every 2~4 sentences; E24 blocks dry-talk gaps/E26 blocks ineffective micro-actions); rules for plain language delivered directly in the same beat and fast/slow pacing (state evidence and conclusion together/translate setting terms into plain language in the same sentence; E25 blocks cryptic jargon); three-layer, similarity-not-imitation adaptation method (strip surface and banned terms -> extract dramatic formula -> reskin across dimensions); duration conversion anchors (write at target 4.5 characters/s and validate at 4.5 characters/s minimum to prevent inflated runtime claims); production-side check of <=95 characters per 15-second window; soft constraint of <=40 characters per action paragraph; golden dialogue/action ratio of 25%~70%; first three episode beat cards; four paywall variants; cross-episode continuity ledger; web-fiction adaptation pipeline; character bible; dramatic craft layer; controlled monologue and narration rules; expression phrase format (visual word | tone word); review and repair issue cards; protective counterexample set; 11 compliance red lines under NRTA Order No. 16; tiered script machine checks (E1~E26) plus full-series ledger checks (S1~S8). Triggers: writing short dramas or outlines, project proposals, fixing pacing, episode breakdowns, long-form episodes, script doctoring, polishing, inner monologue, narration, voiceover, ultra-fast short dramas, compliance review, or consecutive writing.
Create new skills, modify existing skills, and validate skill quality for the FlagOS skills repository. Use this skill whenever someone wants to create a skill from scratch, improve or edit an existing skill, scaffold a new skill directory, validate skill structure, or run test cases against a skill. Trigger when the user says things like "create a skill", "make a new skill for X", "scaffold a skill", "improve this skill", "validate my skill", or simply "/skill-creator-flagos". Also trigger when users mention turning a workflow into a reusable skill, or want to package a repeated process as a skill.
Global evolution system for ship-faster skills. Uses hooks to capture context, failures, and session summaries, then generates patch suggestions (no auto edits) via skill-improver. Use when you want the skills to self-improve safely and continuously.
Audit the skill inventory for quality, coverage, and staleness. Detect overlapping, incomplete, or outdated skills and produce a health report. Activate when: skill audit, stocktake, skill inventory, check skills, which skills exist, audit skills, skill quality, skill coverage.
Chinese internet memes and slang, researched in real time and used naturally. Use when the user wants to add an online feel to a contemporary novel, find out what's trending on Douyin / Xiaohongshu (RedNote) / Weibo / Bilibili, ask whether a meme is still popular, or worry that adding one might feel awkward or dated. Search online for current memes and assess whether to use them, which ones to use, and where to place them based on genre, characters, and platform, avoiding forced or tacky results.
Generate custom Claude Code slash commands through intelligent 5-7 question flow. Creates powerful commands for business research, content analysis, healthcare compliance, API integration, documentation automation, and workflow optimization. Outputs organized commands to generated-commands/ with validation and installation guidance.
smina molecular docking CLI. AutoDock Vina fork with customizable scoring functions, native SDF/MOL2/PDB ligand input, autoboxing, local energy minimization, and per-atom score breakdowns. Pipeline: receptor PDBQT prep -> ligand prep (RDKit/OpenBabel) -> dock via autobox or explicit grid -> rescore/minimize with custom scoring -> rank poses by affinity. Choose smina over Vina when you need custom scoring terms (--custom_scoring), local optimization of an existing pose (--local_only), per-atom contributions (--atom_term_data), or SDF/MOL2 ligands without manual PDBQT conversion. For unknown binding sites use diffdock; for the Python-bindings/Vinardo workflow use autodock-vina-docking.
Build and edit the Smithery homepage app -- a TanStack Start + shadcn/ui web app at ~/.smithery/homepage that connects to MCP servers through the Smithery Connect API. Use this skill whenever the user wants to create, modify, or add features to the Smithery homepage, build pages that display data from MCP tools (Linear issues, Gmail, Notion, etc.), or asks about editing anything in ~/.smithery/homepage. Also triggers for requests like 'add a page to the homepage', 'show my Linear issues on the homepage', 'update the homepage UI', or any task involving the ~/.smithery/homepage project.
When the user wants help creating, scheduling, or optimizing social media content for LinkedIn, Twitter/X, Instagram, TikTok, Facebook, or other platforms. Also use when the user mentions "LinkedIn post," "Twitter thread," "social media," "content calendar," "social scheduling," "engagement," or "viral content." This skill covers content creation, repurposing, and platform-specific strategies.
Creative Designer skill. Takes a post concept, a client product photo, or a real lifestyle photo and produces on-brand social media visuals using the client's brand style guide. Four modes — Generate (AI image from concept), Composite (client product photo anchored in an AI-generated scene), Brand (apply text overlay treatment to a real client photo), Stop-Motion Reel (6-frame action sequence exported as MP4). Reads brand-style.md, builds prompts, generates/edits images via Nano Banana MCP, outputs images + prompt log + creative brief.
Use when someone asks to research a software-engineering question through a verified, multi-perspective lens — "should we use X vs Y", "evaluate library/framework/database Z", "research whether we should adopt …", "write an ADR for …", "spike on …", or "migrate from X to Y / upgrade path". Runs a STORM-style pipeline specialized for software: auto-detects one of five research modes (library-eval, deep-research, architecture, spike, migration), spawns that mode's expert lenses in parallel, maps their contradictions, synthesizes an HTML briefing and a Markdown/ADR record, then adversarially verifies every claim against PRIMARY software sources (official docs, RFCs, GitHub releases, OSV/CVE, OpenSSF Scorecard, benchmarks) with version-awareness. Best for decisions where multiple viewpoints and version-correct, fact-checked claims matter; overkill for a quick API lookup. For non-software topics use deep-research; for a pure scored decision matrix use trade-off-analysis.
Use when writing SpacetimeDB Rust clients, generated Rust bindings, connection code, subscriptions, cache access, reducer invocation, callbacks, or identity handling. Triggers on: Rust client, Rust SDK, generated Rust bindings, Rust subscription, Rust reducer call, Rust callbacks.
Comprehensive guidance for building web apps with opinionated defaults for tech stack, design system, and code standards. Use when user wants to create a new web application, dashboard, or interactive interface. Provides tech choices, styling guidance, project structure, and design philosophy to get users up and running quickly with a fully functional, beautiful web app.
Query and apply The Website Specification — a platform-agnostic specification of what a good website does, with each item tagged required, recommended, optional, or avoid. Use when the user asks what their site should have, whether something is required, how to audit a URL, what's missing for agent readiness, or anything else where you'd otherwise be guessing at web best practice. Backs answers with primary sources (WHATWG, W3C, IETF RFCs, IANA, WCAG). Available as Markdown over HTTP and as an MCP server with search, list, fetch, checklist, and audit tools.
Springdoc OpenAPI for API documentation in Spring Boot. Covers Swagger UI configuration, annotations, schema customization, and security documentation. Based on production patterns from castellino and gestionale-presenze projects. USE WHEN: user mentions "Springdoc", "Spring Boot OpenAPI", "Swagger in Spring", "@Operation", "@Schema", "Swagger UI Spring", asks about "Spring Boot API documentation", "Spring REST documentation", "OpenAPI in Java". DO NOT USE FOR: General OpenAPI specs - use `openapi` instead; GraphQL - use `graphql` instead; Non-Spring Boot projects; Frontend OpenAPI generation - use `openapi-codegen` instead
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.