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Found 1,744 Skills
Create a comprehensive inventory of a codebase. Map structure, entry points, services, infrastructure, domain models, and data flows. Pure documentation—no opinions or recommendations. Use when onboarding to an unfamiliar codebase, documenting existing architecture before changes, preparing for architecture reviews or migration planning, or creating a reference for the team. Triggers on requests like "map this codebase", "document the architecture", "create an inventory", or "what does this codebase contain".
Google Optimization Tools. An open-source software suite for optimization, specialized in vehicle routing, flows, integer and linear programming, and constraint programming. Features the world-class CP-SAT solver. Use for vehicle routing problems (VRP), scheduling, bin packing, knapsack problems, linear programming (LP), integer programming (MIP), network flows, constraint programming, combinatorial optimization, resource allocation, shift scheduling, job-shop scheduling, and discrete optimization problems.
Build trust signals that reduce perceived risk and enable user action. Use when designing landing pages, checkout flows, onboarding experiences, or any conversion point where user hesitation is a barrier.
Improve user onboarding flows to increase activation and retention. Use when asked to design welcome screens, setup wizards, product tours, onboarding checklists, or activation sequences. Trigger phrases: "onboarding flow", "user activation", "welcome screen", "product tour", "onboarding checklist", "first-run experience", "setup wizard", "aha moment", "time to value", "user onboarding", "activation rate".
React Native authentication patterns for Expo apps. Use when implementing login flows, Google/Apple sign-in, token management, session handling, or debugging auth issues in Expo/React Native.
Design user interactions, flows, and interface behaviors. Use for wireframes, prototypes, micro-interactions, user flows, state machines, affordance design, and usability reviews. Covers IxD principles, Nielsen heuristics, Fitts's Law, Hick's Law, and emerging paradigms (spatial, conversational, gesture-based interfaces). Keywords: IxD, wireframe, prototype, user flow, micro-interaction, UI state diagram, screen flow, clickable prototype, interaction pattern.
Develops end-to-end UI tests with Playwright for Blazor applications. Use when: Writing E2E tests, testing Blazor WASM pages, validating UI flows, checking responsive design, detecting JavaScript errors, or testing MudBlazor components.
Modern authentication implementation for 2026 - passkeys (WebAuthn), OAuth (Google, Apple), magic links, and cross-device sync. Use for passwordless-first authentication, social login setup, Supabase Auth, Next.js auth flows, and multi-factor authentication. Activate on "passkeys", "WebAuthn", "Google Sign-In", "Apple Sign-In", "magic link", "passwordless", "authentication", "login", "OAuth", "social login". NOT for session management without auth (use standard JWT docs), authorization/RBAC (use security-auditor), or API key management (use api-architect).
Design intuitive, meaningful interactions grounded in user goals and cognitive principles. Use when designing component behaviors, user flows, feedback systems, error handling, loading states, transitions, accessibility, keyboard navigation, touch/gesture interactions, or when evaluating interaction quality. Also use for modal vs modeless decisions, direct manipulation patterns, input device considerations, emotional/dramatic aspects of UX, or when asked about making interfaces feel responsive, humane, and goal-directed.
Use this skill when the user needs to build a financial model, calculate unit economics, understand MRR/ARR/churn, or figure out their quit number. Covers SaaS metrics, CAC/LTV, burn rate, cash flow modeling, and making unit economics legible for non-finance founders.
Perform a high-level flow audit of an implementation plan, analyzing phase-to-phase dependencies, data flow consistency, ordering logic, stale artifacts, and risk assessment. Use when asked to 'audit the plan', 'check plan flow', 'review plan dependencies', 'find plan discrepancies', or 'assess plan coherence'. Do NOT use for per-phase template compliance (use /review-plan) or creating plans (use /create-plan).
Validate authentication mechanisms for security weaknesses and compliance. Use when reviewing login systems or auth flows. Trigger with 'validate authentication', 'check auth security', or 'review login'.