Blockchain

Guide for creating effective tools for AI agents. Use when building MCP tools, agent APIs, or any tool interface that agents will consume. Focuses on token efficiency, meaningful context, and proper namespacing.

Comprehensive JWT authentication expert for senior developers (10+ years experience). Intelligently detects project language/framework and implements production-ready JWT auth systems with refresh tokens, secure HTTP-only cookies, token rotation, blacklisting, RBAC, MFA, and complete security. Covers Express, FastAPI, Next.js, React, Django, Flask, NestJS, and more. Automatically audits JWT implementations, generates complete auth systems (registration, login, logout, refresh, password reset), implements middleware, prevents XSS/CSRF attacks, uses bcrypt/argon2 hashing, and follows OWASP best practices. Use for implementing JWT authentication, token refresh flows, secure cookie storage, protected routes, role-based access control, security audits, and complete auth system generation.

Citation management and fact-check sources. TRIGGERS: 'citações', 'citations', 'fact-check', 'factCheckSources', 'referências', 'fontes'. Use when extracting citations from Perplexity, validating sources, storing in factCheckSources field, displaying references to users.

Fluid typography and spacing tokens using Utopia.fyi with cqi (container query inline) units. Reference for the exact type steps and space tokens defined in this project.

Generates responsive breakpoint tokens for media queries and container queries. Use when setting up responsive design, mobile-first layouts, or viewport-based styling. Outputs CSS, Tailwind, or JSON.

Generate Safe UI compatible multisig batch JSON to reset veNFT votes. Use when the user wants to reset votes, clear voted status, or prepare vote reset transactions for a multisig wallet.

Add new states or transitions to Bob The Skull's state machine. Use when adding new states, defining transitions, implementing state behavior, or modifying state machine logic.

Expert in managing GCP Groups (Google Cloud Identity and Azure AD) via the Groups API. **Use this skill whenever the user mentions 'groups', 'group members', 'add to group', or 'remove from group'.** Handles listing members (with file-based approach for large groups), adding/removing members, and checking membership. Uses ADM token authentication. **DO NOT use for ServiceNow groups.**

Generates RBS type signatures from Ruby source files. Triggers when creating type definitions, adding types to Ruby code, or generating .rbs files for classes/modules without existing RBS signatures.

Enterprise Claude Code context window optimization with 2025 best practices: aggressive clearing, memory file management, MCP optimization, strategic chunking, and quality-over-quantity principles for 200K token context windows.

Model fine-tuning with PyTorch and HuggingFace Trainer. Covers datasetpreparation, tokenization, training loops, TrainingArguments, SFTTrainerfor instruction tuning, evaluation, and checkpoint management.

Testing strategies and patterns (unit, integration, E2E, API tests). TRIGGERS: 'test', 'teste', 'testing', 'E2E', 'integration test', 'unit test', 'test failure'. Use when setting up tests, writing test cases, debugging test failures, implementing test patterns.

This skill should be used when developing, optimizing, testing, or submitting algorithms for The Innovation Game challenges (3-SAT, CVRP, Knapsack). Use it for algorithm development, performance optimization, local testing, dry-run validation, or submission to earn TIG tokens through improved computational algorithms.

Pattern for creating skills with YAML frontmatter that enables progressive disclosure and token optimization. Use when building skills, optimizing context usage, or implementing domain expertise with minimal token overhead. Demonstrates how to structure SKILL.md files with metadata-driven loading that achieves 84% token reduction compared to manual instructions. Triggers on "create skill with metadata", "token optimization", "progressive disclosure", "skill frontmatter", "efficient skill design".

Define the holistic testing approach across functional, non-functional, and automation layers for the initiative.

Collaborative design refinement that transforms rough ideas into fully-formed specifications through Socratic questioning. Explores alternatives, validates incrementally, and presents designs in digestible chunks for feedback. Use before writing code or implementation plans when requirements are unclear or multiple approaches exist. Do NOT use when requirements are already well-defined, you're implementing a known pattern, or making small changes - proceed directly to implementation instead.

Creates well-formed tasks following a template that engineers can implement. Use when creating tasks, defining work items, creating tasks from PRD, breaking down features, or converting requirements into actionable tasks.

Write consistent, maintainable CSS following the project's methodology (Tailwind utility classes) while minimizing custom CSS and adhering to design system tokens. Use this skill when writing or editing CSS files, Tailwind classes in React components (.tsx, .jsx files), when implementing design system colors/spacing/typography, when using Tailwind utility classes, when deciding between framework utilities vs. custom CSS, when optimizing CSS for production with tree-shaking, when configuring Tailwind theme extensions, or when maintaining design consistency across the application.

Token-efficient library API documentation fetcher using Context7 MCP with 77% token savings.Fetches code examples, API references, and usage patterns for published libraries (React,Next.js, Prisma, etc). Use when users ask "how do I use X library", need code examples,want API syntax, or are learning a framework's official API. Triggers: "Show me React hooks","Prisma query syntax", "Next.js routing API". NOT for exploring repo internals/source code(use researching-with-deepwiki) or local files.

Connect wallet to Web3 DApp - navigate to DApp, click Connect Wallet, approve in MetaMask popup, verify connection. Can be used as a test case or as a precondition for other tests.