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Create and fix ASCII diagrams, tables, wireframes, box-drawings. Use when message contains Unicode box characters (┌┐└┘│─), user asks to create/fix text visualization, align borders, or fix broken ASCII art. Triggers on "поправ діаграму", "fix diagram", "create table", "вирівняй", "align boxes".

Senior Frontend Developer with 10+ years web and mobile experience. Use when implementing React/Next.js features, building React Native/Expo apps, writing TypeScript, creating UI components, implementing state management, or styling with TailwindCSS.

Complete comprehensive guide for creating, managing, and optimizing Claude Code Skills. Reference documentation covering structure, API usage, examples, best practices, and troubleshooting.

Enforce SOLID principles and clean code practices to improve readability, maintainability, and code quality. Use when writing, refactoring, or reviewing code.

General programming best practices applicable to all languages. Covers clean code, testing, refactoring, version control, and development workflows. Use when writing or reviewing code in any language.

Generate comprehensive unit, integration, and E2E tests with edge cases, mocks, and assertions. Use when writing tests for functions, classes, APIs, or implementing TDD.

Write in a fluid, punchy, and impactful style for blog articles

Use when project needs C3 adoption (no .c3/) or auditing existing C3 docs.Triggers: "adopt C3", "onboard", "scaffold", "audit", "validate", "check C3", "init".NOT for navigation (use c3-query) or changes (use c3-alter).

Explains code with visual diagrams and analogies. Use when explaining how code works, teaching about a codebase, or when the user asks "how does this work?"

WHEN: README generation/update, project documentation, installation/usage/contribution guidesWHAT: Project analysis + sectioned README templates + badges + environment variable docsWHEN NOT: API docs → api-documenter, Code comments → api-documenter

Grist API reference documentation for the grist-mcp-server project. Use when implementing or modifying Grist MCP tools, working with Grist cell values, UserActions, column types, widget options, database schema, or pages/widgets. This skill provides authoritative API specifications.

Install agent docs without overwriting or deleting existing content.

Load when reviewing code, writing code examples, or ensuring code quality.Contains coding standards for Python, JavaScript, SQL, and general bestpractices for publication-quality code.

Write clear, effective technical documentation following industry-proven patterns from exemplary projects and authoritative style guides, with built-in countermeasures for common LLM documentation issues

Implement comprehensive testing strategies with pytest, fixtures, mocking, and test-driven development for FastAPI applications. Use when writing Python tests, setting up test suites, or implementing testing best practices.

Automatically detects, installs, and configures Language Server Protocol (LSP) servers for enhanced code intelligence. Provides go-to-definition, find-references, hover docs, and symbol navigation.TRIGGERS - Keywords: lsp, language server, code intelligence, go to definition, find references, hover, symbols, diagnostics, autocomplete, intellisense, code navigation, jump to definition, find usages, type info.TRIGGERS - Phrases: "set up lsp", "install language server", "enable code intelligence", "configure lsp", "go to definition not working", "find references", "show type", "navigate to symbol", "code navigation".TRIGGERS - Automatic: After tech-detection completes, when opening new file types, when LSP operations fail.

Analyzes project structure, dependencies, and patterns to generate comprehensive context documentation. Uses parallel agent execution for faster analysis. Helps understand unfamiliar codebases quickly.

Use this skill when building MCP (Model Context Protocol) servers with FastMCP in Python. FastMCP is a framework for creating servers that expose tools, resources, and prompts to LLMs like Claude. The skill covers server creation, tool/resource definitions, storage backends (memory/disk/Redis/DynamoDB), server lifespans, middleware system (8 built-in types), server composition (import/mount), OAuth Proxy, authentication patterns, icons, OpenAPI integration, client configuration, cloud deployment (FastMCP Cloud), error handling, and production patterns. It prevents 25+ common errors including storage misconfiguration, lifespan issues, middleware order errors, circular imports, module-level server issues, async/await confusion, OAuth security vulnerabilities, and cloud deployment failures. Includes templates for basic servers, storage backends, middleware, server composition, OAuth proxy, API integrations, testing, and self-contained production architectures.Keywords: FastMCP, MCP server Python, Model Context

Read a webpage into cleaned markdown using curl + markitdown + codex exec. Use whenever asked to read a webpage or extract article content from a URL. Static HTML only; JS/client-rendered pages require a Playwright workflow.

Storybook stories, CSF3 format, autodocs. Use for component documentation.