Development skills

Estimate per-turn token attribution across 6 categories in Claude Code sessions to show where context budget is spent

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Context-Driven Development methodology - treating project context as managed artifacts alongside code for consistent AI interactions and team alignment.

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Database design and optimization specialist. Schema design, query optimization, indexing strategies, data modeling, and migration planning for relational and NoSQL databases.

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Database expert including Prisma, Supabase, SQL, and NoSQL patterns

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Systematic 4-phase debugging with root cause investigation. Use when fixing bugs to prevent random fixes.

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Discover, parse, and call external HTTP APIs at runtime using OpenAPI specs, tool templates, and iterative chaining. Adapted from UTCP (Universal Tool Calling Protocol) patterns for Node.js and Claude Code agents.

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Structured debug log analysis for Claude Code sessions — auto-discovers most recent log, runs reducer, extracts error patterns, correlates with full log, produces observability report. Fills 5 identified gaps: hook error body capture, agent identity, file path tracking, stall correlation, success visibility.

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C++ coding standards and best practices.

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Programmatic code style validation using AST analysis. Complements (not replaces) code-style rules by providing automated checking and instant feedback.

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Requires detailed type annotations for all Python functions, methods, and class members.

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Safe codebase cleanup: delete AI slop, consolidate duplicates, update imports — always test-verified before committing

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Two-agent cleanup pattern. Implementer works freely, then a dedicated cleanup agent removes unused imports, console.logs, commented-out code, dead code, and formatting issues. Produces a diff of what was cleaned.

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Detect Claude Code context compaction events in session JSONL logs. Identifies compaction boundaries, measures token delta before/after, reports compaction events with timestamps and token impact.

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Validates commit messages against Conventional Commits specification using programmatic validation. Replaces the git-conventional-commit-messages text file with a tool that provides instant feedback.

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Creates command files for the Claude Code framework. Commands are user-facing shortcuts that delegate to skills.

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Search and retrieve academic papers from arXiv.org using WebFetch and Exa. No MCP server required - uses existing tools to access arXiv API directly.

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Semantic code search using Phase 1 vector embeddings and Phase 2 hybrid search.

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API development expert including REST design, OpenAPI, and documentation

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Specifies the preferred syntax for asynchronous operations using async/await and onMount for component initialization. This results in cleaner and more readable asynchronous code.

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Master binary analysis patterns including disassembly, decompilation, control flow analysis, and code pattern recognition. Use when analyzing executables, understanding compiled code, or performing static analysis on binaries.

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Build apps with the Claude API or Anthropic SDK. TRIGGER when: code imports `anthropic`/`@anthropic-ai/sdk`/`claude_agent_sdk`, or user asks to use Claude API, Anthropic SDKs, or Agent SDK. DO NOT TRIGGER when: code imports `openai`/other AI SDK, general programming, or ML/data-science tasks.

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Structural code graph queries via CodeGraphContext MCP (tree-sitter + KuzuDB). Find callers, callees, class hierarchies, dead code, and module dependencies.

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Code quality expert including clean code, style guides, and refactoring

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Static code analysis and complexity metrics

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