deckrd

Read-only codebase investigation agent for deckrd commands. Protects the main session context window by delegating codebase surveys to a subagent. Supports scopes: codebase-extraction, codebase-survey, prior-art, pattern-detection. Spawned by deckrd skills to investigate the project without polluting the main context.

Document-driven framework that derives requirements, specifications, implementation plans, and executable tasks from goals through structured AI dialogue. Use when user says "write requirements", "create spec", "plan implementation", "derive tasks", "structure this feature", "break down into tasks", or "document this module". Also use for reverse engineering existing code into docs (/deckrd rev). Do NOT use for direct code writing — use /deckrd-coder after tasks are generated. Do NOT use when the user only wants to run or fix existing code without planning.