The "anatomy" of the context window in Claude Code is dynamic. It is built to balance relevant information with token limits to ensure high-quality reasoning. Repository Structure: A high-level tree view of your project files.Active Files: Full content of files you specifically ask Claude to edit or read. Relevant Snippets: Small chunks of code pulled from related files using search. Shell Output: Results from terminal commands, test logs, or build errors. History: Previous turns in the current conversation to maintain flow. System Prompt: Core instructions defining Claude's capabilities and safety guardrails.