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Explore the context window - Claude Code Docs

code.claude.com · 802 words · saved by 1 readers

An interactive simulation of how Claude Code's context window fills during a session. See what loads automatically, what each file read costs, and when rules and hooks fire.

Explore the context window - Claude Code Docs Documentation Index Fetch the complete documentation index at: /docs/llms.txt Use this file to discover all available pages before exploring further. Skip to main content Claude Code’s context window holds everything Claude knows about your session: your instructions, the files it reads, its own responses, and content that never appears in your terminal. The timeline below plays a full session from startup to compaction: what loads before you type, what each file read, rule, and hook adds as Claude works, and how a subagent keeps large reads out of

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