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These are the shareable article-style entry points into the same canonical chapter tree.
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Article
Overall Architecture
Build the mental model of Claude Code before reading any one file in isolation.
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Startup And Boot Sequence
Understand how the process starts, loads configuration, and prepares the session.
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Interaction Shell And App State
Learn how the REPL, UI components, and shared state produce the interactive experience.
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Context And Prompt Construction
Follow the path from cached context snapshots to final prompt assembly and memory loading.
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The Query Engine And Turn Lifecycle
Follow one turn from prepared messages to streamed output and post-processing.
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Tools And Permission Model
Start with the shared tool contract, then see how Claude Code assembles tools, gates each call, and runs real implementations.
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Bash Tool As A Case Study
Use the real Bash tool to see how one concrete tool combines schema, safety checks, UI classification, and shell execution behavior.
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Tasks, Agents, And Background Execution
Learn how long-running work is represented and tracked.
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Commands And User Control
See how slash commands are registered and how they differ from tools.
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Extensions: Skills, Plugins, And MCP
Understand how Claude Code becomes extensible through skills, plugins, and MCP connections.
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Remote, Bridge, And Connected Modes
Learn how Claude Code operates when work crosses process or machine boundaries.
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Services Behind The Scenes
Explore the support layer that handles APIs, analytics, memory, compacting, and other infrastructure.
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Special Features And Memorable Corners
Collect the unusual or delightful side systems that make the codebase memorable.