Expired60% confidenceFactExact time
With each request, Claude Code packages five layers of content and sends them to the API: the system prompt, tool definitions, CLAUDE.md, conversation history, and the current input.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Claude Code Context Management in Practice: The Five-Layer Backpack and Token Optimization Principles
bilibilionedayhigh6/7/2026
Related Claims
UnverifiedEvery time Claude Code sends a request to a large language model, the entire contents of CLAUDE.md are included in the context.74% similarUnverifiedClaude Code packages user input, CLAUDE.md file contents, current directory structure, and other information into a large Prompt and sends it to the Claude model via API.73% similarUnverifiedClaude Code插件系统通过工具调用规范注入机制，将平台最新API规范以OpenAPI Schema等结构化格式注入上下文窗口70% similarUnverifiedClaude Code adopts a five-layer architecture consisting of User Layer, Reasoning Layer, Tool Layer, Permission Layer, and Memory Layer.69% similar
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