docs-thinking-memory
Anthropic Docs — Extended/Adaptive Thinking, Context Editing, Memory Tool
URL: https://platform.claude.com/docs/en/build-with-claude/extended-thinking Publisher: Anthropic Docs Retrieved: 2026-07-08
Summary
Official Anthropic developer documentation covering the reasoning + context-management surface for the Claude certification. The docs.anthropic.com/... URLs 301-redirect to platform.claude.com/...; content fetched from the canonical host. Covers: extended thinking with the deprecated thinking={"type":"enabled","budget_tokens":N} form (400 on Fable 5 / Mythos 5 / Opus 4.8 / Opus 4.7 / Sonnet 5) vs the recommended thinking={"type":"adaptive"} + effort (low/medium/high/xhigh/max), the display field (summarized/omitted), interleaved thinking (beta header interleaved-thinking-2025-05-14 only on Opus 4.5 / earlier Claude 4), thinking-block signature/redacted_thinking echo rules and the "cannot be modified" 400, and tool_choice any/tool incompatibility with thinking. Also covers context editing (beta header context-management-2025-06-27, strategy clear_tool_uses_20250919, trigger/keep/clear_at_least/exclude_tools/clear_tool_inputs with defaults) and the memory tool (memory_20250818, GA/no beta header, six client-side commands over /memories), plus their pairing.