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2020* **Thinking block clearing** - For managing thinking blocks from earlier turns, with options to preserve recent thinking for context continuity
2121* **Client-side SDK compaction** - An SDK-based alternative for summary-based context management (server-side compaction is generally preferred)
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23| Approach | Where it runs | Strategies | How it works |
24| --------------- | ------------- | ----------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
25| **Server-side** | API | Tool result clearing (`clear_tool_uses_20250919`) Thinking block clearing (`clear_thinking_20251015`) | Applied before the prompt reaches Claude. Clears specific content from conversation history. Each strategy can be configured independently. |
26| **Client-side** | SDK | Compaction | Available in [TypeScript and Ruby SDKs](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) when using [`tool_runner`](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-runner). Generates a summary and replaces full conversation history. See [Client-side compaction](https://platform.claude.com/docs/en/build-with-claude/context-editing#client-side-compaction-sdk). |
23| Approach | Where it runs | Strategies | How it works |
24| --------------- | ------------- | ---------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
25| **Server-side** | API | Tool result clearing (`clear_tool_uses_20250919`)<br />Thinking block clearing (`clear_thinking_20251015`) | Applied before the prompt reaches Claude. Clears specific content from conversation history. Each strategy can be configured independently. |
26| **Client-side** | SDK | Compaction | Available in [TypeScript and Ruby SDKs](https://platform.claude.com/docs/en/cli-sdks-libraries/overview) when using [`tool_runner`](https://platform.claude.com/docs/en/agents-and-tools/tool-use/tool-runner). Generates a summary and replaces full conversation history. See [Client-side compaction](https://platform.claude.com/docs/en/build-with-claude/context-editing#client-side-compaction-sdk). |
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2828## Server-side strategies
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