docs(tool_use): add Opus 4.6 server-side compaction guidance to context compaction cookbook

[PedramNavid]

Adds a callout recommending server-side compaction for Opus 4.6 users, clarifying that this cookbook covers SDK-based compaction for older models or alternative summarization model use cases.

[github-actions]

Notebook Changes

This PR modifies the following notebooks:

📓 tool_use/automatic-context-compaction.ipynb

View diff

nbdiff tool_use/automatic-context-compaction.ipynb (ce4c093127bb52ad79294bd433b2de5a19dab31f) tool_use/automatic-context-compaction.ipynb (c308bde5356147dafdf6da56385a78f20cdee624)
--- tool_use/automatic-context-compaction.ipynb (ce4c093127bb52ad79294bd433b2de5a19dab31f)  (no timestamp)
+++ tool_use/automatic-context-compaction.ipynb (c308bde5356147dafdf6da56385a78f20cdee624)  (no timestamp)
## inserted before /cells/1:
+  markdown cell:
+    source:
+      > **Using Opus 4.6?** We recommend using [server-side compaction](https://docs.anthropic.com/en/docs/build-with-claude/compaction), which handles context management automatically without any SDK-level configuration.
+      >
+      > This cookbook covers **SDK-based compaction**, which is useful if you're using an older model or want to use a different (cheaper) model for summarization.

---

Generated by nbdime

[github-actions]

Summary

Status	Count
🔍 Total	3
✅ Successful	0
⏳ Timeouts	0
🔀 Redirected	0
👻 Excluded	0
❓ Unknown	0
🚫 Errors	3
⛔ Unsupported	0

Errors per input

Errors in temp_md/automatic-context-compaction.md

• [ERROR] file:///home/runner/work/claude-cookbooks/claude-cookbooks/temp_md/utils/customer_service_tools.py | Cannot find file: File not found. Check if file exists and path is correct
• [200] https://docs.anthropic.com/en/docs/build-with-claude/compaction | Rejected status code (this depends on your "accept" configuration): OK
• [200] https://www.anthropic.com/engineering/effective-context-engineering-for-ai-agents | Rejected status code (this depends on your "accept" configuration): OK
  Full Github Actions output

[github-actions]

PR Review

Recommendation: APPROVE

Summary

This PR adds a well-placed callout directing Opus 4.6 users to server-side compaction while clarifying that the cookbook covers SDK-based compaction for older models or custom use cases.

Actionable Feedback (0 items)

No actionable issues identified. The PR is ready to merge.

Optional Suggestions (non-blocking):

• Consider adding an emoji (💡) to the callout for better visual distinction
• Verify the documentation link is publicly accessible
• Consider mentioning the model ID (claude-opus-4-6) for extra clarity

Detailed Review

Code Quality

Excellent. The change is minimal, focused, and well-implemented:

• Clean markdown blockquote formatting
• Proper cell structure and metadata
• No changes to existing content (low risk)
• Removed trailing newline (good housekeeping)

Documentation

Very Good. The callout is:

• Well-placed: Right after prerequisites, before main content
• Clear value proposition: Contrasts server-side (automatic) vs SDK-based (manual, configurable)
• Pedagogically sound: Validates the cookbook's purpose for older models and custom use cases
• Technically accurate: Correctly identifies Opus 4.6 server-side compaction capabilities

Structure

Perfect placement. Users see the guidance before investing time in SDK-based approaches, while those who need SDK-based compaction can continue seamlessly.

Security

No concerns. Documentation-only change with no code execution.

Suggestions

All suggestions are optional enhancements:

1. Visual enhancement: Adding 💡 or similar emoji could improve visibility
2. Model ID clarity: Consider mentioning claude-opus-4-6 explicitly
3. Link verification: Confirm the docs.anthropic.com link is live

Positive Notes

• Excellent positioning - catches users at the right moment
• Clear decision tree - helps users choose the right approach
• Preserves value - doesn't dismiss the cookbook, validates its specific use cases
• Minimal diff - only 7 lines added, easy to review
• Good messaging - balances recommendation with educational value
• Clean commit - follows conventional commits format (docs(tool_use):)

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Note: You may want to update CLAUDE.md separately to reflect Opus 4.6 as the latest model for consistency.