Claude Code v2.1.19 ·
Tool Use Summaries
EntryKind: in v2.1.19,
ChangesSection of the release
What
The agent can now generate brief summaries of tool execution batches for better context awareness.
Details
- Uses a lightweight model to summarize what tools accomplished
- Summaries are under 8 words, using past tense (e.g., "Searched codebase for authentication code")
- Creates a new
tool_use_summary message type in the conversation - Helps maintain context without re-reading full tool outputs
Evidence
qe7() at line 421001 (tool use summary generator, contains "Provide a brief summary of what was accomplished")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
See this entry in the whole of v2.1.19 →
