Expand single tool calls in chat messages#2369
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A run of consecutive thinking/tool blocks containing exactly one tool
call previously collapsed into an uninformative "Called 1 tool" summary,
hiding which tool ran behind an extra click. Keep collapsing only for
multi-tool runs ("Called N tools") and pure-thinking runs ("Thought"),
and render single-tool runs expanded so the tool name is visible inline.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01S8ttPBmjJF1iYMQjYxsVE8
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Summary
Modified the chat message rendering logic to expand single tool calls alongside thinking blocks, rather than collapsing them into a summary. This improves visibility of tool execution results without requiring an extra click.
Key Changes
unit.blocks.length > 1 && unit.toolCount !== 1){#each}, allowing multiple blocks (e.g., thinking + tool call) to display expandedtool-${block.uuid}-${blockIndex}for tools,think-${blockIndex}for thinking blocks)Implementation Details
The change preserves the existing
ToolCallsSummarycomponent for complex scenarios (multiple tools or thinking-only blocks) while expanding the simple case of a single tool call, optionally with thinking blocks. This provides better UX by showing tool results immediately without hiding them behind a collapsible summary.https://claude.ai/code/session_01S8ttPBmjJF1iYMQjYxsVE8