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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.308 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.0 ·

Tool Search Mode Telemetry

Entry
JSON All of v2.1.0
EntryKind: in v2.1.0,
ChangesSection of the release

Enhanced telemetry for tool search mode decisions, providing better observability into when and why tool search is enabled or disabled.

Details
  • Logs tengu_tool_search_mode_decision events with reason codes:
  • model_unsupported, mcp_search_unavailable, tst_enabled
  • auto_above_threshold, auto_below_threshold, mcp_cli_mode, standard_mode
  • Includes MCP tool count and threshold information
Evidence

G70() at line 280942 (contains l("tengu_tool_search_mode_decision")

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.0 →

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