What
A feature that changes how deferred tool search prompts are constructed when tool names are injected into messages.
Status
Feature-flagged via tengu_tst_names_in_messages (default false)
Details
- Controlled by
CLAUDE_CODE_TST_NAMES_IN_MESSAGESenvironment variable or thetengu_tst_names_in_messagesfeature flag - When enabled, returns a different tool search prompt variant (
CS9) instead of the default - Appears to change how the ToolSearchTool presents its available tools list
Evidence
Tool names in messages feature (search for "CLAUDE_CODE_TST_NAMES_IN_MESSAGES", gated by tengu_tst_names_in_messages)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.