tool-search-tool changedagents-and-tools/tool-use/tool-search-tool
Nearest release: v2.1.321, published under an hour before this site recorded the change. Shown because the two are within 24 hours of each other. Nothing here says the release caused the edit.
Recorded here
Lines+4added
Lines−0removed
From line
8
where the diff opens
First seen
14 Aug 2026
this site's first read of the page
Recorded edits25to this page, all time
The whole hunk
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88 eligibility: eligible
99 note: Excludes [Covered Models](https://platform.claude.com/docs/en/manage-claude/api-and-data-retention#model-specific-data-retention-requirements). Server-side tool run by Anthropic; the tool definitions in the request are searched in memory per call and nothing is stored after the response.
1010 supportedModels:
11 - claude-fable-5-2
12 - claude-mythos-5-2
1113 - claude-fable-5-1
1214 - claude-mythos-5-1
1315 - claude-fable-5
from line 71
6971
7072| Model | Tool versions |
7173| ---------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------- |
74| Claude Fable 5.2 (claude-fable-5-2) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` |
75| Claude Mythos 5.2 (claude-mythos-5-2) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` |
7276| Claude Fable 5.1 (claude-fable-5-1) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` |
7377| Claude Mythos 5.1 (claude-mythos-5-1) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` |
7478| Claude Fable 5 (claude-fable-5) | `tool_search_tool_regex_20251119`, `tool_search_tool_bm25_20251119` |
No line in this hunk matches that.