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fix(tool_search): remove MAX_RESULTS cap on select: exact-name lookups (#4086)

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The select: query form lets the model explicitly name the tools it wants
to promote. Capping the result at MAX_RESULTS (5) silently drops valid
selections when more than 5 deferred tools are requested at once.

This removes the [:MAX_RESULTS] slice on the select: branch in
DeferredToolCatalog.search() (exact-by-name lookups should return every
matched tool) and the redundant re-cap in build_tool_search_tool()
(search() already caps non-select query forms internally).

Co-authored-by: Claude <noreply@anthropic.com>
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黄云龙 2026-07-13 17:57:34 +08:00 committed by GitHub
parent 37580862b9
commit 62f905342c
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11
backend/tests/test_deferred_catalog.py
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@ -1,4 +1,5 @@
import pytest
from langchain_core.tools import StructuredTool
from langchain_core.tools import tool as as_tool
from deerflow.tools.builtins.tool_search import MAX_RESULTS, DeferredToolCatalog
@ -123,3 +124,13 @@ def test_hash_changes_with_membership():
c1 = DeferredToolCatalog((alpha_search, beta_translate))
c2 = DeferredToolCatalog((alpha_search,))
assert c1.hash != c2.hash
def test_search_select_not_capped_at_max_results():
"""select: must return ALL requested tools, even when >MAX_RESULTS."""
tools = tuple(StructuredTool.from_function(func=lambda q="": q, name=f"tool_{i:02d}", description=f"Tool {i}") for i in range(8))
cat = DeferredToolCatalog(tools)
names_csv = ",".join(f"tool_{i:02d}" for i in range(8))
got = cat.search(f"select:{names_csv}")
assert len(got) == 8
assert [t.name for t in got] == [f"tool_{i:02d}" for i in range(8)]