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fix(agent_toolset): grep tolerates extra model-supplied args #1719

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fix(agent_toolset): grep tolerates extra model-supplied args #1719

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11 changes: 9 additions & 2 deletions src/anthropic/lib/tools/agent_toolset.py
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Original file line number Diff line number Diff line change
Expand Up @@ -645,8 +645,15 @@ async def glob(pattern: str, path: Optional[str] = None) -> str:

def beta_grep_tool(ctx: AgentToolContext) -> BetaAsyncFunctionTool[Any]:
@beta_async_tool(name="grep", input_schema=BetaManagedAgentsAgentToolset20260401GrepInput)
async def grep(pattern: str, path: Optional[str] = None) -> str:
"""Search file contents for a regular expression."""
async def grep(pattern: str, path: Optional[str] = None, **_ignored: Any) -> str:
"""Search file contents for a regular expression.

Extra keyword arguments are accepted and ignored. A model often passes
Claude-Code-style grep options (e.g. ``output_mode``, ``head_limit``,
``-i``) that are not part of the ``agent_toolset_20260401`` grep schema
(``pattern``/``path`` only). Without swallowing them, ``validate_call``
rejects the call and the model gets a hard error instead of results.
"""
try:
search = resolve_path(ctx, path) if path else Path(ctx.workdir).resolve()
except ValueError as e:
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