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Merge pull request #3014 from jlowin/claude/issue-3011-20260128-0658

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Bill Easton 2026-01-31 15:00:53 -06:00 • committed by GitHub
commit 70f0fd3a0a
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5
src/fastmcp/server/sampling/run.py
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@ -634,7 +634,8 @@ async def sample_impl(
# Continue with the updated history
current_messages = step.history
# After first iteration, reset tool_choice to auto
tool_choice = None
# After first iteration, reset tool_choice to auto (unless structured output is required)
if result_type is None or result_type is str:
tool_choice = None
raise RuntimeError(f"Sampling exceeded maximum iterations ({max_iterations})")