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Python: feat: implement ParallelToolExecutor for concurrent tool calling #4429 #4873

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17 changes: 17 additions & 0 deletions python/packages/agent-framework/src/agent_framework/tools/parallel/executor.py
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@eavanvalkenburg eavanvalkenburg Mar 24, 2026

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I'll let @moonbox3 and @TaoChenOSU comment on if we need this, because I kind of doubt it, we already support fan-in/fan-out, but this is the definitely not the place to put this.

Original file line number Diff line number Diff line change
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import asyncio
from typing import List, Any, Callable

class ParallelToolExecutor:
"""
Executor for parallel tool calls in agentic workflows.
Significantly reduces latency for multi-tool operations.
"""
def __init__(self, max_concurrency: int = 5):
self.semaphore = asyncio.Semaphore(max_concurrency)

async def execute_parallel(self, tool_calls: List[Callable[[], Any]]) -> List[Any]:
async def _run_tool(call):
async with self.semaphore:
return await asyncio.to_thread(call)

return await asyncio.gather(*[_run_tool(call) for call in tool_calls])