Async Reasoning Compatibility Issue

General
1

I’m not sure if this is a bug or if there is another way to fix it. When using reasoning models with async tools (MCP tools), the arun() method returns a coroutine instead of an async generator, causing this error : ‘async for’ requires an object with _aiter_ method, got coroutine errors.

How to reproduce:

from agno.agent import Agent
from agno.models.openai import OpenAIChat
from agno.tools.mcp import MCPTools

# Setup MCP tools (async tools)
async with MCPTools("npx -y @modelcontextprotocol/server-brave-search") as mcp_tools:
    agent = Agent(
        model=OpenAIChat(id="gpt-4o"),
        tools=[mcp_tools],
        reasoning=True,  # This causes the issue
        markdown=True,
    )
    
    # This fails with async reasoning
    response = await agent.arun("What is the weather?")
    # Error: 'async for' requires an object with __aiter__ method, got coroutine

Expected Behavior

When reasoning=True with async tools, agent.arun() should return an async generator that can be iterated with async for.

Actual Behavior

When reasoning=True with async tools, agent.arun() returns a coroutine that cannot be iterated, causing the error.
2

Hi @jyotish, thanks for reaching out and supporting Agno. I’ve shared this with the team, we’re working through all requests one by one and will get back to you soon.If it’s urgent, please let us know. We appreciate your patience!