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Python: [Bug]: Run Error with Create/Get Agent API for Azure V2: model_deployment_name must be a non-empty string #3228
Description
Description
I receive the attached error during the agent run phase after creating or using an agent with the get/create APIs in the new Foundry V2 update.
As you can see in the screenshot below, a model has already been chosen.
Code Sample
import asyncio
import os
from agent_framework.azure import AzureAIProjectAgentProvider
from azure.ai.projects.aio import AIProjectClient
from azure.core.exceptions import ResourceNotFoundError
from azure.identity import InteractiveBrowserCredential
async def main():
credential = InteractiveBrowserCredential()
async with AIProjectClient(
endpoint=os.environ["AZURE_AI_FOUNDRY_PROJECT_ENDPOINT"],
credential=credential,
) as project_client:
provider = AzureAIProjectAgentProvider(project_client=project_client)
agent_name = "summarizer-agent"
try:
agent = await provider.get_agent(name=agent_name)
print(f"Agent found: {agent.name}")
except ResourceNotFoundError:
agent = await provider.create_agent(
name=agent_name,
model="gpt-5.2",
instructions="You are responsible for writing a brief summary of a few sentences on the given subject.",
description="An agent that summarizes a given subject.",
)
print(f"Agent created: {agent.name}")
response = await agent.run(subject="Artificial Intelligence")
print("===== Agent Response =====")
print(response)
if __name__ == "__main__":
asyncio.run(main())Error Messages / Stack Traces
File ".../.venv/lib/python3.13/site-packages/agent_framework_azure_ai/_client.py", line 410, in _check_model_presence
raise ValueError("model_deployment_name must be a non-empty string")
ValueError: model_deployment_name must be a non-empty stringPackage Versions
1.0.0b260114
Python Version
3.13
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dmytrostruk commentedon Jan 16, 2026
Mehmet Koçum (@mhmtkcm) Thanks for reporting this issue! Should be fixed by: #3246.
One note: in your code sample in line:
I don't think
subjectis correct parameter here, the correct one would bemessages. It is also a first parameter in the method, so you can simply pass a string. Same applies to your code sample in #3229 issue. Thanks!mhmtkcm commentedon Jan 16, 2026
After opening the issue, I realized that I had written the example incorrectly. However, I don't use it this way in my original code. Thank you for the information.
Thanks for the fix, too!