Local MCP tool support for Ollama client (native or OpenAIChatClient compatible)

[sashanknjs]

Hi,

I am trying to use the MCPStdioTool to integrate my mcp server with my agent using the Ollama client, however, the tool is not being used by the agent to give the response. Does this mean Ollama doesn't support MCPStdioTool? But according to the latest official documentation (https://learn.microsoft.com/en-us/agent-framework/agents/tools/?pivots=programming-language-python), the picture below shows that it is supported. If it is actually supported, how should I use it?

[pahilt]

I'm having the same problem... I have an agent based on nemotron-3-nano:4b via Ollama and sometimes, rather than invoking the tool, Agent Framework returns the tool invocation like:

Agent: {"call_id":"AA1C4801","name":"fetch","arguments":{"url":"https://en.wikipedia.org/","max_length":5000}}

Sometimes, the MCP call does get intercepted by AF and other times it doesn't.

[eavanvalkenburg]

So, MCPTools (the non-hosted ones), like MCPStdioTool are all just wrappers creating a set of Function Tools, so they work whenever function calling works, in the case of Ollama, I have noticed that many times function calling performance is very much due to the model and the specific way it is being called by Ollama, so while the loop will intercept if the OpenAI package accurately pulls out a function call, sometimes that doesn't happen and then we don't detect that a function call was requested.