How to connect my mcp server tools to my ai agent

Questions
1

Hello n8n community please help me to solve this

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all good with my mcp server the tools are configured well idont get why the ai agent doesnt exucte the tool when i enter a chat
and when i test the tool without an ai agent it work very well like this
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2

Hi there, have you configured the AI system prompt to make it very clear that it has access to that MCP tools and on what situation should the ai agent call it and etc.?