Groq Function Calling Issue · AI Automation Agency Hub

Groq Function Calling Issue

I'm building an AI-powered Inventory Management System using n8n, Airtable, and the Groq API with an OpenAI-compatible chat model.

I've completed the CRUD operations (Create, Read, Update, Delete), but I'm facing an inconsistent issue.

Sometimes the AI works perfectly:

✅ Adds a new product

✅ Updates a product

✅ Deletes a product

✅ Retrieves inventory data

However, other times, when I ask something like:

"Add a new product: Keyboard, buy price 15, sell price 20, current stock 40, minimum stock 5"

instead of calling the tool correctly, it returns the function call as plain text:

<function>Create_a_record_in_Airtable</function>{"productName":"Keyboard","buyPrice":15,"sellPrice":20,"currentStock":40,"minimumStock":5}

Instead of actually executing the tool.

I'm using the Groq API through the OpenAI-compatible endpoint.

Has anyone experienced this behavior?

Is this a limitation of Groq's OpenAI-compatible API?

Is there a specific model that has more reliable tool/function calling?

Could this be a prompt issue, or am I missing a required configuration in n8n?

Are there best practices to make function calling more consistent?

Any advice or suggestions would be greatly appreciated. Thanks!

4 comments

Groq Function Calling Issue

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