Tools

1. Toolformer - Process where the model is fine-tuned to use tools.
2. Function calling - The model can call functions to get information or do actions.
3. MCP - Exactly same as function calling, just adds standards to function calling.

Route of API request flow

With Toolformer, the API request goes to the LLM. The LLM then calls the external API. With function calling and MCP, the LLM asks the client to call the external API. The client calls it and sends the response back to the LLM.