Skip to content
AImpact
IT EN
Agents Beginner Also known as: Function calling · Uso di strumenti · Chiamata di funzione

Tool use

The model's ability to return a structured request to run an external function (search the web, read a file, write to a database) and then resume reasoning with the result.

ShareLinkedInX

In practice

You declare the functions with name, parameters, and description; the model picks when to call them. It is the building block of every agent. Validate arguments carefully: the model sometimes invents parameters or forgets them.

Related terms

Agent MCP

Seen in the wild

11 entries mentioning it
  1. OpenAI o3 and o4-mini: reasoning models learn to use tools
    High
  2. LM Studio + MCP: local models connected to the world without cloud APIs
    High
  3. Hugging Face smolagents: agents that write code instead of JSON
    Medium
  4. Model Context Protocol: the open standard to connect LLMs and data
    High
  5. Open WebUI: Tools and Functions bring ChatGPT Enterprise to self-hosting
    High
  6. Cohere Command R+: an enterprise-focused model built for RAG and tool use
    Medium
  7. Claude 2.1: 200K context and fewer hallucinations
    High
  8. Function calling: GPT learns to speak JSON
    High
  9. ChatGPT Plugins: the LLM becomes an interface to the web
    Medium
  10. Toolformer: the LLM that learns to use tools on its own
    High
  11. ReAct: the framework that unites reasoning and acting in LLMs
    Landmark
← All terms