AI tool definition basics for product managers

Master the AI tool definition to stop agents from ignoring your functions. A clear AI tool definition prevents broken agent workflows. When building with AI agents, the model relies entirely on how you describe available tools. If your agent grabs the wrong function, the issue usually lies in the tool card rather than your code. Think of it like a recipe card with three critical components. The model selects a tool by reading the description and nothing else. Meanwhile, the schema acts as a strict ingredient list, enforcing data types and required fields so the model cannot pass junk inputs. The tool card only describes the action, while your code executes the work. In this lesson: - The three core parts of a tool card - Why the model relies on the description - Using schemas to enforce strict input types - Describing a tool versus executing it U2xAI Academy - AI skills for product managers.