Glossary term
Glossary term
Agentic Systems
Standard for validating structured JSON data.
OpenAI's Structured Outputs feature uses JSON Schema to guarantee that GPT-4o responses match a developer-defined schema - used by Notion to ensure AI-generated database entries always have correct field types.
Anthropic Claude's tool-use API validates tool call arguments against a JSON Schema before execution - a misconfigured argument (e.g., string where integer expected) is caught before hitting the downstream API.
Instructor (open-source library) uses JSON Schema to extract structured data from LLM responses across OpenAI, Anthropic, and Cohere APIs - used in hundreds of production applications for reliable data extraction.