Structured output is machine-readable data returned in a predictable format, such as JSON objects, typed fields, or labeled values. Instead of free-form text, the service returns fields that software can parse reliably, like status, score, or action. This is common in APIs, AI systems, and security tools that need automation rather than human interpretation.
In cyber security, structured output matters because downstream systems often trust the shape of the response. If an attacker can alter, inject, or reformat that output, parsers may misread the result, accept unsafe values, or break workflows. Defenders use schemas, type validation, allowlists, and strict response parsing to reduce this risk. In AI-driven services, structured output also helps preserve control boundaries: if an intermediary sits between the client and the real service, it can reshape fields or hide where data came from. That makes predictable formatting useful not only for convenience, but for integrity and accountability.