AgentVidia

Structured Output Prompting (JSON/XML)

October 13, 2026 • By Abdul Nafay • Prompt Engineering for Agents

Strategic report on Structured Output Prompting (JSON/XML) within the Prompt Engineering for Agents sector. Architecting the next generation of autonomous enterprise intelligence.

The Logic of Agent-to-Machine Communication

Agents must talk to tools, and tools don't understand English. **Structured Output Prompting** is the practice of forcing the model to wrap its thoughts and actions in strict JSON or XML schemas that can be parsed by your code.

Enforcing the Schema

We use "Rigid Formatting" to ensure system stability:

  • The JSON Schema: Providing a full Pydantic or TypeScript interface description directly in the prompt.
  • XML Tags: Using