InstructorPHP

Articles

Field notes, tutorials, and implementation guidance for InstructorPHP.

Observing a Tool-Using Agent in PHP

How to see agent steps, tool calls, continuation decisions, terminal state, and verified side effects with InstructorPHP.

How to see what happened inside structured-output calls, validation retries, logs, and traces.

How to turn model responses into typed PHP data that application code can trust.

A PHP take on Jason Liu's talk: use your own classes and validators to make model output safe to store, route, and bill against.