Valid JSON can still be wrong. Your AI handoff looks tidy. The next tool can read it. But did it drop the owner, invent a field, or move the work forward before review? Try this starter: 1. Pick one small handoff: owner, due date, review status, next action. 2. Make one required field disappear. 3. Ask: would your workflow notice before doing anything? The full guide adds the missing piece: a local JSON Schema checker, six practice files, and a deliberate trap that passes the schema while getting a fact wrong. We ran the checker on authored fictional data. We did not run a model or measure AI accuracy. A passing schema is a reason to continue checking—not permission to act. Get the complete walkthrough and exercise at: https://jabsystems.io/ai-anonymous/json-schema-check-the-handoff AI Anonymous by JABSystems Practical field notes for people who build, question, and use AI. #AIAnonymous #JABSystems #JSONSchema #AIWorkflows #PracticalAI