Validation and Guardrails
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Lesson 5 of 8

Validation and Guardrails

Guardrails decide whether an AI result is safe and complete enough to continue automatically.

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Why this matters

Guardrails decide whether an AI result is safe and complete enough to continue automatically.

Validate

Check shape and allowed values.

Limit

Restrict what actions are possible.

Escalate

Route uncertain cases to a person.

Understand the working model

Validation should happen before actions with side effects: sending email, changing records, publishing content or spending money. A simple allowlist often provides more safety than another AI prompt.

Guardrails should be deterministic where possible. Use code for hard rules and AI for tasks that actually require interpretation.

Example
If category not in allowed list → stop. If confidence is low → human review. If recipient domain is external → require approval.
Practice

Apply the pattern above to one real task you already do. Keep the first version small enough that you can inspect every input and output.

Common mistake

Do not use a model to “approve itself” for a high-impact action.

Key takeaway

Put deterministic checks between AI output and any action that can change the outside world.

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