Defining Custom Rulesets

Beyond basic schema validation, Exogram supports complex, cross-field logical business rules defined using OPA (Open Policy Agent) Rego policies.

Example Policy

package exogram.admissibility

default verify = false

verify {
  input.action == "refund"
  input.amount <= 50.00
}

This policy guarantees an autonomous customer service agent cannot issue a refund greater than $50.00.