Verity Suite – Agent Action Guardrail Check

Choose this endpoint when you need a calibrated, fail-closed guardrail layer before an autonomous agent executes a consequential or irreversible action — especially when you need auditable, cryptographically signed receipts of the gate decision. It is particularly well-suited for multi-agent pipelines where human oversight is impractical at every step, or where policy compliance must be demonstrable. Prefer it over rule-based filters when the action space is open-ended and requires semantic risk assessment rather than simple keyword matching.

• Missing required `action` field returns a validation error
• Action or policy strings exceeding 2000 characters are rejected
• Network timeout if the service is unavailable (fail-closed design means agents should treat timeouts as implicit blocks)
• Invalid HTTP method (only POST/PUT/PATCH accepted for the inner body type)
• Insufficient USDC balance causes payment failure before the check executes