The AGPC Domain Check API allows developers to verify key email authentication records for any domain, including SPF, DKIM, DMARC, and MX. It generates a graded report that can be shared, helping users understand the security posture of their email configurations.

This API is useful for developers building tools to monitor or audit email domain settings, ensuring compliance with best practices to reduce spoofing and phishing risks. Since it requires no authentication, it is easy to integrate and use for quick checks.

By providing a consolidated view of multiple email authentication standards with a grading system, the API simplifies the process of assessing domain email security, making it relevant for security analysts, email administrators, and developers focused on email deliverability and protection.