Checkly, a monitoring tool, is expanding its capabilities to include network monitoring with TCP checks. This feature allows users to monitor critical non-HTTP services directly in Checkly without adding extra tools to their stack. With TCP checks, users can verify connections, detect failures proactively, and validate server responses, making it easier to ensure application reliability across the entire infrastructure. The feature is designed to be integrated seamlessly into development and monitoring workflows, allowing users to define, version-control, and automate TCP monitors alongside other monitors, and can be used for various applications such as mail servers, custom TCP services, firewalls, and network rules. Checkly's TCP checks provide advanced features like data exchange and assertions, private locations, and flexible fail conditions, making it a powerful tool for monitoring TCP-based infrastructure. The feature is included in the existing API check quota and is billed at $2 per 10,000 runs.