QTap

QTap is an eBPF-based agent designed to provide visibility into encrypted network traffic in modern cloud environments. It addresses the challenge of monitoring and analyzing communications between applications, services, AI agents, and external APIs or vendors when encryption obscures the contents of network traffic. By operating at the kernel level, QTap can introspect requests before encryption and responses after decryption, offering detailed insight without interfering with the encryption process itself.

The tool is deployed as a lightweight agent on target systems and does not require the use of proxies, certificate management, or any code or configuration changes to applications or networks. QTap integrates with existing infrastructure and observability pipelines, allowing users to upload payload data to S3-compatible endpoints and generate log entries with contextual information and links to persisted payloads. It is designed to have minimal performance impact and does not disrupt normal operations.

Key features include the ability to monitor all external API calls and responses, automatically capture failed requests with full context, track encrypted communications for compliance and security auditing, analyze encrypted traffic patterns for performance analysis, and troubleshoot issues in encrypted services. Users can configure monitoring rules for custom error detection or specific conditions through a component called Rulekit.

QTap supports cross-platform deployment across different Linux distributions and is intended for integration with existing logging and monitoring tools. The tool is positioned as a solution for organizations seeking to gain visibility into encrypted network traffic for purposes such as API monitoring, error detection, security auditing, performance analysis, and debugging.