Subtrace

Subtrace is a San Francisco, California-based software startup that develops zero-code network tracing and API observability platforms for backend engineering teams. The system utilizes eBPF technology to monitor application network traffic without requiring custom code instrumentation, granting developers real-time visibility into request payloads, connection latency, and HTTP headers. Operating with a core headcount of 2 employees, the enterprise serves platform engineers managing distributed applications within containerized ecosystems such as Docker and Kubernetes. Subtrace is backed by lead investor Y Combinator as a participant in the accelerator's Winter 2024 cohort, joining a developer tools portfolio network that includes recognizable brands like PagerDuty, GitLab, and Heroku. The firm's deployment model provides infrastructure diagnostics to early adopters like software company Trieve, functioning as an alternative to monitoring systems from Sentry and Datadog. Subtrace was founded in 2024 by former Google and Microsoft engineers Adhityaa Chandrasekar and Sachin Sridhar.

High-Level Overview

Subtrace is a zero-code network tracer designed to provide backend teams with full visibility into every HTTP request in their production infrastructure without requiring any code changes. It offers a Chrome DevTools-like interface that consolidates request details such as payload, latency, status, headers, and logs, enabling rapid issue resolution. The product primarily serves backend and full-stack developers, as well as engineering teams managing containerized environments like Docker and Kubernetes. By simplifying network debugging and monitoring, Subtrace addresses the common problem of fragmented backend observability, reducing incident resolution times from months to minutes for its users. Its growth is marked by adoption among Y Combinator companies and a growing open-source community, supported by a lean team and early funding[1][3][4].

Origin Story

Founded in 2024 by Adhityaa Chandrasekar and Sachin Sridhar, longtime friends and collaborators with backgrounds from IIT Madras and the University of Waterloo, Subtrace emerged from their shared experience in backend development and the challenges of monitoring complex containerized systems. The idea was to create a tool that brings comprehensive network visibility without the overhead of manual instrumentation or code changes. Early traction came from Y Combinator’s Winter 2025 batch and adoption by startups like Trieve, which demonstrated significant improvements in incident response times using Subtrace. The founders’ deep technical expertise and focus on developer experience have shaped the company’s evolution[2][3].

Core Differentiators

• Zero-Code Integration: Subtrace requires no code changes to monitor backend requests, enabling drop-in observability.
• Unified Interface: Combines system call tracing with network packet analysis in a single, intuitive UI similar to Chrome DevTools.
• Container-Native: Automatically discovers and attaches to container network interfaces, correlating traffic with container metadata (pods, services) in Kubernetes.
• Low Overhead: Uses eBPF (extended Berkeley Packet Filter) for kernel-level data capture, minimizing performance impact.
• TLS Decryption Innovation: Injects ephemeral TLS root certificates without root privileges to decrypt traffic securely.
• Open Source & Community: Actively developed on GitHub with a growing user base and community support.
• Multi-Platform Support: Works seamlessly with Docker, Kubernetes, and other container orchestration tools[1][3][6].

Role in the Broader Tech Landscape

Subtrace rides the rising trend of containerization and microservices architectures, where traditional network monitoring tools struggle to keep pace with dynamic, ephemeral environments. The timing is critical as enterprises increasingly adopt Kubernetes and Docker, demanding observability tools that integrate natively without disrupting performance. Market forces such as the growing complexity of backend systems, the need for rapid incident resolution, and the shift towards DevOps and SRE practices favor solutions like Subtrace. By simplifying network tracing and correlating system-level and network data, Subtrace influences the broader ecosystem by enabling more efficient debugging, improving reliability, and fostering better collaboration among backend teams[1][3][5].

Quick Take & Future Outlook

Looking ahead, Subtrace is poised to expand its feature set and deepen integrations with cloud-native environments, potentially adding advanced analytics and AI-driven insights to further accelerate troubleshooting. Trends such as increased adoption of service meshes, zero-trust security models, and edge computing will shape its evolution. As backend complexity grows, Subtrace’s zero-code, low-overhead approach positions it well to become a standard tool in developer toolkits for observability and network debugging. Its influence may extend beyond startups to larger enterprises seeking scalable, developer-friendly network tracing solutions, reinforcing its role as a critical enabler of modern backend reliability and performance.