Traceback
Browser-based software testing, with Oplo as the customer-facing product.
As AI coding tools got better, we found ourselves letting them write most of our code, only for them to ask us to test what they had just written. Why was an agent asking a human to do the testing for it?
I co-founded Traceback to close that loop. Our testing software follows plain-language instructions in a real browser, uses the application, and returns screenshots, logs, and failure reports. The product has been used across more than 50 codebases, with GitHub, Linear, and Slack integrations bringing testing into development workflows.
As co-founder and CEO, I lead product direction, hiring, and customer discovery with a six-person team. Conversations with 49 engineering teams have shaped the work, including how coding agents can run user flows through MCP, inspect failures, and use the results to guide fixes.
We’re organizing the next phase around two names: Oplo is the product teams use, while Traceback remains the testing infrastructure behind it and the platform for developers embedding those capabilities. The broader system for checking software against specifications is still in development.