Plan mode for complex features. We help software engineers write detailed software specifications that give your coding agents superpowers.

San Francisco
Joined June 2025
OpenSpec (YC W26) retweeted
OpenSpec is about to get 10x better. We've spent the past year learning from developers and teams using OpenSpec every day. Now we're bringing those lessons into our own custom-built agent harness. Our goal is simple: help developers stay involved in the decisions that matter, better understand the work being done, and ultimately have greater confidence in what agents produce. A completely new way to experience OpenSpec. We'll be releasing an early preview next week. Stay tuned!
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