Show HN: Higherlevel, a Workspace for Defining and Reviewing AI-Agent-Built Software

Summary

Higherlevel is a beta collaborative workspace created to help product teams define and review software changes built with AI coding agents. Its creator says that delegating implementation made shipping complexity faster, but increased the time needed to understand the resulting behavior, explain requirements, request evidence, and determine whether the outcome matched the intended behavior. The product focuses on reviewing the final result rather than conducting traditional implementation-focused code reviews. Teams can document current behavior, limitations, and expected changes; express business rules and acceptance scenarios in Given/When/Then form; and require evidence such as screenshots or videos. They can comment on specifications, image regions, or video timestamps, discuss changes, track revisions, and approve results together. Higherlevel is aimed at complex B2B applications where a feature may involve many business rules, edge cases, and interactions with existing functionality. The beta is built with Elixir, Phoenix LiveView, and PostgreSQL.