HumanLayer

HumanLayer is a coding agent IDE built for engineering teams working in complex codebases, organizing agent sessions, plan artifacts, git worktrees, and code diffs into shared task workspaces where multiple people and multiple agents can work in parallel. This launch adds live multiplayer prompting, letting teammates co-author a single prompt to an agent in real time, with each person able to type in the same input box and watch the other's changes as they happen. It extends the collaboration model the team shipped a few weeks earlier, which allowed sending a prompt into a colleague's running session, by making the act of writing a prompt itself a shared surface. In the demo, a collaborator is added to a session with an optional time limit, then both people work through the agent together, mixing typed prompts with inline comments on a release notes doc that the agent picks up and acts on before opening a pull request. The feature runs on whatever machine the session already uses, so there is no requirement to move work into a hosted cloud agent to collaborate. The company was founded by Dex Horthy, co-founder and chief executive of HumanLayer , and started as human-in-the-loop infrastructure for AI agents before growing into an AI coding IDE and collaboration platform for engineering teams working in complex codebases . This release matters for teams that have moved past single-developer agent use and are trying to coordinate multiple engineers and multiple agents against the same task without losing the ability to jump into a session and steer it together.