{"type":"video","version":"1.0","html":"<iframe src=\"https://www.loom.com/embed/875737ef981f4b378a005be62d1e435b\" frameborder=\"0\" width=\"1920\" height=\"1440\" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>","height":1440,"width":1920,"provider_name":"Loom","provider_url":"https://www.loom.com","thumbnail_height":1440,"thumbnail_width":1920,"thumbnail_url":"https://cdn.loom.com/sessions/thumbnails/875737ef981f4b378a005be62d1e435b-51a8f17b233e44d7.gif","duration":1157.267,"title":"From Fresh Sandbox to First PR: An Open Harness Demo Guide","description":"This Loom demonstrates Open Harness, a sandboxed Docker-based environment with a unified file system for popular agent harnesses. The video shows installing with a command that verifies dependencies like Docker, Git, and build essentials, then selecting a sandbox name (OH-SBX-1) and optional harnesses including Claude Code, Pi, Hermace, Groq Build, and Agent Browser, with an option to not mount the host Docker socket. It explains how to configure and access the sandbox via make shell, attach using VS Code, and run health checks across both Claude and Pi, noting shared setup through a .OH folder and symlinks. It also shows GitHub authentication via GHCLI over SSH, creating a test repo, and generating an issue and draft PR for a new project."}