Reference

Lookup material: exact names, parameters, defaults and limits. The other sections explain how a feature works and when to use it; these pages are what you check when you need the precise value.

• Agent toolsThe tools OAR adds to the agents it runs — relay_tool, preview and ask_user — who gets which, under what name, and what you control.
• oar commandEvery command and flag of the oar command line in OAR 0.9.19 - setup, start, stop, restart, status, url, update, service, autostart, uninstall, copilot, doctor - with exit codes.
• config.jsonThe relay's configuration file — where it is, who writes it, when a change applies, and every key it reads, with type, default and effect.
• Environment variablesEvery environment variable you can set for OAR 0.9.19 - the installer, the relay, previews, the tunnel and each provider - with values, defaults and what wins over what.
• SettingsEvery control in the Settings dialog of the OAR web UI, tab by tab: label, kind, default, range, where it is stored and what it does.
• Files and foldersWhere OAR keeps its config, database, logs and uploads, what is safe to delete, where secrets live, what is cleaned up by itself, and what stays outside the state folder.