io.github.ObscuritySRL/bun-uia

io.github.ObscuritySRL/bun-uia · 20 stars · TypeScript

MCP server Playwright for the Windows desktop, from Bun — drive native GUIs via UI Automation + MCP.

Install

The repo has no one-line install. Follow its README.

From the server's entry in the official MCP Registry.

Name	Set as	What it is
`BUN_UIA_PROFILE`Optional	Env var	Capability profile: 'readonly' (inspect/read only), 'safe' (read + input + window — default), or 'full' (also os + fs tools).
`BUN_UIA_OS`Optional	Env var	Set to '1' to allow OS-level tools (launch_app, run_program, open_path) AND filesystem tools (read_file, write_file, list_dir) regardless of profile.
`BUN_UIA_ALLOW`Optional	Env var	Comma-separated tool names or categories to additionally allow on top of the profile.
`BUN_UIA_DENY`Optional	Env var	Comma-separated tool names or categories to deny, overriding the profile and BUN_UIA_ALLOW.
`BUN_UIA_CURSOR`Optional	Env var	Set to 'never' to forbid the real-cursor fallback entirely (strictly cursor-free). By default clicks/drags are cursor-free but fall back to the real hardware cursor when no cursor-free path exists.
`BUN_UIA_FS_ROOT`Optional	Env var	Sandbox root directory that read_file/write_file/list_dir are confined to when fs tools are enabled.