SERVER

Bun Win32

Rank #2,859

io.github.ObscuritySRL/bun-uia

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

12 versions

21 GitHub stars

by ObscuritySRL (2 servers)View repository ↗

First listed

Jun 15, 2026

Last publish date

Jun 18, 2026

PURPOSE

What you can do with Bun Win32

Bun Win32 is a Model Context Protocol (MCP) server published by ObscuritySRL. It ranks #2,859 of 144,396 active servers on MCP Toplist, and its repository has 21 GitHub stars. Bun Win32 is listed on Official MCP, with 12 tracked versions. It was first listed on Jun 15, 2026 and most recently updated on Jun 18, 2026.

Not verifiedMCP Toplist has not yet written a checked profile for this server, so the paragraph above is assembled from registry data only. The repository README is the authority on what it does.

CAPABILITIES AND LIMITATIONS

What Bun Win32 can and cannot do

Not verifiedMCP Toplist has not catalogued this server's tools or limitations. The repository README lists them.

REQUIREMENTS

What you need before using Bun Win32

DeclaredNo credentialsNo credentials declared

The registry listing declares no required environment variables or authentication. This is declared metadata, not a verified install — the repository README is the authority.

Declared by the Official MCP Registry, last synced Oct 16, 2026. Not independently verified by MCP Toplist.

Declared in the registry install config

BUN_UIA_PROFILE · optional
BUN_UIA_OS · optional
BUN_UIA_ALLOW · optional
BUN_UIA_DENY · optional
BUN_UIA_CURSOR · optional
BUN_UIA_FS_ROOT · optional

INSTALLATION AND FIRST TASK

Connect Bun Win32 and confirm it works

npm package

claude mcp add bun-uia -e "BUN_UIA_PROFILE=<your BUN_UIA_PROFILE>" -e "BUN_UIA_OS=<your BUN_UIA_OS>" -e "BUN_UIA_ALLOW=<your BUN_UIA_ALLOW>" -e "BUN_UIA_DENY=<your BUN_UIA_DENY>" -e "BUN_UIA_CURSOR=<your BUN_UIA_CURSOR>" -e "BUN_UIA_FS_ROOT=<your BUN_UIA_FS_ROOT>" -- npx -y bun-uia

Replace each placeholder with your own value before saving.

npm package

[mcp_servers.bun-uia]
command = "npx"
args = ["-y", "bun-uia"]

[mcp_servers.bun-uia.env]
BUN_UIA_PROFILE = "<your BUN_UIA_PROFILE>"
BUN_UIA_OS = "<your BUN_UIA_OS>"
BUN_UIA_ALLOW = "<your BUN_UIA_ALLOW>"
BUN_UIA_DENY = "<your BUN_UIA_DENY>"
BUN_UIA_CURSOR = "<your BUN_UIA_CURSOR>"
BUN_UIA_FS_ROOT = "<your BUN_UIA_FS_ROOT>"

Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "bun-uia": {
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ],
      "env": {
        "BUN_UIA_PROFILE": "<your BUN_UIA_PROFILE>",
        "BUN_UIA_OS": "<your BUN_UIA_OS>",
        "BUN_UIA_ALLOW": "<your BUN_UIA_ALLOW>",
        "BUN_UIA_DENY": "<your BUN_UIA_DENY>",
        "BUN_UIA_CURSOR": "<your BUN_UIA_CURSOR>",
        "BUN_UIA_FS_ROOT": "<your BUN_UIA_FS_ROOT>"
      }
    }
  }
}

Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "bun-uia": {
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ],
      "env": {
        "BUN_UIA_PROFILE": "<your BUN_UIA_PROFILE>",
        "BUN_UIA_OS": "<your BUN_UIA_OS>",
        "BUN_UIA_ALLOW": "<your BUN_UIA_ALLOW>",
        "BUN_UIA_DENY": "<your BUN_UIA_DENY>",
        "BUN_UIA_CURSOR": "<your BUN_UIA_CURSOR>",
        "BUN_UIA_FS_ROOT": "<your BUN_UIA_FS_ROOT>"
      }
    }
  }
}

Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.

npm package

{
  "servers": {
    "bun-uia": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ],
      "env": {
        "BUN_UIA_PROFILE": "<your BUN_UIA_PROFILE>",
        "BUN_UIA_OS": "<your BUN_UIA_OS>",
        "BUN_UIA_ALLOW": "<your BUN_UIA_ALLOW>",
        "BUN_UIA_DENY": "<your BUN_UIA_DENY>",
        "BUN_UIA_CURSOR": "<your BUN_UIA_CURSOR>",
        "BUN_UIA_FS_ROOT": "<your BUN_UIA_FS_ROOT>"
      }
    }
  }
}

Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "bun-uia": {
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ],
      "env": {
        "BUN_UIA_PROFILE": "<your BUN_UIA_PROFILE>",
        "BUN_UIA_OS": "<your BUN_UIA_OS>",
        "BUN_UIA_ALLOW": "<your BUN_UIA_ALLOW>",
        "BUN_UIA_DENY": "<your BUN_UIA_DENY>",
        "BUN_UIA_CURSOR": "<your BUN_UIA_CURSOR>",
        "BUN_UIA_FS_ROOT": "<your BUN_UIA_FS_ROOT>"
      }
    }
  }
}

Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.

npm package

{
  "mcpServers": {
    "bun-uia": {
      "command": "npx",
      "args": [
        "-y",
        "bun-uia"
      ],
      "env": {
        "BUN_UIA_PROFILE": "<your BUN_UIA_PROFILE>",
        "BUN_UIA_OS": "<your BUN_UIA_OS>",
        "BUN_UIA_ALLOW": "<your BUN_UIA_ALLOW>",
        "BUN_UIA_DENY": "<your BUN_UIA_DENY>",
        "BUN_UIA_CURSOR": "<your BUN_UIA_CURSOR>",
        "BUN_UIA_FS_ROOT": "<your BUN_UIA_FS_ROOT>"
      }
    }
  }
}

Replace each placeholder with your own value before saving.

First successful task

After adding the config, ask your client to list this server's tools. A tool list confirms the connection; an empty list or an error means the server did not start or needs credentials.

ALTERNATIVES

When to choose another server

Other servers by ObscuritySRL

umbriel#30,335

View all ObscuritySRL servers →

No task-specific alternatives are catalogued for Bun Win32yet; the list above is its publisher's other servers.

MAINTENANCE AND EVIDENCE

What changed, and when this was checked

First listed: Jun 15, 2026
Latest version published: Jun 18, 2026
Version history: 12 versions tracked (below)
Requirements evidence: Declared by the Official MCP Registry, last synced Oct 16, 2026. Not independently verified by MCP Toplist.
Profile checked: Not yet — purpose, capabilities and requirements above come from registry data only
Ranking data as of: Jun 18, 2026

Registry sightings

Official MCP ↗listed since Jun 15, 2026 · still listed

Do you maintain Bun Win32? to correct or enrich this profile.

VERSIONS

Available versions (12)

Version	Published
1.9.1	Jun 18, 2026
1.9.0	Jun 17, 2026
1.8.0	Jun 17, 2026
1.7.0	Jun 17, 2026
1.6.4	Jun 17, 2026
1.6.3	Jun 17, 2026
1.6.2	Jun 16, 2026
1.6.1	Jun 16, 2026
1.6.0	Jun 16, 2026
1.5.0	Jun 15, 2026
1.4.0	Jun 15, 2026
1.3.0	Jun 15, 2026

STANDING

#2,859of 144,396 active serversTop 5%

Ranks ahead of 141,537 of 144,396 servers on MCP Toplist.

BADGE

Show your rank

Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.

Markdown

[![MCP Toplist](https://mcptoplist.com/badge/io.github.ObscuritySRL%2Fbun-uia.svg)](https://mcptoplist.com/server/io.github.ObscuritySRL%2Fbun-uia)

HTML

<a href="https://mcptoplist.com/server/io.github.ObscuritySRL%2Fbun-uia"><img src="https://mcptoplist.com/badge/io.github.ObscuritySRL%2Fbun-uia.svg" alt="MCP Toplist: Top 5% of 144,396" /></a>

Variants: append ?metric=score or ?metric=stars to the image URL.

FAQ

Frequently asked questions

Who maintains Bun Win32?: Bun Win32 is maintained by ObscuritySRL, which publishes 2 MCP servers (20 total versions) tracked on MCP Toplist.
Is Bun Win32 listed on the Official MCP Registry?: Yes — Bun Win32 is listed on the Official MCP Registry.
How many versions does Bun Win32 have?: MCP Toplist tracks 12 versions of Bun Win32, most recently published on Jun 18, 2026.
Where can I find the source code for Bun Win32?: The source code for Bun Win32 is hosted at github.com/ObscuritySRL/bun-win32.

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