One Shot UI MCP Server

Deterministic screenshot diffing for AI coding agents. Turn a reference screenshot into structured data, diff any build against it - pixel, layout, color, and type - then get the exact CSS to fix. Or copy a UI's design language onto a brand-new screen. It runs locally over stdio via the published package.

People connecting browser automation tools to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-07-18 · ★ 4 · #126 OF 196 MAINTAINED BROWSER AUTOMATION · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install One Shot UI

before you install - you'll need

The README does not document required environment variables for a basic install.

Claude Code

claude mcp add tn0123-one-shot-ui -- npx -y one-shot-ui

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "tn0123-one-shot-ui": {
      "command": "npx",
      "args": [
        "-y",
        "one-shot-ui"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package one-shot-ui - unscoped; check the name against the project README before installing

registry namespace io.github.TN0123 is GitHub-verified and matches the repo owner

03 · Who maintains One Shot UI

one-shot-ui is maintained by tn0123. It's the only MCP server we track from this author; the repo dates to Mar 2026.

04 · Facts

repository: github.com/tn0123/one-shot-ui
category: browser automation - ranked #126 of 196 actively-maintained browser automation servers as of 2026-08-25.
registry: io.github.TN0123/one-shot-ui (active, first published 2026-06-02)
packages: npm:one-shot-ui

05 · One Shot UI FAQ

What is One Shot UI?

Is One Shot UI still maintained?

Yes - as of 2026-08-25, its last commit was 2026-07-18. We re-verify nightly.

How do I install One Shot UI?

Run `npx -y one-shot-ui`. The README does not document required environment variables for a basic install. You can also paste the ready-made client config above.

Does One Shot UI run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

06 · Alternatives to One Shot UI

Alternatives to One Shot UI

Maintained browser automation servers if One Shot UI isn't the fit.

Pairs well with

Servers that cover what One Shot UI doesn't - only shown when the pairing reason fits the companion.

More browser automation MCP servers · Helmdeck · Lystbot · Brave DevTools MCP · Vibatchium · KeyShot MCP

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