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Bezlo MCP

Official registry Other

Bezlo MCP: device-preset mobile screenshots, layout diagnostics, see-and-act sessions.

Source code Documentation

Install

Add this to your client's MCP configuration (Claude Desktop: claude_desktop_config.json; Cursor: .cursor/mcp.json; VS Code and others use the same "mcpServers" shape).

NPM package bezlo-mcp
Claude Code 
claude mcp add bezlo-mcp -- npx -y bezlo-mcp@0.1.2
JSON configuration (Claude Desktop, Cursor, VS Code) 
{
    "mcpServers": {
        "bezlo-mcp": {
            "command": "npx",
            "args": [
                "-y",
                "bezlo-mcp@0.1.2"
            ]
        }
    }
}

Documentation

From the project's README on GitHub, refreshed weekly. Links open on GitHub.

Contents
  1. Bezlo — open agent layer
  2. Install
  3. Quick CLI
  4. GitHub Action
  5. Engines
  6. License

Bezlo — open agent layer

Bezlo puts any web page inside a true-to-size iPhone / iPad / Android frame and lets an AI agent see it and act on it: screenshots, interactive-element lists, layout diagnostics (overflow, safe-area, touch identity), console/page errors, network mocks, tap/type/scroll flows, device matrix runs — and report.json / JUnit / mp4 evidence.

This repository is the MIT-licensed agent layer:

  • mcp/ — MCP stdio server + CLI + session/capture engine (also on npm as bezlo-mcp)
  • action.yml + examples/ — composite GitHub Action (PR screenshots + JUnit + video)
  • skill/ — the bezlo-preview skill for Claude Code / skills-compatible agents
  • server.json — official MCP registry manifest
  • docs/MCP.md — full tool reference

The Chrome extension itself is proprietary and lives in a separate private repo (extension/, store art, brand). This repository contains no extension code, store assets or brand artwork. The name Bezlo and its logo are not licensed for reuse.

Install

# MCP (Claude Code / Claude Desktop / Cursor)
npm install -g bezlo-mcp
claude mcp add bezlo -- npx -y bezlo-mcp

# or run from a checkout
node mcp/cli.mjs --list

The package bundles no browser: install Chrome/Chromium (or set RP_CHROME). Chrome for Testing is recommended; WebKit mode additionally needs npx playwright install webkit.

Quick CLI

node mcp/cli.mjs --url http://localhost:3000 --device iphone16 --out shot.png
node mcp/cli.mjs --url http://localhost:3000 --matrix --devices iphone16,ipadpro11,px10 --out ./matrix
node mcp/cli.mjs --url http://localhost:3000 \
  --actions '[{"type":"click","text":"Sign in"},{"type":"type","selector":"#email","value":"a@b.c","submit":true}]' \
  --record --assert '[{"type":"noOverflow"},{"type":"noConsoleErrors"}]' --out after.png

GitHub Action

- uses: gba3124/bezlo@main
  id: bezlo
  with:
    url: http://localhost:3000
    device: iphone16
    steps: '[{"type":"click","text":"Sign in"}]'
    asserts: '[{"type":"noOverflow"},{"type":"noConsoleErrors"}]'
    record: 'true'

Artifacts: final screenshot, report.json, junit.xml, optional mp4/gif. Outputs: pass, report, junit, video, gif, screenshot, artifacts.

Engines

  • chromium (default) — Chrome's own emulation engine (same as the extension's frames): real touch, mobile UA and client hints, DPR; full recording and CDP accessibility.
  • webkit — Playwright WebKit, a Safari-flavoured approximation (not real iOS Safari; no recording / CDP a11y).

License

MIT — see LICENSE. The Chrome extension, store assets and the Bezlo brand are not covered by this license and are not part of this repository.

Frequently asked questions

What is Bezlo MCP?

Bezlo MCP: device-preset mobile screenshots, layout diagnostics, see-and-act sessions.

How do I install Bezlo MCP?

It runs on your machine. In Claude Code: claude mcp add bezlo-mcp -- npx -y bezlo-mcp@0.1.2. For other clients, paste the JSON configuration from this page into their MCP settings.

Does Bezlo MCP need an API key?

Its registry entry lists no required key or secret. Some features may still need an account with the service it connects to.

Is Bezlo MCP open source?

Yes. Its code is on GitHub under the MIT license.

Who maintains Bezlo MCP?

It is published by gba3124. AI.tn lists it but does not maintain or endorse it.

From the official MCP Registry. Listing is not an endorsement: review a server's code and permissions before giving it access to your data.