MCP For Claude Marketplace
UserStack User-Agent Lookup

UserStack User-Agent Lookup MCP Connector for Claude

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Universal User-Agent intelligence — detect devices, browsers, and OS via AI.

1 tools Official Updated Jun 28, 2026 Official Vinkius Partner
More Details Connect to Claude

Equip your AI agent with real-time browser and device intelligence through the UserStack MCP server. This integration provides instant parsing of User-Agent strings to identify the device type (mobile, desktop, tablet), brand, operating system, and browser version. Your agent can also detect crawlers and bots with high precision. Whether you are auditing web traffic, personalizing user experiences, or researching device distributions, your agent acts as a dedicated technical analyst through natural conversation.

What you can do

  • UA Parsing — Decode complex User-Agent strings into structured device and browser data.
  • Bot Detection — Identify if a request is coming from a human user or a search engine crawler.
  • Technical Auditing — Verify the OS and browser capabilities of specific web clients.
  • Device Profiling — Retrieve brand and model information for mobile and desktop systems.

How it works

  1. Subscribe to this server
  2. Enter your UserStack Access Key (get it at userstack.com)
  3. Start detecting User-Agents from Claude, Cursor, or any MCP-compatible client

Who is this for?

  • Web Developers — quickly debug and analyze User-Agent data for testing.
  • Security Analysts — identify suspicious agents or bot activity in web logs.
  • Digital Marketers — profile the technology used by website visitors.
  • Operations Teams — automate the classification of incoming web requests.
user-agentdevice-detectionbrowser-parsingweb-analyticsbot-detection

1 tools expose this connector's capabilities to your AI agent.

detect_user_agent

Identify device and browser from User-Agent

See how to talk to your AI agent using UserStack User-Agent Lookup.

Detect this User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36

Parsing User-Agent... I've identified this as a Desktop user on Windows 10 using Google Chrome version 91. It is not a search engine crawler.

Is this a bot? 'Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)'

Checking agent... Yes, this is identified as Googlebot version 2.1, a verified search engine crawler from Google.

Identify the device brand for this UA: 'Mozilla/5.0 (iPhone; CPU iPhone OS 14_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Mobile/15E148 Safari/604.1'

Analyzing... This User-Agent belongs to an Apple iPhone running iOS 14.6. The browser is Safari mobile version 14.1.1.

Yes! Use the `detect_user_agent` tool. The response will include the device brand ('Apple') and the specific model or type if available in the UA string.

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