Useragent MCP runs on your own machine — the client starts it, so there is no endpoint to ping. 480 installs a week from npm. Last commit 28 Oct 2026.
Parse user-agent strings into browser, engine, OS and device, and flag crawlers - fully local.
Today is the operative word: we check Useragent MCP every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add useragent-mcp -- npx -y @mrfentmen/useragent-mcp
{
"mcpServers": {
"useragent-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/useragent-mcp"
]
}
}
}
[mcp_servers.useragent-mcp]
command = "npx"
args = ["-y", "@mrfentmen/useragent-mcp"]
{
"mcpServers": {
"useragent-mcp": {
"command": "npx",
"args": [
"-y",
"@mrfentmen/useragent-mcp"
]
}
}
}
{
"servers": {
"useragent-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@mrfentmen/useragent-mcp"
]
}
}
}
Parse a User-Agent: browser, OS, device, plus bot, search crawler, AI crawler and AI agent flags.
Open automation engine for AI agents. Control live browsers and desktop apps locally.
Agentic AI quality engineering: run, debug and triage tests on real browsers and devices
International calls from your AI agent: price per minute and a Call link to the browser dialer.
End-to-end tests from one sentence: an agent drives a real browser, and passing runs replay free.
MCP server for JavaScript reverse engineering and browser debugging.
MCP server for JavaScript reverse engineering and browser debugging.
Korean web usage stats from real site logs: search engine, AI platform, browser, OS by industry.
Answers built from our own checks of this server.