Speed Test API
The Industry Standard for Bandwidth Measurement
Add enterprise-grade speed testing to any platform in minutes. No infrastructure required.
Integrate in minutes with our JavaScript SDK, MCP server for AI agents, or CLI for automation. Download, upload, latency, and jitter. Trusted by developers since 2013.
Already have an account? Log in
Built for Real-World Applications
White-Label Speed Tests - Your branding, our engine
Network Analytics - Benchmark connections across your user base
Adaptive Streaming - Auto-adjust quality based on real bandwidth
ISP Diagnostics - Pinpoint connectivity issues instantly
Smart Transfers - Accurate ETAs for file operations
IoT Ready - Lightweight enough for embedded devices
Why Thousands of Developers Choose Us
Battle-Tested Since 2013 - The original speed test API, proven at scale
Real-World Accuracy - Measures what users actually experience
Deploy in Minutes - Skip months of development. Ship today.
Scales With You - From prototype to millions of tests
AI Agent Integration
Run speed tests directly from AI agents and automation tools
MCP Server - Native integration with Claude, Cursor, Windsurf, and other AI platforms via Model Context Protocol
CLI Tool - Command-line speed testing for scripts, CI/CD pipelines, and automation workflows
JavaScript SDK - Promise-based API for Node.js applications. Same package, three interfaces
Local History - Results stored locally in JSON format for trending and analysis
Analytics Dashboard
Real-time insights into your API usage
Usage Statistics - Track API calls, test counts, and bandwidth consumption in real-time
Geographic Distribution - See where your users are testing from with country and city breakdowns
Device & Speed Insights - Monitor device types, average speeds, and latency trends
$0.138/extra test
Technical Support
$0.045/extra test
Technical Support
$0.015/extra test
Technical Support
Ship Your Speed Test Feature This Week
No credit card required
Full API access for 30 days
Cancel anytime - no strings attached
* Free trial includes 100 API calls.
Check out our free sample bandwidth dataset on AWS Marketplace.
Already have an account? Log in
Quick Start: Add a Speed Test in Minutes
Embed the speed test on any web page with a few lines of JavaScript.
<script src="https://speedof.me/api/api.js"></script>
<script>
SomApi.account = 'YOUR_API_KEY';
SomApi.domainName = 'yourdomain.com';
SomApi.onTestCompleted = function (result) {
console.log(result.download, result.upload, result.latency, result.jitter);
};
SomApi.startTest();
</script>Full configuration, callbacks and the result schema are in the API documentation, with ready-to-run code in the integration examples.
Speed Test API FAQ
How do I add a speed test to my website or app?
Include our JavaScript API (api.js), set your account key and domain, then call SomApi.startTest(). Download, upload, latency and jitter arrive via callbacks. Ready-made examples cover vanilla JS, React, Vue, Angular, iOS, Android, Flutter, Electron and more.
Is the speed test API free?
It is a paid API with a free trial: 30 days and 100 test calls, no credit card required. Paid plans start at $49/month and scale to Enterprise for high volume.
What does the API measure?
Download speed, upload speed, latency and jitter, using the same single-stream HTML5 engine as SpeedOf.Me for real-world accuracy.
Can AI agents and scripts run speed tests?
Yes. The @speedofme/mcp package is an MCP server for AI agents, a CLI for scripts and CI pipelines, and a Node.js SDK, all from one install.
Which platforms are supported?
Web (JavaScript), plus example integrations for iOS, Android, macOS, Windows, Electron, Flutter, React, Vue, Angular and React Native.
Have more questions? Read the full FAQ →