Scriptable Monitoring for APIs

These aren't your basic uptime checks.

Speedway tests scripted transactional flows against multiple API endpoints so you can make sure your entire API stays fast, functional, and reliable.


Synthetic API monitoring builds bulletproof APIs.

When you're aiming for five nines uptime (99.999%), every second counts. Don't lose valuable seconds, minutes, or hours by discovering problems too late. Speedway's high-frequency testing and rapid alerting buys you time.

Passive APM tools like New Relic and Dynatrace are great, but they only tell you about most problems after they impact your users. Speedway's synthetic API monitors make actual API calls on a schedule, 24x7x365, so you can discover problems before your users do.

Simple UI-based scripting, with JavaScript when you need it.

Your mad coding skills helpful, but not strictly required! You can set up basic monitors with no code.

But when you need it, the full power of JavaScript is at your disposal. Use JavaScript code blocks to add looping, conditionals, parsing, and data extraction to your monitoring scripts.

For stateful, programmable monitoring of every API endpoint, you'll be glad to have a real scripting language.

Uptime isn't enough. Get eyes on your API's performance, too.

An API that's slow might as well be broken.

Speedway tracks your API's performance over time, so you can spot any hiccups or negative trends. Every time you deploy new code, it can potentially impact the response time of your API endpoints. Without Speedway you might not even know.

With multi-region monitoring, you'll gain insight into how internet latency impacts your API's response times for callers in different regions, and detect location-specific routing and DNS issues that could impact your API's global availability.

Geo-distributed API monitoring from multiple locations.
No monitoring infrastructure to deploy or babysit.

Budget-friendly, easy-to-grok pricing.

Monitoring Free
5 monitor scripts
1 region
Every hour
5,000 requests
10 users
Monitoring 99.9%
10 monitor scripts
2 regions
Every 10 minutes
100,000 requests
10 users
Monitoring 99.99%
25 monitor scripts
3 regions
Every 5 minutes
500,000 requests
10 users
Monitoring 99.999%
50 monitor scripts
5 regions
Every 1 minute
1,000,000 requests
10 users

Peace of mind is worth paying for

Focus on building your API and entrust the monitoring infrastructure to Speedway. A tiny slice of your team's budget will substantially reduce the risk of API breakage going undetected, and earn you the praise (or at least the appreciative silence) of your users.

You'll fix problems before they even experience them.

Speedway is the secret weapon you need for faster, more reliable APIs.

Monitor anything HTTP(S)

Speedway monitors all kinds of HTTP APIs: REST, GraphQL, JSON-RPC, XML-RPC, you name it. In fact, it works just fine for regular websites and web applications too. Anything HTTP(S).

Instant email and SMS alerts

The moment an API endpoint breaks, Speedway can send alerts to anyone on your team via SMS or email. Alerts include logs or a link to the monitor, so you can quickly find the root cause of the failure.

Awesome for Single Page Apps

Is your API the backend of a single page web application? Get a jump start on monitor scripting by recording API traffic with the Loadster Recorder browser extension!

Fully scriptable requests

Speedway's monitoring scripts support code blocks with the full power of JavaScript. Level up by adding loops, conditionals, and other control flow constructs to your API tests.

Response validation & capturing

Parse API responses to validate the contents, and extract dynamic values into variables to use in the next call. If your API is stateful, your monitors should be too.

Keep an API audit trail

What was your API returning at 2:13 AM last Tuesday? Let's check! Speedway stores the full HTTP requests and responses from every monitor cycle, so you can pin down exactly when something changed.

OpenAPI/Swagger integration

If your API has an OpenAPI (Swagger) specification, Speedway can pull in the spec so you can quickly add monitoring without switching between tools. If not, you can always create steps manually.

Built on the Loadster platform

Speedway is built on the Loadster testing platform. Once you master Speedway scripting, you can load test your API with the same scripts, to make sure it performs well even under heavy load.

Designed for DevOps teams

API performance and availability is a team effort. With Speedway, you or anyone on your DevOps team can create, manage, and respond to API monitors.

Got a question? Shoot us an email!