Checkly

Platform

Synthetic monitoring with API checks and Playwright tests from 22+ locations

Price: Free tier, then paid
Access: API key and account ID

About

Checkly runs API checks, uptime monitors and Playwright browser tests on a schedule from 22+ public locations and alerts you when they fail. Monitors are defined as code in TypeScript and deployed from CI. It is not an APM or a log store.

What you can do with it

Run Playwright end-to-end tests against production every few minutes
Monitor URLs, APIs, TCP and DNS endpoints and get alerted on failures
Publish a status page and open incidents when checks fail

Get started

Create a project with npx checkly init
Log in with npx checkly login
Test with npx checkly test, then ship with npx checkly deploy

Example

// __checks__/homepage.check.ts
import { Frequency, UrlAssertionBuilder, UrlMonitor } from "checkly/constructs"

new UrlMonitor("homepage", {
  name: "Homepage",
  frequency: Frequency.EVERY_5M,
  request: {
    url: "https://example.com",
    assertions: [UrlAssertionBuilder.statusCode().equals(200)],
  },
})

Details

Hosting: Hosted service
Available in: Worldwide
Official SDKs: JavaScript/TypeScript
MCP server: Remote