Checkly is a monitoring and testing platform purpose-built for modern developers that combines synthetic monitoring, end-to-end testing, and API checks into a single workflow. It solves the gap between testing in CI/CD and monitoring in production by enabling teams to write Playwright-based tests that run both as pre-deployment checks and as continuous production monitors from global locations. Checkly's monitoring-as-code approach lets developers define checks alongside their application code, version them in Git, and deploy them through their existing CI/CD pipeline.
Checkly provides global monitoring from over 20 data center locations, Playwright-powered browser checks with full scripting capabilities, multi-step API monitoring with assertions and variable extraction, alerting via Slack, PagerDuty, OpsGenie, and webhooks, and a CLI for managing checks as code using JavaScript or TypeScript. It offers parallel test execution, detailed performance traces with screenshots and HAR files, and environment variable management for running the same checks across staging and production. The Checkly CLI integrates check definitions directly into the development workflow.
Checkly is designed for DevOps engineers, SRE teams, and full-stack developers who need to ensure their web applications and APIs are functioning correctly across global regions. It integrates with Vercel, GitHub Actions, GitLab CI, and other deployment platforms for pre-deployment testing, and connects with incident management tools for production alerting. Checkly is particularly well-suited for teams that want to bridge the gap between QA testing and production monitoring using the same Playwright scripts they already write for end-to-end testing.