# Checkly

> Checkly is a developer-first synthetic monitoring and reliability platform that lets engineering teams define uptime, API, and browser checks as version-controlled code. Built on Microsoft's Playwright framework and OpenTelemetry, it runs checks from 20+ global locations and layers in AI-driven root cause analysis. Founded in 2018 and headquartered with roots in Berlin, Checkly serves 1,000+ customers - including Vercel, 1Password, CrowdStrike, and Mistral - and has raised $32.25M, most recently a $20M Series B led by Balderton Capital in 2024.

- **Founded:** 2018
- **Headquarters:** Berlin, Germany (US office: New York, NY)
- **Founders:** Hannes Lenke (CEO & Co-Founder), Tim Nolet (Co-Founder & Chief Evangelist), Timo Euteneuer (Co-Founder & COO)
- **Team size:** ~52 employees
- **Products:** Synthetic Monitoring, Checkly CLI, Uptime & Heartbeat Monitoring, Traces (OpenTelemetry), Rocky AI / AI Root Cause Analysis
- **Notable:** Raised $20M Series B led by Balderton Capital in 2024, bringing total funding to $32.25M., Grew to 1,000+ customers including Vercel, CrowdStrike, and 1Password., Runs approximately 32.5 million checks per day across 20+ global locations.

## Products & services

- **Synthetic Monitoring** — Playwright-powered browser and API checks that simulate real user journeys from 20+ global locations.
- **Checkly CLI** — JavaScript/TypeScript-native workflow to code, test, and deploy monitoring as version-controlled code.
- **Uptime & Heartbeat Monitoring** — HTTP/URL status checks and cron/job heartbeat monitors with granular alerting.
- **Traces (OpenTelemetry)** — Correlates a failed check to its corresponding OTel trace to pinpoint root cause across the stack.
- **Rocky AI / AI Root Cause Analysis** — AI that compares failures to the last passing run and reads related traces to explain what changed.
- **Agent Skills** — A monitoring skill that teaches AI coding agents to set up, review, and ship monitoring as code.
- **Status Pages & Alerts** — Public status pages plus intelligent alert routing to Slack, PagerDuty, webhooks, and more.
- **Terraform & Pulumi Providers** — Infrastructure-as-code providers to manage Checkly monitors alongside cloud resources.

## Achievements

- Raised $20M Series B led by Balderton Capital in 2024, bringing total funding to $32.25M.
- Grew to 1,000+ customers including Vercel, CrowdStrike, and 1Password.
- Runs approximately 32.5 million checks per day across 20+ global locations.
- Pioneered the 'Monitoring as Code' category with a TypeScript-native CLI.
- Shipped one of the first AI 'Agent Skills' for setting up production monitoring.

## Latest updates

- **2025-06** — Introduced Agent Skills - a monitoring skill that teaches AI coding agents to ship production-ready monitoring as code.
- **2025** — Rocky AI now automatically pulls related OpenTelemetry traces and compares failures to the last passing run to explain regressions.
- **2024-08** — Closed a $20M Series B led by Balderton Capital; Partner Colin Hanna joined the board.
- **2024** — Launched Checkly Traces, linking check failures to their corresponding OTel trace IDs.

## Links

- Website: https://www.checklyhq.com
- LinkedIn: https://www.linkedin.com/company/checkly
- Twitter/X: https://twitter.com/checklyhq
- GitHub: https://github.com/checkly
- YouTube: https://www.youtube.com/checklyhq

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Profile page: https://yespress.io/checkly
Published by YesPress — https://yespress.io
Last updated: 2026-07-22