aicoolies logo

Checkly

API and browser monitoring as code

Share
freemium
Visit Website →

Checkly is an active reliability platform for developers and agents that combines Playwright browser checks, API checks, synthetic monitoring, monitoring-as-code, traces, status pages, alerts, and Rocky AI analysis. It helps teams run code-defined production checks from global and private locations instead of relying only on pre-deploy tests.

We have a review for this tool

A detailed review by the aicoolies team — click to read

Developer-owned active reliability

Checkly positions itself as an active reliability platform for developers and agents, combining synthetic monitoring, Playwright browser checks, API checks, monitoring-as-code, status pages, traces, alerting, and Rocky AI analysis. The value is strongest for teams that want production checks to live close to code, CI, and deployment workflows instead of being owned only by a separate monitoring dashboard.

Current pricing anchor

The current public pricing page lists Hobby at $8 per month, Starter at $24 per month, Team at $64 per month, and Enterprise as custom. Plan limits differ across Browser/Playwright checks, API checks, agentic checks, locations, alerts, status pages, and observability features; for example, Team includes larger browser and API check quotas, one included agentic check, broader locations, and SMS or webhook alerting. Older $40-style plan references should not be used as the current default price.

Workflow fit

Checkly is a good fit for product engineering, DevOps, SRE, and QA teams that already trust Playwright or code-defined API tests and want those checks to keep running after deployment. It supports CLI-based workflows, private locations, traces, screenshots, incident integrations, and Git-based check definitions, but it is still a hosted monitoring product rather than a replacement for full logs, metrics, tracing, or a self-hosted observability stack.

Pricing

Hobby $8/mo, Starter $24/mo, Team $64/mo, Enterprise custom; quotas vary for Browser/Playwright, API, agentic checks, locations, alerts, and status pages.

Platforms

Web app, CLI, monitoring-as-code, Playwright/API checks, private locations, traces, status pages, incident integrations

Categories

Tags

Use Cases

Alternatives

Vitest logo

Vitest

Blazing fast Vite-native testing

Next-generation testing framework powered by Vite for blazing-fast execution. Jest-compatible API with native ESM support, TypeScript out of the box, and in-source testing capabilities. The new default test runner for Vite-based projects, offering significantly faster test execution and a modern developer experience compared to Jest for projects using modern JavaScript tooling.

open-sourceOpen Source
Jest logo

Jest

Delightful JavaScript testing

Jest is Meta's open-source JavaScript and TypeScript testing framework with batteries-included support for unit, integration, and snapshot tests. Zero-config for most projects, it bundles its own test runner, assertion library, mocking utilities, code coverage, and parallel execution. The de facto standard for React, Node.js, Next.js, and modern JS apps, and a common target for AI-generated test suites.

open-sourceOpen Source
Playwright logo

Playwright

Reliable end-to-end testing

Cross-browser E2E testing framework by Microsoft supporting Chromium, Firefox, and WebKit with one API. Features auto-waiting, tracing with timeline/screenshots/DOM snapshots, codegen for recording tests, and parallel execution. Component testing for React, Vue, Svelte. Built-in API testing, network mocking, and mobile emulation. Known for reliability and speed vs Selenium/Cypress. 70K+ GitHub stars, rapidly becoming the E2E standard.

open-sourceOpen Source
Keploy logo

Keploy

AI-powered API testing with traffic recording

Keploy is an open-source AI-powered testing platform that generates API, integration, and unit tests by recording real network traffic via eBPF. It captures API calls, database queries, and streaming events, then replays them as deterministic tests with auto-generated mocks — no code changes needed. Works across any language or framework with CI/CD pipeline integration and popular testing framework support including JUnit, PyTest, Jest, and Go-Test.

open-sourceOpen Source

Related Tools

Safari MCP Server

Apple's Safari-native MCP server for web debugging agents

Safari MCP Server is Apple's safaridriver-based MCP server in Safari Technology Preview, giving compatible coding agents local access to Safari page content, console logs, network requests, screenshots, JavaScript evaluation, interactions, viewport controls, and accessibility/performance checks.

freeTelemetry
rampart

Rampart

Microsoft’s pytest-native red teaming framework for turning AI agent safety findings into CI tests.

RAMPART is an open-source Microsoft framework for safety and security testing of agentic AI applications. It brings red-team findings into a pytest-native workflow so teams can turn prompt injection, unsafe tool use, and behavioral boundary failures into repeatable regression tests. The strongest aicoolies angle is developer workflow: RAMPART makes agent safety part of CI/CD instead of a one-off security review.

open-sourceOpen Source
Requestly logo

Requestly

One tool for intercepting, mocking, and replaying HTTP — acquired by BrowserStack

Requestly is a BrowserStack-backed API client, HTTP interceptor, mock server, and session replay tool for frontend and QA teams. Its current product is commercial/API-client led, while the legacy interceptor/open-source code is AGPLv3. The free plan covers individual workflows, and Pro lists at $12/user/month monthly or $9/user/month annually for collaborative QA and frontend debugging teams.

freemium
Browserbase logo

Browserbase

Headless browser cloud built for AI agents

Browserbase is cloud infrastructure that runs headless Chromium browsers on demand for AI agents and automation workflows, exposing Playwright, Puppeteer, and Selenium endpoints with built-in session replay, residential proxies, CAPTCHA solving, and stealth fingerprints. It also hosts Stagehand and a Model Gateway, letting teams build browser-using agents without maintaining their own fleet of Kubernetes-managed Chromium instances.

freemium
Anchor Browser logo

Anchor Browser

Cloud browser infrastructure for AI agents

Anchor Browser provides secure cloud-managed browser infrastructure for computer-use agents. Deploy humanized Chromium instances that access any website while maintaining bot-detection evasion and authentication support. Features OmniConnect for authentication lifecycle management, Web Action Cache for deterministic workflows, and built-in VPN infrastructure. Includes free tier and paid plans supporting millions of concurrent browser sessions for scalable agent automation.

freemium
RagaAI Catalyst logo

RagaAI Catalyst

AI testing and evaluation for agents and LLM apps

RagaAI Catalyst is a comprehensive Python SDK for observability, monitoring, and evaluation of LLM and agentic applications. Provides agent tracing with execution graph visualization, self-hosted dashboard with analytics, synthetic data generation, multi-metric evaluation framework, and guardrail management. Built for teams running production RAG systems and AI agents who need systematic testing, debugging, and performance optimization workflows.

open-sourceOpen Source