Image: BrowserStack / prnewswire.com BrowserStack Launches Test Companion: An Agentic Testing Agent Built Into Your IDE
BrowserStack's Test Companion ships as a VS Code, JetBrains, Cursor, and Antigravity extension that handles test authoring, execution, debugging, and maintenance in one agentic loop — addressing the gap where AI coding agents write code but not tests.
BrowserStack announced Test Companion on July 29, an agentic AI for test automation that lives inside the IDE. It installs as an extension in VS Code, JetBrains, Cursor, and Antigravity, and handles the full test cycle: generation, authoring, execution, debugging, and maintenance.
The framing from BrowserStack’s CTO Nakul Aggarwal is pointed: “Any AI that only writes tests solves the easy part. Test Companion owns the full cycle.”
The context for that claim is a pattern playing out across engineering teams right now. A 2026 NBER study found that AI coding agents increased commits by 180%, while releases rose by just 30%. More code ships — but validating it hasn’t kept pace. General-purpose coding agents can generate test code, but they don’t have the context, infrastructure, or workflows needed across the testing lifecycle.
What it does
Test Companion works with the test frameworks developers already use: Playwright, Selenium, Cypress, Appium, WebdriverIO, and TestNG. From inside the IDE, it can:
- Generate test cases from requirements or existing code
- Author and refine tests with context from the codebase
- Execute tests against BrowserStack’s infrastructure (30,000+ real devices and browsers)
- Debug failures with root-cause analysis
- Perform test healing — updating tests when the code they cover changes
- Handle visual testing workflows
It also connects to Jira and standard test management tools, so results and issues stay tied to whatever system the team already uses.
Early teams using Test Companion report 4x faster test authoring, debugging, and maintenance. More than 1,000 teams were using it before the public launch.
Why this category is getting attention
The gap Test Companion targets is real. Coding agents are good at generating production code. They’re less good at owning the feedback loop — running the tests, interpreting failures, and fixing tests that broke because the implementation changed. That’s an ongoing maintenance burden, not a one-time generation task.
Purpose-built test agents that integrate directly into the IDE (rather than running in CI pipelines disconnected from the development context) are an emerging category. BrowserStack’s advantage here is infrastructure: 30,000+ real devices and browsers in the cloud, plus 15 years of test tooling built around cross-browser and cross-platform coverage.
Test Companion is available now from the VS Code Marketplace, JetBrains Marketplace, and the Cursor and Antigravity extension stores. More at browserstack.com.