TestMu AI launches Kane CLI for terminal browser tests

TestMu AI has launched Kane CLI, a terminal-based browser automation tool aimed at software developers and AI coding agents.

The launch targets a gap in software development workflows: code can be generated quickly, but browser-based checks are still needed to confirm that user interfaces work as intended. Kane CLI is designed to run those checks from a terminal session instead of requiring manual review in a browser window.

Formerly known as LambdaTest, TestMu AI says the tool works with Claude Code, Codex CLI, Cursor and Gemini CLI. Kane CLI is free to start and can be installed through npm or Homebrew.

The software is positioned as a way to connect code generation and browser verification in a single workflow. Developers, QA engineers and product teams can describe a browser journey and receive a pass-or-fail result, along with a step trace and screenshots, before code is submitted for review.

Closing a gap

Browser testing has long been one of the slower stages in the release process because it often requires someone to click through pages and confirm that visual elements, forms and interactions behave correctly. That friction has become more visible as AI coding tools have sped up software creation and bug fixing.

Kane CLI is intended to move browser verification closer to development rather than leaving it until later in the QA cycle. Tests created with the tool can also be turned into regression suites, allowing teams to reuse verification work in future releases.

Among the functions listed are intent-based browser control without selectors, the ability to continue through multi-step flows, and export of plain-English test flows into Playwright code. The software also monitors for unexpected behaviour during test runs and uses on-screen cues such as loaders and animations to decide when to proceed.

It also supports interruptions such as one-time passwords and CAPTCHAs. In those cases, Kane CLI pauses so a person can complete the step before the run continues.

Users can also convert existing Playwright or Selenium scripts into Kane CLI tests and move Kane CLI tests back into Playwright. Test cases created locally are synchronised with a remote test manager, and the tool can run headlessly in continuous integration systems including GitHub Actions, GitLab CI, Jenkins and Bitbucket Pipelines.

Three modes

Kane CLI is being released with three modes. An interactive terminal user interface is intended for users working directly in a live browser session, while a headless command-line option is aimed at scripts and CI pipelines.

A third mode, described as agent mode, produces structured NDJSON output so AI coding tools can read results and decide their next action. That reflects a wider push across software tooling to make development environments more usable for autonomous or semi-autonomous agents as well as human engineers.

The launch comes as companies across the software sector look for more consistent ways to verify AI-generated code. While code generation has advanced rapidly, testing and validation still often depend on a mix of automated scripts, browser frameworks and manual checks, especially for front-end changes.

Asad Khan outlined the company's view of that problem in a statement accompanying the launch.

"For years, the bottleneck in software was writing the code. Vibe coding removed that. Teams are shipping more software, faster, than at any point in the history of our industry. But it exposed a new bottleneck most teams haven't named yet: trust. Every feature that ships from a prompt is a feature nobody has actually verified. At agentic speed, 'a human will click through it later' is not a plan - it's a liability, compounding at the speed of AI. it's a growing pile of unverified work. That's why we built Kane CLI. One terminal command, a real browser, pass or fail. Software has always trusted the people who wrote it. Now, for the first time, it has to trust the machines. Kane CLI is how trust scales in the agentic era," said Asad Khan, Chief Executive Officer and Co-Founder of TestMu AI.

The product is being introduced with a free entry tier. TestMu AI is also offering bonus credits for the first three months to teams that activate a paid plan during the introductory period, giving engineering and quality teams access to Kane CLI's cloud functions.

By releasing a terminal-based browser testing tool for both engineers and coding agents, TestMu AI is entering a growing market for software tools built around AI-assisted development. The pressure point it is targeting is simple: code can now be produced in seconds, but proving that it works in the browser remains more difficult.

Kane CLI is designed to return that proof as a pass-or-fail result in the same environment where the code is being created.