Chrome DevTools MCP alternative

A test-focused Chrome DevTools MCP alternative for AI agents

Kane CLI is the test-focused Chrome DevTools MCP alternative. Give it a plain-English objective and it drives a real browser, self-heals when the UI changes, and returns a verified pass or fail. Free to install.

npm install -g @testmuai/kane-cli

or read the documentation

Why teams move from Chrome DevTools MCP to Kane CLI

Chrome DevTools MCP gives an agent tools, backed by the Chrome DevTools Protocol, to inspect the DOM, read traces, and drive Chrome. Great for debugging, but the agent sequences every call and reads raw output to verify it.

Kane CLI moves that work into the tool. You give it intent, not protocol commands. It drives real Chrome, adapts when the UI changes, asserts the result, and returns a verified pass or fail with video and a shareable replay link.

These tools do different jobs. Use Chrome DevTools MCP for in-browser debugging and ad-hoc automation. Use Kane CLI for verified browser tasks and tests, with cross-browser cloud runs and one-command export to native Playwright.

Kane CLI automating a browser flow from natural language

Kane CLI vs Chrome DevTools MCP

The same Chrome browser, a very different contract with your agent.

Capability	Kane CLI (TestMu AI)	Chrome DevTools MCP
How the agent drives the browser	Plain-English objectives	High-level browser tools the agent calls (navigate, click, fill)
Planning and sequencing	Tool plans and sequences the steps for you	Agent plans and sequences every tool call
Resilience when the UI changes	Self-heals and replays validated flows from cache	Agent re-plans each run, no cached healing
Verified pass or fail	Built-in assertions, returns pass or fail
Replayable, cached tests	test.md replays with no repeat LLM cost
CI exit codes	0 pass, 1 fail, 2 setup, 3 timeout
Cross-browser and OS on the cloud	Run across browsers and OS on the TestMu AI grid	Chrome only via the DevTools Protocol
Best fit	Verified browser tasks and tests	In-browser debugging and ad-hoc automation
Evidence and reporting	Video, step trace, shareable links, dashboard	Console and protocol output
Native Playwright export	One command to export Playwright code

What you get with Kane CLI

Everything Chrome DevTools MCP leaves to your agent, handled by the tool.

Plain English, not tool calls

Describe the journey once. Kane CLI plans the steps, drives Chrome, and verifies the outcome. No tool calls to sequence and no glue code to maintain.

Resilient by default

When the frontend changes, Kane CLI adapts and keeps going, pushing through up to 50 steps until the full journey is verified instead of stalling on a stale node.

Verified pass or fail

Built-in assertions check each step, not just the final screen, and flag the exact point of failure so your agent knows what to do next.

Replay and caching

A validated run is saved as a test.md you can replay deterministically, with no repeat LLM cost, turning a verified task into a repeatable test.

CI exit codes and cloud scale

Gate pipelines on clean exit codes and scale from local Chrome to cross-browser, cross-OS runs on the TestMu AI grid with one flag.

Shareable evidence

Every run produces a video, step trace, and replay link in a dashboard, so a result is something you can hand to your team, not raw logs to read.

Build up confidence locally

Start in your terminal

Validate on the cloud

Release with confidence

Debugging and verified tasks, the right tool for each

Kane CLI and KaneAI share the same automation engine and dashboard.

Debug with one tool, verify with another

Keep Chrome DevTools MCP for in-browser debugging and ad-hoc automation. Use Kane CLI when you need a verified browser task or test with a clean pass or fail.

Built for the agent loop

Generate code, then verify it in a real browser before opening a PR. Kane CLI closes the gap between what an agent writes and what actually works.

Evidence you can share

Every run produces a persistent video, step trace, and replay link you can drop into a PR or bug report, instead of protocol output to parse.

Replace Chrome DevTools MCP for tasks in three steps

Install

Run npm install -g @testmuai/kane-cli, then sign in with your TestMu AI account. No DevTools Protocol session or per-client MCP server to wire up.

Point your agent

Tell Claude Code, Cursor, Codex, or Gemini to use Kane CLI for browser work. It reads the agent guide and takes over.

Run and verify

Describe the flow in plain English. Kane CLI drives a real browser, verifies each step, and returns a pass or fail with evidence.

Get Started With Kane CLI

🎉 Launch offer: Bonus credits for the first 3 months on paid plans

Choose the right plan for you

Local test authoring via CLI

Auto-heal & vision

View test cases on UI

Test Manager

Free

/month

200 Credits

Resets in every

30 days

Free tier

Starter

$19

/month

2000 Credits

Launch: 4,000 Credits (+100%)

Bonus for first 3 months

Free tier

Get the technical rundown

Blog

A look at Kane CLI. What we built, what it does, and where it is headed.

Read the blog

Documentation

Everything you need to install, configure, and run Kane CLI in under 2 minutes.

View documentation

GitHub

Browse the source, file issues, and follow the roadmap on GitHub.

Open GitHub

Frequently asked questions

Kane CLI by TestMu AI is the leading Chrome DevTools MCP alternative for AI agents and developers who want verified browser tasks rather than raw debugging access. Chrome DevTools MCP gives an agent high-level tools to inspect and drive Chrome, but the agent must plan and sequence every action, with no built-in assertions, self-healing, or reporting. Kane CLI takes a plain-English objective, drives a real Chrome browser, self-heals when the UI changes, verifies every step, and returns a clean pass or fail. It runs from any terminal, in CI, or from an AI coding agent like Claude Code, Cursor, or Codex.

Chrome DevTools MCP is a Model Context Protocol server, maintained by the Chrome DevTools team, that gives an AI client high-level tools to inspect the DOM, read network and performance traces, evaluate scripts, and drive Chrome, backed by the Chrome DevTools Protocol. It is powerful for debugging and automation, but the agent plans and sequences every tool call itself, and resilience, assertions, replay, and reporting are left to you.

Chrome DevTools MCP is built for debugging and automation: it gives the agent browser tools and the agent sequences the rest. Kane CLI is built for verified tasks and tests. You describe intent in plain English instead of sequencing tool calls, runs adapt up to 50 steps when the UI changes, and every run returns a verified pass or fail with built-in assertions, video evidence, and a shareable replay link. The short version: use Chrome DevTools MCP for debugging and ad-hoc automation, Kane CLI for verified browser tasks and tests.

Yes. Every run supports an --agent flag that switches output to structured NDJSON, so any AI coding agent can parse results, read a screenshot on failure, and decide what to do next. Point your agent at the published agent guide and it will install, authenticate, and drive Kane CLI on its own, with no per-client MCP server to configure.

Yes. Any validated flow exports to native Playwright with one command. Chrome DevTools MCP drives Chrome through its own tools with no code export, while Kane CLI gives you natural language during authoring and full ownership of a generated Playwright script when you want to take it further.

Yes. Authenticate with your TestMu AI credentials, pass --headless and --timeout on each run, and gate your pipeline on the exit code: 0 on pass, 1 on fail, 2 on setup or auth errors, 3 on timeout. Chrome DevTools MCP is driven interactively by an MCP client and does not provide CI exit codes on its own.

Teach your agent the right skills

Point your AI coding agent at the Kane CLI guide and it will install, authenticate, and run verified browser flows on its own.

Point your agent to: testmuai.com/kane-cli/agents.md