Desktop browser for AI coding agents

A browser your
AI agent can
come back to.

A real browser on your computer. Test your web app, keep project sign-ins between tasks, and take over when needed.

No card. No automatic billing.
Then $4/month or $24/year per named user.

Windows · macOS · Linux · Bring your own agent

Your workspace, between prompts
Hronaut 2.5.28: an isolated Localhost QA workspace, an agent-inspected example checkout, and a human-review handoff.
Hronaut 2.5.28 · Dark appearance · Localhost QA · Example dataView full preview

For developers and agencies checking web apps

Less setup between tasks.

Pick up where you left off.

Return to the same tabs and sign-ins after an agent disconnects. Website sessions can still expire.

See a recorded reconnect

Keep projects separate.

Give each project a named workspace with its own cookies and site storage. Check localhost or signed-in apps.

Explore workspaces

Stay in control.

Watch the browser, pause agent access, and handle a login yourself. Keep Hronaut running for automation.

See the login handoff
Watch the 35-second product tour

Real Hronaut 2.8.5 · Local example data · MCP demo clients. Licensed music; sound is optional.

Transcript and capture details

A demo client opens a local checkout in an isolated workspace, adds one seat and checks the updated total. It opens the order for review and requests human attention. The operator types a review note and confirms the local review. The first client disconnects; a new client explicitly resumes the same tab using its private resume key. No payment is sent.

Music: “Hazy After Hours” by Alejandro Magaña (A. M.), used under the Mixkit Stock Music Free License for commercial web video.

Recorded at normal speed from the released 2.8.5 source build. Human controls are operated by the capture harness. This is not a named AI-client integration, installer, login or app-restart test. Download the 35-second tour.

Or Watch the recorded reconnect check: a client disconnects, the page stays, and a new client explicitly resumes the workspace.

Recorded with Hronaut 2.4.24, MCP test clients, and a local example page. See the exact scope.

Start with one browser check

Your app. Your agent.
A browser that stays.

Connect your agent
  1. 1
    Open Hronaut.

    Install on the computer running your coding agent.

  2. 2
    Connect your agent.

    Use its setup guide or copy the current snippet from Hronaut Home.

  3. 3
    Check your app.

    Open localhost, try a flow, and review the result.

Try a localhost check →

Pricing and trial

Try it on your next project.

All features. One named user. Up to three devices.

10-day trial

$0for 10 days

10 consecutive days from your first agent tool call. No credit card required.

  • All browser features included
  • No automatic billing after the trial
Start 10-day trial

Subscription seat

$24per seat / year

Equivalent to $2/month, billed annually — 50% off $48.

  • Personal and commercial use by one named user
  • Up to 3 active devices
  • All features and updates while subscribed
  • Your AI agent or model is provided separately

1 seat · $24 / year before applicable tax

Secure Creem checkout is loading.

Source-available under the Hronaut Subscription and Trial License. All ongoing use requires a subscription after the trial. Cancellation and refunds · Manage subscription

Cancellation and trial expiry

An immediate cancellation ends access immediately; end-of-period cancellation keeps access through the paid date. Cancellation does not request a refund. After expiry, agent automation stops; browser data remains accessible manually for recovery, export, and deletion. Read the refund policy.

Before you install

A few useful answers.

Does Hronaut include an AI agent?

Bring your own coding agent, such as Codex, Claude Code, or Cursor. Your agent or model costs are separate. Choose your agent.

Can I use it for localhost and signed-in apps?

Yes. Open your local app or sign in inside a project workspace. Website sessions can expire; Hronaut does not bypass login or 2FA. Keep Hronaut and the agent connection running for automation.

What happens after the trial?

The 10-day trial starts with your first agent tool call. No card or automatic billing. All ongoing use requires a subscription. After expiry, automation stops and browser data remains accessible manually for recovery, export, and deletion.

Where does my browser data go?

Profiles stay on your computer. Websites receive normal browser traffic, and your agent can receive page contents. If that agent uses a cloud model, its data handling applies. Read the security boundary.

Why might installation show a warning?

Initial packages are not platform code-signed or Apple-notarized. Verify published hashes and GitHub attestations before installing. Verification steps · Get help.

Need the details?

Optional: add the Hronaut agent skill

The skill guides isolated workspaces, semantic browser actions, and private human handoff. It does not install Hronaut, configure MCP, or contain secrets.

npx skills add hronaut/hronaut --skill hronaut
Setup and boundaries · View on skills.sh · View skill source
Latest releaseWindows, macOS, and Linux packages with SHA-256 hashes and GitHub build attestations.

Checkout complete

Activate your license

  1. Find your key. Check your Creem order confirmation or receipt email. Use the same email at the Customer Portal to view your order.
  2. Open Hronaut. Go to Settings → License, paste your license key, and activate this device.

No email yet? Check your spam folder and allow a few minutes for delivery. Contact support if you still need help.