Hronaut

Agent-enablingPaid

Visible, persistent local browser workspaces for coding agents over MCP

Hronaut preview

Overview

About Hronaut

This summary uses submitted and public product material. Only source-mapped claims are documentation reviewed.

Hronaut is a visible, persistent Electron browser that exposes durable local agent workspaces through MCP. Each workspace keeps its own browser profile and site data, while people can watch, pause, approve, or take over a task when a manual step is required.

So agents can…

  • Navigate and interact with websites through a visible local browser workspace
  • Reuse named browser context and tabs across compatible agent sessions
  • Pause for human sign-in, 2FA, CAPTCHA, payment, or other consequential steps
  • Continue only after a caller verifies the authoritative external result

Example starting workflow

Start Hronaut, copy the configuration for a compatible local MCP client from Home, then ask the agent to create an isolated workspace named first-check, open https://example.com, take a semantic snapshot and report the page heading. Keep the task within that workspace. This is a suggested first check from the setup documentation, not an independently benchmarked integration.

For authenticated work, a person signs in inside the Hronaut workspace and handles any 2FA or consequential step. The caller checks the live context and result before continuing. See the setup guide and starter workflows.

Trial and subscription

One 10-day trial starts with the first agent tool call; no card or automatic billing is required for the trial. Ongoing use is $4/month or $24/year per named user, with up to three active devices per seat. Source inspection is permitted under the Hronaut Subscription and Trial License.

Listing decision

Why Hronaut is listed

The agent-facing value is substantive: an agent can operate a named browser workspace through MCP and resume after a session boundary while a person retains visible control of consequential steps.

Before you choose

Fit and limitations

Best for

Coding agents that need a named visible local browser workspace, persistent tabs between sessions, human takeover during sign-in, 2FA, or consequential writes, and authoritative read-back after browser actions.

Not best for

Teams seeking a hosted browser fleet, stealth or CAPTCHA-solving service, unattended cloud execution or a general-purpose agent memory layer.

Known limitations

Hronaut runs web pages in its own local Electron/Chromium application; it is not a hosted browser service, native desktop controller or orchestration platform. It does not automatically inherit another browser’s authenticated profile or enterprise device-trust extensions. Compatibility depends on the calling MCP client and site. The source-available product requires a subscription after its limited trial, and current desktop artifacts are unsigned/not Apple-notarized.

Not yet verified

Compatibility with a specific coding-agent client depends on that client’s local Streamable HTTP MCP support and the active Hronaut profile configuration.

Sources

Sources and verification

First-party unless marked otherwise. Each link supports only its adjacent claim.

  1. Hronaut official website

    Hronaut describes a local visible browser workspace for coding agents, with a 10-day trial followed by paid named-user plans and no automatic conversion from the trial.

    official product page · accessed Sep 17, 2026
  2. Hronaut public repository — browser and MCP boundaries

    The public repository documents a visible persistent Electron browser, durable agent workspaces over MCP, named local browser context, human takeover, and authoritative postcondition read-back.

    official repository · accessed Sep 17, 2026
  3. Hronaut v2.4.21 release

    This release documents workspace metadata repairs, retryable Memory Saver and page recovery, and partitioned-cookie isolation during workspace data copies. The desktop artifacts are not platform code-signed or Apple-notarized.

    official release notes · accessed Sep 17, 2026
  4. Hronaut subscription and trial license

    The source-available license permits one 10-day trial starting with the first agent tool call, then requires $4/month or $24/year per named user for up to three active devices. The trial requires no payment card and does not automatically convert to paid use.

    official license · accessed Sep 17, 2026
  5. Hronaut setup guide

    The guide explains starting the desktop app, copying the current client configuration from Home, connecting over loopback Streamable HTTP MCP, and verifying a first task in an isolated workspace.

    official documentation · accessed Sep 17, 2026

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