Hronaut for Claude Code

Give your coding agent its own browser. Keep yours.

The Claude Code plugin for Hronaut, a visible desktop browser for coding agents, with a separate workspace for each project. It adds Hronaut's MCP server and the Hronaut skill. Start Hronaut, then in Claude Code:

/plugin marketplace add hronaut/hronaut-claude-plugin
/plugin install hronaut@hronaut

What the plugin does, how it connects and its options: plugins/hronaut/README.md. The Codex plugin is in hronaut/hronaut-codex-plugin. Hronaut itself lives in hronaut/hronaut; report problems there.

Repository layout

• .claude-plugin/marketplace.json: the marketplace /plugin marketplace add reads, with one plugin.
• plugins/hronaut/: the plugin, exactly as Claude Code installs it from this marketplace.
• plugins/hronaut-skill/: the same plugin without the MCP server, which is what Anthropic's plugin directory lists.
• .agents/plugins/marketplace.json: what Codex reads when someone adds this repository as a Codex marketplace. It lists the Codex plugin from hronaut/hronaut-codex-plugin.
• packages/mcp/: @hronaut/mcp, the stdio bridge to Hronaut's local MCP server that the plugin starts with npx, published to npm by the Publish @hronaut/mcp workflow.
• tests/: checks of the manifests and the bridge on Linux, macOS and Windows.
• .github/workflows/sync.yml: once a day copies the Hronaut skill from the newest Hronaut release, and releases a new patch version when it changed.

Development

npm ci
npm test
npx --yes @anthropic-ai/claude-code plugin validate --strict plugins/hronaut
npx --yes @anthropic-ai/claude-code plugin validate --strict plugins/hronaut-skill
npx --yes @anthropic-ai/claude-code plugin validate --strict .

Every change users should get bumps version in plugins/hronaut/.claude-plugin/plugin.json and adds a CHANGELOG entry with that version. See AGENTS.md for the rules Anthropic's plugin directory adds.

License

The plugin, including its copy of the Hronaut skill, is open source under the MIT License. Hronaut itself, the app it connects to, is a separate product under the Hronaut Subscription and Trial License: a 10-day trial, then a subscription. What you can do without paying.