Give Windsurf Cascade a browser that survives the task.

Before you start

This page is for the legacy Cascade agent.

Current Devin Desktop documentation says Devin Local is the default agent for new Devin Desktop tabs. It uses Devin CLI configuration instead of the Windsurf-era Cascade file. For a new tab, follow the Devin Local browser MCP guide. Continue here only when the interface names the agent Cascade.

Step 1 · Connect

Connect Cascade.

Start Hronaut. Open Cascade's MCP settings and edit ~/.codeium/windsurf/mcp_config.json. The entry works across local projects.

{
  "mcpServers": {
    "hronaut": {
      "serverUrl": "http://127.0.0.1:47812/mcp"
    }
  }
}

{
  "mcpServers": {
    "hronaut": {
      "serverUrl": "http://127.0.0.1:47812/mcp",
      "headers": {
        "Authorization": "Bearer ${file:/path/from-hronaut-home}"
      }
    }
  }
}

Step 2 · Verify

Check that it works.

Use a clean workspace for this check, before Cascade goes near a signed-in page.

1. 1

   Cascade sees Hronaut

   Open Cascade → MCPs, refresh the server list, and confirm that hronaut is connected. A saved JSON file alone is not runtime proof.

2. 2

   Hronaut sees Cascade

   Open Hronaut Home. The client should appear under Connections.

3. 3

   Run a first browser task

   Ask Cascade: “Create a Hronaut workspace named first-check, open https://example.com inside it, and tell me the page title and workspace ID. Start with clean scratch storage.”

   Expected result: a visible first-check workspace shows Example Domain.