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Connect Windsurf and its Cascade agent to the Arcus docs MCP server.

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Prerequisites

  • Windsurf with MCP support (recent versions)

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Setup

1

Open Cascade's MCP panel

In Windsurf, open Cascade → Plugins / MCP servers (the entry point is in the Cascade sidebar).
2

Add the Arcus server

Add a new server with the following configuration:
{
  "mcpServers": {
    "arcus-docs": {
      "serverUrl": "https://docs.arcus.xyz/mcp"
    }
  }
}
Windsurf reads MCP servers from ~/.codeium/windsurf/mcp_config.json. Save and reload Cascade.
3

Authenticate

On the first request to the server, Windsurf opens a browser tab for OAuth sign-in. Complete the flow and return to Cascade — the connection becomes active.
4

Try it

Ask Cascade:
What does the response to GET /v1/positions?address={address} look like? Include the field types.
Cascade will call the MCP server, fetch the relevant page, and ground its answer in the live spec.

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Notes

  • If you don’t see an authentication prompt, your Windsurf build may predate remote-MCP OAuth support — update and try again.
  • For the underlying server details, see the MCP server overview.