Connecting Apollo MCP server to Claude Code in Ubuntu

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Hi,

I am currently following the “Getting Started with MCP Server and GQL” course on an Ubuntu machine. Since Claude Desktop is unavailable for Linux, I have been attempting to configure everything in Claude Code instead.
Below is my .claude.json file.

{
  "installMethod": "unknown",
  "autoUpdates": true,
  "firstStartTime": "2025-08-01T16:36:28.985Z",
  "userID": "",
  "projects": {
    "/home/usuario/Documents/odyssey-apollo-mcp": {
      "allowedTools": [],
      "history": [],
      "mcpContextUris": [],
      "mcpServers": {
        "airlock": {
          "command": "npx",
          "args": [
            "mcp-remote",
            "http://127.0.0.1:5000/mcp",
            "--transport",
            "http-first"
          ]
        }
      },
      "hasTrustDialogAccepted": true,
      "projectOnboardingSeenCount": 0,
      "hasClaudeMdExternalIncludesApproved": false,
      "hasClaudeMdExternalIncludesWarningShown": false
    }
  }
}

Unfortunately, although the MCP server shows up when I run claude mcp list (it’s listed as a Claude MCP), it doesn’t appear in the “Search and tools” options within Claude chat.

Checking MCP server health...

airlock: npx mcp-remote http://127.0.0.1:5000/mcp --transport http-first - ✓ Connected

Any help would be greatly appreciated.