Nexus Catalyst MCP server

Nexus Catalyst is the official remote MCP server from nexus-catalyst.com. It answers at https://mcp.nexus-catalyst.com over streamable HTTP and asks you to sign in with your nexus-catalyst.com account before it lists its tools, so your client opens a login the first time it connects. Our probes reached it 4 of 4 times since 14 September 2026; the last check, on 18 October 2026, got the sign-in challenge, so it is up.

Cross-tool persistent memory and context for AI assistants over MCP.

Description as the publisher wrote it.

What Nexus Catalyst needs before it works

A sign-in. The server refused to list its tools to an anonymous client and answered with an authentication challenge, which is how an MCP server protected by OAuth behaves. Add it with one of the setups below; the first connection opens a login for your nexus-catalyst.com account, and the tools appear once you have approved it.

Add Nexus Catalyst to your AI client

Every block below points at https://mcp.nexus-catalyst.com. Pick your client and copy.

claude mcp add --transport http nexus-catalyst https://mcp.nexus-catalyst.com

{
  "mcpServers": {
    "nexus-catalyst": {
      "command": "npx",
      "args": ["-y", "mcp-remote", "https://mcp.nexus-catalyst.com"]
    }
  }
}

{
  "mcpServers": {
    "nexus-catalyst": {
      "url": "https://mcp.nexus-catalyst.com"
    }
  }
}

{
  "servers": {
    "nexus-catalyst": {
      "type": "http",
      "url": "https://mcp.nexus-catalyst.com"
    }
  }
}

{
  "context_servers": {
    "nexus-catalyst": {
      "url": "https://mcp.nexus-catalyst.com"
    }
  }
}

{
  "mcpServers": {
    "nexus-catalyst": {
      "serverUrl": "https://mcp.nexus-catalyst.com"
    }
  }
}

{
  "mcpServers": {
    "nexus-catalyst": {
      "url": "https://mcp.nexus-catalyst.com"
    }
  }
}

name: Nexus Catalyst
version: 0.0.1
schema: v1
mcpServers:
  - name: Nexus Catalyst
    type: streamable-http
    url: https://mcp.nexus-catalyst.com

{
  "mcpServers": {
    "nexus-catalyst": {
      "httpUrl": "https://mcp.nexus-catalyst.com"
    }
  }
}

{
  "mcpServers": {
    "nexus-catalyst": {
      "type": "http",
      "url": "https://mcp.nexus-catalyst.com"
    }
  }
}

{
  "mcpServers": {
    "nexus-catalyst": {
      "url": "https://mcp.nexus-catalyst.com"
    }
  }
}

goose://extension?url=https%3A%2F%2Fmcp.nexus-catalyst.com&type=streamable_http&id=nexus-catalyst&name=Nexus%20Catalyst

Is Nexus Catalyst up right now?

It answered our last check on 18 October 2026 in 409 ms. Over 4 checks since 14 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.

MCP servers similar to Nexus Catalyst

Questions about Nexus Catalyst

Is there an official Nexus Catalyst MCP server?

Yes. It is published by nexus-catalyst.com and served from mcp.nexus-catalyst.com, the vendor's own domain: https://mcp.nexus-catalyst.com.

How do I sign in to Nexus Catalyst?

Add the server with a setup above. The first time your client connects it opens the sign-in page for nexus-catalyst.com; approve it and the tools load.

Is Nexus Catalyst down?

It answered our last check on 18 October 2026 in 409 ms. Over 4 checks since 14 September 2026 it answered 4.

How do I add Nexus Catalyst to Cursor?

Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://mcp.nexus-catalyst.com. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.

Does Nexus Catalyst need an API key?

It needs a sign-in rather than a key you paste: the server answered with an authentication challenge, so your client runs the login when it first connects.

Where this comes from

Publisher: com.nexus-catalyst. Endpoint host: mcp.nexus-catalyst.com. ARD identifier: urn:air:com.nexus-catalyst:mcp:nexus-catalyst. First indexed 14 September 2026. The tools are exactly what the server returned; nothing on this page is inferred from its name. Ranking in Neuronto search is never for sale.