Elasticsearch MCP Server vs OPC UA MCP Server

A side-by-side comparison of two Monitoring & Observability servers — tools, transport, auth, maintenance, and copy-paste config for each.

	Elasticsearch MCP Server Official Elastic server: list indices, read mappings, and search with Query DSL. Verified stdio (local) API key TypeScript	OPC UA MCP Server Connect AI agents to OPC UA industrial systems to monitor, analyze, and control operational data in real time. Unverified stdio (local) No auth Stale Python
Category	Monitoring & Observability	Monitoring & Observability
Language	TypeScript	Python
Transport	stdio (local)	stdio (local)
Auth	API key	None
GitHub stars	700	27
Last commit	6 months ago	9 months ago
Verified
Actively maintained
Install	`docker run -i --rm -e ES_URL -e ES_API_KEY docker.elastic.co/mcp/elasticsearch stdio`	`git clone https://github.com/kukapay/opcua-mcp.git && cd opcua-mcp && pip install mcp[cli] opcua cryptography`
Repo	Open	Open

Verdict

Pick Elasticsearch MCP Server if you want the official, vendor-maintained server, and you prefer the more popular, battle-tested option.

Pick OPC UA MCP Server if you want zero-setup with no API key.

Add Elasticsearch MCP Server

Install / run

docker run -i --rm -e ES_URL -e ES_API_KEY docker.elastic.co/mcp/elasticsearch stdio

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "elasticsearch-mcp-server": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-e",
        "ES_URL",
        "-e",
        "ES_API_KEY",
        "docker.elastic.co/mcp/elasticsearch",
        "stdio"
      ],
      "env": {
        "ES_URL": "<your-elasticsearch-cluster-url>",
        "ES_API_KEY": "<your-elasticsearch-api-key>"
      }
    }
  }
}

Requires Docker to be installed and running.

Add OPC UA MCP Server

Install / run

git clone https://github.com/kukapay/opcua-mcp.git && cd opcua-mcp && pip install mcp[cli] opcua cryptography

Paste into ~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "opc-ua-mcp-server": {
      "command": "python",
      "args": [
        "path/to/opcua_mcp/main.py"
      ],
      "env": {
        "OPCUA_SERVER_URL": "your-opc-ua-server-url"
      }
    }
  }
}

FAQ

Elasticsearch MCP Server or OPC UA MCP Server — which is better?

Pick Elasticsearch MCP Server if you want the official, vendor-maintained server, and you prefer the more popular, battle-tested option. Pick OPC UA MCP Server if you want zero-setup with no API key.

Can I use both Elasticsearch MCP Server and OPC UA MCP Server?

Yes — MCP clients let you enable multiple servers at once. Add both configs to your client's mcpServers and use whichever tool fits the task.

Do Elasticsearch MCP Server and OPC UA MCP Server work with Claude, Cursor and Windsurf?

Both do. Copy the per-client config below into Claude Desktop, Cursor, or Windsurf.

View Elasticsearch MCP Server →View OPC UA MCP Server →More comparisons →