OPC UA MCP Server vs Elasticsearch MCP Server

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

	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	Elasticsearch MCP Server Official Elastic server: list indices, read mappings, and search with Query DSL. Verified stdio (local) API key TypeScript
Category	Monitoring & Observability	Monitoring & Observability
Language	Python	TypeScript
Transport	stdio (local)	stdio (local)
Auth	None	API key
GitHub stars	27	700
Last commit	8 months ago	4 months ago
Verified
Actively maintained
Install	`git clone https://github.com/kukapay/opcua-mcp.git && cd opcua-mcp && pip install mcp[cli] opcua cryptography`	`docker run -i --rm -e ES_URL -e ES_API_KEY docker.elastic.co/mcp/elasticsearch stdio`
Repo	Open	Open

Verdict

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

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

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"
      }
    }
  }
}

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.

FAQ

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

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

Can I use both OPC UA MCP Server and Elasticsearch 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 OPC UA MCP Server and Elasticsearch MCP Server work with Claude, Cursor and Windsurf?

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

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