opcua_read

MCP tool from Opcua MCP by mwieczorkiewicz

Read one or more node values. Subscribed nodes are served from the live cache; others go live unless maxagems allows a cached value.

How to use it

Project documentation lists opcua_read for the Opcua MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), then check which tools your installed version makes available. Tool availability can depend on configuration and credentials. A server handshake does not verify this tool’s behavior. See the full listing for setup details.

Install Opcua MCP

$docker run -p 8080:8080 -e SERVER_TRANSPORT=http -e OPCUA_ENDPOINT=opc.tcp://your-server:4840 opcua-mcp

FULL OPCUA MCP LISTING

Other tools in Opcua MCP (13)

opcua_browse

List a node's immediate children.

opcua_browse_nodes

Recursively browse from a node up to a depth limit, nesting children under their parent.

opcua_discovery_stats

Stats on the background discovery cache (node count, depth distribution, enabled flags).

opcua_find_similar_nodes

Fuzzy-match browse names against the discovery index.

opcua_force_discovery

Trigger an immediate discovery refresh instead of waiting for the next cycle.

opcua_get_value

Read a single node's value - a convenience wrapper over opcuaread.

opcua_get_value_by_name

Read a value by browse name instead of node ID, via the discovery index.

opcua_list_subscriptions

List active subscriptions.

opcua_node_info

Get a node's metadata (data type, access level, etc.).

opcua_server_info

Get OPC-UA server metadata.

opcua_subscribe

Start push-based updates for one or more nodes at a given interval.

opcua_unsubscribe

Cancel a subscription, by ID or by naming one of its nodes.

opcua_write

Write a value to a node. Validates the value's type against the node before writing.