opcua_write

MCP tool from Opcua MCP by mwieczorkiewicz

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

How to use it

opcua_write is exposed by the Opcua MCP MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the opcua_write tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.

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_read

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

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.