MCP server

OPC UA Modeler

io.github.node-opcua/node-opcua-modeler-mcp-server

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

OPC UA companion spec types, namespace dependencies, and engineering units for AI agents

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

12

Token cost

About 2,151 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http node-opcua-modeler-mcp-server https://api.opcua-modeler.sterfive.io/api/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.node-opcua-modeler-mcp-server]
url = "https://api.opcua-modeler.sterfive.io/api/mcp"

Gemini CLI

{"mcpServers":{"node-opcua-modeler-mcp-server":{"httpUrl":"https://api.opcua-modeler.sterfive.io/api/mcp"}}}

Cursor

{"mcpServers":{"node-opcua-modeler-mcp-server":{"url":"https://api.opcua-modeler.sterfive.io/api/mcp"}}}

VS Code

{"servers":{"node-opcua-modeler-mcp-server":{"type":"http","url":"https://api.opcua-modeler.sterfive.io/api/mcp"}}}

Antigravity

agy mcp add node-opcua-modeler-mcp-server https://api.opcua-modeler.sterfive.io/api/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"node-opcua-modeler-mcp-server","server_url":"https://api.opcua-modeler.sterfive.io/api/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"node-opcua-modeler-mcp-server","server_url":"https://api.opcua-modeler.sterfive.io/api/mcp"}

Tools

• find_engineering_unit ~144 tokens
  Find the official UNECE Rec. 20 engineering unit symbol for a given description. ALWAYS call this before using any engineering unit — NEVER guess unit symbols.
• find_reusable_block ~227 tokens
  Find reusable Interfaces / AddIns by capability — pass a member name or keyword (e.g. "SerialNumber", "DeviceHealth", "Location") and get the standard blocks that already expose it. PREFER applying/composing an existing block over redefining its members inline. Interfaces are applied with `interface
• get_dsl_reference ~110 tokens
  Get the grammar reference for the OPC UA modeler YAML DSL: file header, top-level sections, name-prefix conventions, minimal examples, and common mistakes. Call this FIRST before writing any YAML model by hand. Works without an API key.
• get_type_details ~212 tokens
  Get detailed information about a specific type: its components, properties, methods, interfaces, and optional members. Use this to understand a type's structure before creating instances or subtypes. `specRef`, on the type and on a member, is the link to the section of the specification that defines
• list_namespaces ~87 tokens
  List all well-known OPC UA companion spec namespace aliases with their full names, URIs, and dependencies. Use this to discover what namespaces are available.
• list_types ~137 tokens
  List ALL ObjectTypes, VariableTypes, and InterfaceTypes defined in a specific companion spec namespace. ALWAYS call this before using any type from a namespace — NEVER guess type names.
• opcua_model_create ~199 tokens
  Generate an OPC UA YAML model from a natural language description using AI. Requires an API key (set OPCUA_MODELER_API_KEY env var). The AI will auto-detect relevant companion specs, generate a validated model with documentation, and auto-correct validation errors.
• opcua_model_generate ~387 tokens
  Generate OPC UA NodeSet2.xml and the symbols CSV from a YAML model. Requires an API key (set OPCUA_MODELER_API_KEY env var). NodeIds stay stable only if each regeneration passes back the symbols of the previous one: pass symbols_csv, or mode "new" for a first generation, or mode "renumber" to change
• opcua_model_reverse ~215 tokens
  Reverse-engineer a NodeSet2.xml file back into the YAML DSL format. Requires an API key (set OPCUA_MODELER_API_KEY env var). Optionally specify the target namespace URI to extract.
• opcua_model_validate ~144 tokens
  Validate an OPC UA YAML model for correctness. Returns diagnostics with severity (error/warning/info), codes, messages, and line numbers. Works without an API key (limited to 50 calls/day). ALWAYS validate before generating.
• resolve_dependencies ~155 tokens
  Given one or more companion spec namespace aliases, returns the full resolved dependency list that MUST go in the YAML `namespaces:` section. Always call this before generating the namespaces block.
• search_types ~134 tokens
  Search for types across ALL companion specs by keyword. Use this when you don't know which namespace defines a type. Returns matching types with their namespace alias.

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