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OPC UA Modeler

io.github.node-opcua/node-opcua-modeler-mcp-server · v1.6.1

Measured by MCP Station

Description written by the publisher, not verified

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

Connect

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

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

Tools as reported by the server

• resolve_dependencies
  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.
• list_namespaces
  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
  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.
• get_type_details
  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
• search_types
  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.
• find_reusable_block
  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
• find_engineering_unit
  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.
• get_dsl_reference
  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.
• opcua_model_validate
  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.
• opcua_model_generate
  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
  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_create
  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.

Tool changes

• 2026-10-21: resolve_dependencies, list_namespaces, list_types, get_type_details, search_types, find_reusable_block, find_engineering_unit, get_dsl_reference, opcua_model_validate, opcua_model_generate, opcua_model_reverse, opcua_model_create
• 2026-10-16: resolve_dependencies, list_namespaces, list_types, get_type_details, search_types, find_reusable_block, find_engineering_unit, get_dsl_reference, opcua_model_validate, opcua_model_generate, opcua_model_reverse, opcua_model_create

Repository · Website · JSON · Text for agents · Registry updated 2026-08-27