OPC UA Modeler

Connect Remote server

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"
    }
  }
}

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

Settings > Connectors > Add custom connector
URL: https://api.opcua-modeler.sterfive.io/api/mcp

Tools 12 found in our last check

• 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 speci…

• 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 ap…

• 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…

• 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.

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