OPC UA Modeler

Install

Works with Claude Code, VS Code, Codex, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/node-opcua-node-opcua-modeler-mcp-server

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What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 25, 2026.

Tools

12 read · 0 write · 0 deleteRead-only

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Node.js package

Tools (12)

As the server listed them on Oct 25, 2026. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• find_engineering_unitFind an engineering unitread-only

  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_blockFind a reusable interface or AddInread-only

  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 `interfaces:`; addins (types with a DefaultInstanceBrowseName) are composed with `addIns:`. A single property → use the Interface; a whole named sub-object → use the AddIn.

• get_dsl_referenceGet the DSL grammar referenceread-only

  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_detailsGet type detailsread-only

  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 it: cite it.

• list_namespacesList companion specificationsread-only

  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_typesList types in a namespaceread-only

  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_createCreate a model from a descriptionread-only

  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_generateGenerate NodeSet2 XMLread-only

  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 ids on purpose. A call with none of these is refused with SYMBOLS_DECISION_REQUIRED. Returns base64-encoded artifacts if the model is valid. The result lists symbol counts (reused/new/dropped), hints and next steps.

• opcua_model_reverseReverse-engineer NodeSet2 XMLread-only

  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_validateValidate an OPC UA modelread-only

  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_dependenciesResolve namespace dependenciesread-only

  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_typesSearch types across specsread-only

  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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Last commit

Oct 23, 2026 (8 days ago)

Last release

Aug 27, 2026 (2 months ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

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

Version

1.6.1

Auth

Auth not stated

Packages

npm node-opcua-modeler-mcp-server

License

Apache-2.0

Repository

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

Website

opcua-modeler.sterfive.io

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql