OPC UA Modeler
OPC UA companion spec types, namespace dependencies, and engineering units for AI agents
Connect it
Settings → Connectors → Add custom connector
URL: https://api.opcua-modeler.sterfive.io/api/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://api.opcua-modeler.sterfive.io/api/mcp{
"mcpServers": {
"node-opcua-modeler-mcp-server": {
"url": "https://api.opcua-modeler.sterfive.io/api/mcp"
}
}
}claude mcp add --transport http node-opcua-modeler-mcp-server 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"
}
}
}{
"mcpServers": {
"node-opcua-modeler-mcp-server": {
"command": "npx",
"args": [
"-y",
"node-opcua-modeler-mcp-server@1.6.1"
]
}
}
}claude mcp add node-opcua-modeler-mcp-server -- npx -y node-opcua-modeler-mcp-server@1.6.112 tools, verified live
resolve_dependenciesread-onlyGiven 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_namespacesread-onlyList 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_typesread-onlyList 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_detailsread-onlyGet 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.
search_typesread-onlySearch 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_blockread-onlyFind 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
find_engineering_unitread-onlyFind 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_referenceread-onlyGet 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_validateread-onlyValidate 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_generateread-onlyGenerate OPC UA NodeSet2.xml and Symbols.CSV from a YAML model. Requires an API key (set OPCUA_MODELER_API_KEY env var). Returns base64-encoded artifacts if the model is valid, or diagnostics if validation fails. Optionally set include_docs=true to also generate markdown documentation.
opcua_model_reverseread-onlyReverse-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_createread-onlyGenerate 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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