Schema: robos:MCPTool

Formal W3C SHACL constraint shape and OSLC JSON-LD specification for robos:MCPTool in the core-platform package store.

Table of contents

1. Specification Metadata
2. Upstream Schema Basis (Refers From) & Global Standards Provenance
3. Entity Relationship & Schema Context
4. Property Constraints & SHACL Rules
5. Canonical OSLC JSON-LD Example
6. Programmatic SHACL Validation

---

Specification Metadata

• RDF / OWL Class: robos:MCPTool
• Aliases / Target Classes: robos:MCPTool
• SHACL Shape ID: urn:robos:shape:MCPToolShape
• Governing Package: Core Platform (robos.core) (core-platform)
• Namespace: robos.platform
• Schema.org Classification: https://schema.org/Action
• Domain De Facto Standard: https://modelcontextprotocol.io/specification
• Upstream Schema Basis (Refers From): https://schema.org/Action

---

Upstream Schema Basis (Refers From) & Global Standards Provenance

This RobOS schema is modeled after and directly aligns with two levels of global standards:

• Universal Schema.org Class: https://schema.org/Action (100% interoperability with search engines, web indexers, and general AI reasoning)
• Specialized Domain Standard: https://modelcontextprotocol.io/specification (de facto standard for domain-specific ALM, BDD, or infrastructure operations)
• Canonical Reference: https://schema.org/Action
• Agent Guidelines: When autonomous agents generate, expand, or validate instances of robos:MCPTool, they MUST adhere to and base their output on this referred schema object and universal Schema.org parent class, extending it with RobOS SDLC properties.

---

Entity Relationship & Schema Context

MCP Tool robos:MCPTool

Governed by W3C SHACL shape urn:robos:shape:MCPToolShape within the Core Platform (robos.core) (robos.platform) package store.

dcterms:title robos:toolName robos:mcpServer

---

Property Constraints & SHACL Rules

Property Path	Name	Multiplicity	Data Type	Constraint Rule / Validation Message
dcterms:title	Title / Display Name	1..*	xsd:string	MCP Tool must have a title.
robos:toolName	MCP Tool Name	1..*	xsd:string	MCP Tool must declare tool name.
robos:mcpServer	Parent MCP Server	1..*	URI (robos:MCPServer)	MCP Tool must link to parent MCP server.

---

Canonical OSLC JSON-LD Example

{
  "@id": "urn:robos:core-platform:mcp-tool-sample",
  "@type": [
    "robos:MCPTool",
    "schema:Action",
    "oslc:Resource"
  ],
  "dcterms:title": "Sample MCP Tool",
  "dcterms:description": "Canonical reference instance for robos:MCPTool.",
  "robos:package": "core-platform",
  "robos:namespace": "robos.platform",
  "robos:toolName": "sample_tool",
  "robos:mcpServer": "urn:robos:mcp:context-engine",
  "robos:schemaOrgType": "https://schema.org/Action",
  "robos:domainStandard": "https://modelcontextprotocol.io/specification",
  "robos:refersFrom": "https://schema.org/Action"
}

---

Programmatic SHACL Validation

const { SHACLValidator } = require('/usr/local/share/robos/robos-graph/lib/shacl-validator');
const { OSLCGraphParser, OSLC_CONTEXT } = require('/usr/local/share/robos/robos-graph/lib/oslc-parser');

const validator = new SHACLValidator();
const result = validator.validateGraph(new OSLCGraphParser({
  "@context": OSLC_CONTEXT,
  "robos:nodes": [
    {
        "@id": "urn:robos:core-platform:mcp-tool-sample",
        "@type": [
            "robos:MCPTool",
            "schema:Action",
            "oslc:Resource"
        ],
        "dcterms:title": "Sample MCP Tool",
        "dcterms:description": "Canonical reference instance for robos:MCPTool.",
        "robos:package": "core-platform",
        "robos:namespace": "robos.platform",
        "robos:toolName": "sample_tool",
        "robos:mcpServer": "urn:robos:mcp:context-engine",
        "robos:schemaOrgType": "https://schema.org/Action",
        "robos:domainStandard": "https://modelcontextprotocol.io/specification",
        "robos:refersFrom": "https://schema.org/Action"
    }
  ],
}));

console.log("Conforms:", result.conforms); // Expected: true