Schema: robos:MCPServer

Formal W3C SHACL constraint shape and OSLC JSON-LD specification for robos:MCPServer 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

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Specification Metadata

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

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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/SoftwareApplication (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/SoftwareApplication
• Agent Guidelines: When autonomous agents generate, expand, or validate instances of robos:MCPServer, 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 Server robos:MCPServer

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

dcterms:title robos:transport robos:toolsProvided

---

Property Constraints & SHACL Rules

Property Path	Name	Multiplicity	Data Type	Constraint Rule / Validation Message
dcterms:title	Title / Display Name	1..*	xsd:string	MCP Server must have a title or display name.
robos:transport	transport	1..*	xsd:string	MCP Server must declare transport protocol (stdio, sse).
robos:toolsProvided	toolsProvided	1..*	xsd:string	MCP Server must list at least one provided tool.

---

Canonical OSLC JSON-LD Example

{
  "@id": "urn:robos:mcp:context-engine",
  "@type": [
    "oslc_am:Resource",
    "robos:MCPServer",
    "robos:ToolProvider",
    "schema:SoftwareApplication"
  ],
  "dcterms:title": "RobOS Code Context MCP Server",
  "dcterms:description": "Stdio MCP server exposing AST symbols, codebase indexing, and symbol resolution.",
  "robos:transport": "stdio",
  "robos:command": "/usr/local/bin/robos-context-mcp",
  "robos:toolsProvided": [
    "ast_search",
    "symbol_lookup",
    "dependency_graph"
  ],
  "robos:package": "core-platform",
  "robos:namespace": "robos.platform",
  "robos:schemaOrgType": "https://schema.org/SoftwareApplication",
  "robos:domainStandard": "https://modelcontextprotocol.io/specification"
}

---

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:mcp:context-engine",
        "@type": [
            "oslc_am:Resource",
            "robos:MCPServer",
            "robos:ToolProvider",
            "schema:SoftwareApplication"
        ],
        "dcterms:title": "RobOS Code Context MCP Server",
        "dcterms:description": "Stdio MCP server exposing AST symbols, codebase indexing, and symbol resolution.",
        "robos:transport": "stdio",
        "robos:command": "/usr/local/bin/robos-context-mcp",
        "robos:toolsProvided": [
            "ast_search",
            "symbol_lookup",
            "dependency_graph"
        ],
        "robos:package": "core-platform",
        "robos:namespace": "robos.platform",
        "robos:schemaOrgType": "https://schema.org/SoftwareApplication",
        "robos:domainStandard": "https://modelcontextprotocol.io/specification"
    }
  ],
}));

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