{
  "namespace": "mcp",
  "description": "Model Context Protocol semantic convention attributes",
  "attributes": {
    "mcp.method.name": {
      "description": "The name of the request or notification method.",
      "type": "string",
      "examples": ["initialize", "tools/call", "resources/read"]
    },
    "mcp.protocol.version": {
      "description": "The version of the Model Context Protocol used.",
      "type": "string",
      "examples": ["2025-06-18"]
    },
    "mcp.resource.uri": {
      "description": "The value of the resource URI.",
      "type": "string",
      "examples": [
        "postgres://database/customers/schema",
        "file:///home/user/documents/report.pdf"
      ]
    },
    "mcp.session.id": {
      "description": "Identifies an MCP session.",
      "type": "string",
      "examples": ["191c4850af6c49e08843a3f6c80e5046"]
    }
  }
}