spec compliance of resources

Author: topherbullock

README.md

@@ -780,6 +780,9 @@ resource = MCP::Resource.new(
   title: "My Resource", # WARNING: This is a `Draft` and is not supported in the `Version 2025-06-18 (latest)` specification.
   description: "Lorem ipsum dolor sit amet",
   mime_type: "text/html",
+  annotations: { category: "documentation" },
+  size: 1024,
+  meta: { version: "1.0", last_updated: "2024-01-01" }
 )
 
 server = MCP::Server.new(
@@ -813,6 +816,8 @@ resource_template = MCP::ResourceTemplate.new(
   title: "My Resource Template", # WARNING: This is a `Draft` and is not supported in the `Version 2025-06-18 (latest)` specification.
   description: "Lorem ipsum dolor sit amet",
   mime_type: "text/html",
+  annotations: { category: "template" },
+  meta: { version: "1.0", template_type: "dynamic" }
 )
 
 server = MCP::Server.new(

lib/mcp/resource.rb

@@ -2,23 +2,29 @@
 
 module MCP
   class Resource
-    attr_reader :uri, :name, :title, :description, :mime_type
+    attr_reader :name, :title, :uri, :description, :mime_type, :annotations, :size, :meta
 
-    def initialize(uri:, name:, title: nil, description: nil, mime_type: nil)
-      @uri = uri
+    def initialize(uri:, name:, title: nil, description: nil, mime_type: nil, annotations: nil, size: nil, meta: {})
       @name = name
       @title = title
+      @uri = uri
       @description = description
       @mime_type = mime_type
+      @annotations = annotations
+      @size = size
+      @meta = meta
     end
 
     def to_h
       {
-        uri: uri,
         name: name,
         title: title,
+        uri: uri,
         description: description,
         mimeType: mime_type,
+        annotations: annotations&.to_h,
+        size: size,
+        _meta: meta,
       }.compact
     end
   end

lib/mcp/resource_template.rb

@@ -2,23 +2,27 @@
 
 module MCP
   class ResourceTemplate
-    attr_reader :uri_template, :name, :title, :description, :mime_type
+    attr_reader :name, :title, :uri_template, :description, :mime_type, :annotations, :meta
 
-    def initialize(uri_template:, name:, title: nil, description: nil, mime_type: nil)
-      @uri_template = uri_template
+    def initialize(uri_template:, name:, title: nil, description: nil, mime_type: nil, annotations: nil, meta: nil)
       @name = name
       @title = title
+      @uri_template = uri_template
       @description = description
       @mime_type = mime_type
+      @annotations = annotations
+      @meta = meta || {}
     end
 
     def to_h
       {
-        uriTemplate: uri_template,
         name: name,
         title: title,
+        uriTemplate: uri_template,
         description: description,
         mimeType: mime_type,
+        annotations: annotations&.to_h,
+        _meta: meta.empty? ? nil : meta,
       }.compact
     end
   end