Internal Release 0.2.5

changes in this release:
- fix ping response #17
- add prompts and resources support to init response #18
- Bump json from 2.10.1 to 2.10.2 #14

Author: topherbullock

Gemfile.lock

@@ -1,7 +1,7 @@
 PATH
   remote: .
   specs:
-    model_context_protocol (0.2.4)
+    model_context_protocol (0.2.5)
       json_rpc_handler (~> 0.1)
 
 GEM

lib/model_context_protocol/server.rb

@@ -23,7 +23,7 @@ def initialize(name: "model_context_protocol", tools: [], prompts: [], resources
         "prompts/list" => method(:list_prompts),
         "prompts/get" => method(:get_prompt),
         "initialize" => method(:init),
-        "ping" => method(:ping),
+        "ping" => ->(_) { {} },
       }
     end
 
@@ -72,13 +72,10 @@ def prompts_get_handler(&block)
 
     def capabilities
       @capabilities ||= {
-        experimental: nil,
-        logging: nil,
-        prompts: nil,
-        resources: nil,
+        prompts: {},
+        resources: {},
         tools: {},
-        model_config: nil,
-      }.compact
+      }
     end
 
     def server_info
@@ -96,10 +93,6 @@ def init(request)
       }
     end
 
-    def ping(request)
-      "pong"
-    end
-
     def list_tools(request)
       @tools.map { |_, tool| tool.to_h }
     end

lib/model_context_protocol/version.rb

@@ -1,5 +1,5 @@
 # frozen_string_literal: true
 
 module ModelContextProtocol
-  VERSION = "0.2.4"
+  VERSION = "0.2.5"
 end

test/model_context_protocol/server_test.rb

@@ -34,18 +34,23 @@ class ServerTest < ActiveSupport::TestCase
       @server = Server.new(name: @server_name, tools: [@tool], prompts: [@prompt], resources: [@resource])
     end
 
-    test "#handle ping request returns pong" do
+    # https://spec.modelcontextprotocol.io/specification/2024-11-05/basic/utilities/ping/#behavior-requirements
+    test "#handle ping request returns empty response" do
       request = {
         jsonrpc: "2.0",
         method: "ping",
-        id: 1,
+        id: "123",
       }
 
       response = @server.handle(request)
-      refute_nil response
-
-      assert_equal "pong", response[:result]
-      assert_equal 1, response[:id]
+      assert_equal(
+        {
+          "jsonrpc": "2.0",
+          "id": "123",
+          "result": {},
+        },
+        response,
+      )
     end
 
     test "#handle initialize request returns protocol info, server info, and capabilities" do
@@ -58,11 +63,24 @@ class ServerTest < ActiveSupport::TestCase
       response = @server.handle(request)
       refute_nil response
 
-      result = response[:result]
-      assert_equal Server::PROTOCOL_VERSION, result[:protocolVersion]
-      assert_kind_of Hash, result[:capabilities]
-      assert_equal @server_name, result[:serverInfo][:name]
-      assert_equal ModelContextProtocol::VERSION, result[:serverInfo][:version]
+      expected_result = {
+        "jsonrpc": "2.0",
+        "id": 1,
+        "result": {
+          "protocolVersion": "2024-11-05",
+          "capabilities": {
+            "prompts": {},
+            "resources": {},
+            "tools": {},
+          },
+          "serverInfo": {
+            "name": @server_name,
+            "version": ModelContextProtocol::VERSION,
+          },
+        },
+      }
+
+      assert_equal expected_result, response
     end
 
     test "#handle returns nil for notification requests" do