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Support icons parameter

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This PR adds support for the optional `icons` parameter in prompt, resource,
resource template, and server info.

The specifications for `icons` are as follows.
https://modelcontextprotocol.io/specification/2025-11-25/schema#icon

Resolves https://github.com/modelcontextprotocol/ruby-sdk/issues/127.
This commit is contained in:
Koichi ITO 2025-12-30 05:35:22 +09:00
commit 028c5f3291
1 changed files with 139 additions and 15 deletions
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14
lib/mcp/prompt.rb
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@ -7,6 +7,7 @@ module MCP
attr_reader :title_value
attr_reader :description_value
attr_reader :icons_value
attr_reader :arguments_value
attr_reader :meta_value
@ -19,6 +20,7 @@ module MCP
name: name_value,
title: title_value,
description: description_value,
icons: icons&.map(&:to_h),
arguments: arguments_value&.map(&:to_h),
_meta: meta_value,
}.compact
@ -29,6 +31,7 @@ module MCP
subclass.instance_variable_set(:@name_value, nil)
subclass.instance_variable_set(:@title_value, nil)
subclass.instance_variable_set(:@description_value, nil)
subclass.instance_variable_set(:@icons_value, nil)
subclass.instance_variable_set(:@arguments_value, nil)
subclass.instance_variable_set(:@meta_value, nil)
end
@ -61,6 +64,14 @@ module MCP
end
end
def icons(value = NOT_SET)
if value == NOT_SET
@icons_value
else
@icons_value = value
end
end
def arguments(value = NOT_SET)
if value == NOT_SET
@arguments_value
@ -77,11 +88,12 @@ module MCP
end
end
def define(name: nil, title: nil, description: nil, arguments: [], meta: nil, &block)
def define(name: nil, title: nil, description: nil, icons: [], arguments: [], meta: nil, &block)
Class.new(self) do
prompt_name name
title title
description description
icons icons
arguments arguments
define_singleton_method(:template) do |args, server_context: nil|
instance_exec(args, server_context:, &block)