modelcontextprotocol/ruby-sdk
Watch
1
0
Fork
You've already forked ruby-sdk
 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add support for _meta field on tool schema (#124)

Browse source 
* Add support for _meta field on tool schema

* use `meta` naming for `_meta` field on tool schema

* apply suggestions to fix `_meta` tests

Co-authored-by: Ateş Göral <ates@magnetiq.com>

* Update lib/mcp/tool.rb

Co-authored-by: Ateş Göral <ates@magnetiq.com>

* Update lib/mcp/tool.rb

Co-authored-by: Ateş Göral <ates@magnetiq.com>

---------

Co-authored-by: Topher Bullock <topherbullock@users.noreply.github.com>
Co-authored-by: Ateş Göral <ates@magnetiq.com>
This commit is contained in:
Tyler Untisz 2025-10-01 15:21:27 -06:00 • committed by GitHub
commit 73cec83b99
No known key found for this signature in database
GPG key ID: B5690EEEBB952194
2 changed files with 71 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

4
lib/mcp/server.rb
View file

@ -96,8 +96,8 @@ module MCP
end
end
def define_tool(name: nil, title: nil, description: nil, input_schema: nil, annotations: nil, &block)
tool = Tool.define(name:, title:, description:, input_schema:, annotations:, &block)
def define_tool(name: nil, title: nil, description: nil, input_schema: nil, annotations: nil, meta: nil, &block)
tool = Tool.define(name:, title:, description:, input_schema:, annotations:, meta:, &block)
@tools[tool.name_value] = tool
validate!

14
lib/mcp/tool.rb
View file

@ -8,6 +8,7 @@ module MCP
attr_reader :title_value
attr_reader :description_value
attr_reader :annotations_value
attr_reader :meta_value
def call(*args, server_context: nil)
raise NotImplementedError, "Subclasses must implement call"
@ -21,6 +22,7 @@ module MCP
inputSchema: input_schema_value.to_h,
outputSchema: @output_schema_value&.to_h,
annotations: annotations_value&.to_h,
_meta: meta_value,
}.compact
end
@ -32,6 +34,7 @@ module MCP
subclass.instance_variable_set(:@input_schema_value, nil)
subclass.instance_variable_set(:@output_schema_value, nil)
subclass.instance_variable_set(:@annotations_value, nil)
subclass.instance_variable_set(:@meta_value, nil)
end
def tool_name(value = NOT_SET)
@ -90,6 +93,14 @@ module MCP
end
end
def meta(value = NOT_SET)
if value == NOT_SET
@meta_value
else
@meta_value = value
end
end
def annotations(hash = NOT_SET)
if hash == NOT_SET
@annotations_value
@ -98,12 +109,13 @@ module MCP
end
end
def define(name: nil, title: nil, description: nil, input_schema: nil, output_schema: nil, annotations: nil, &block)
def define(name: nil, title: nil, description: nil, input_schema: nil, output_schema: nil, meta: nil, annotations: nil, &block)
Class.new(self) do
tool_name name
title title
description description
input_schema input_schema
meta meta
output_schema output_schema
self.annotations(annotations) if annotations
define_singleton_method(:call, &block) if block