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Merge pull request #310 from koic/add_meta_field_support

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Add `_meta` field to resource, content, and result classes
This commit is contained in:
Koichi ITO 2026-04-12 00:45:20 +09:00 • committed by GitHub
commit 88248fc4c7
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6 changed files with 269 additions and 29 deletions
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28
lib/mcp/content.rb
View file

@ -3,56 +3,60 @@
module MCP
module Content
class Text
attr_reader :text, :annotations
attr_reader :text, :annotations, :meta
def initialize(text, annotations: nil)
def initialize(text, annotations: nil, meta: nil)
@text = text
@annotations = annotations
@meta = meta
end
def to_h
{ text: text, annotations: annotations, type: "text" }.compact
{ text: text, annotations: annotations, _meta: meta, type: "text" }.compact
end
end
class Image
attr_reader :data, :mime_type, :annotations
attr_reader :data, :mime_type, :annotations, :meta
def initialize(data, mime_type, annotations: nil)
def initialize(data, mime_type, annotations: nil, meta: nil)
@data = data
@mime_type = mime_type
@annotations = annotations
@meta = meta
end
def to_h
{ data: data, mimeType: mime_type, annotations: annotations, type: "image" }.compact
{ data: data, mimeType: mime_type, annotations: annotations, _meta: meta, type: "image" }.compact
end
end
class Audio
attr_reader :data, :mime_type, :annotations
attr_reader :data, :mime_type, :annotations, :meta
def initialize(data, mime_type, annotations: nil)
def initialize(data, mime_type, annotations: nil, meta: nil)
@data = data
@mime_type = mime_type
@annotations = annotations
@meta = meta
end
def to_h
{ data: data, mimeType: mime_type, annotations: annotations, type: "audio" }.compact
{ data: data, mimeType: mime_type, annotations: annotations, _meta: meta, type: "audio" }.compact
end
end
class EmbeddedResource
attr_reader :resource, :annotations
attr_reader :resource, :annotations, :meta
def initialize(resource, annotations: nil)
def initialize(resource, annotations: nil, meta: nil)
@resource = resource
@annotations = annotations
@meta = meta
end
def to_h
{ resource: resource.to_h, annotations: annotations, type: "resource" }.compact
{ resource: resource.to_h, annotations: annotations, _meta: meta, type: "resource" }.compact
end
end
end

7
lib/mcp/prompt/result.rb
View file

@ -3,15 +3,16 @@
module MCP
class Prompt
class Result
attr_reader :description, :messages
attr_reader :description, :messages, :meta
def initialize(description: nil, messages: [])
def initialize(description: nil, messages: [], meta: nil)
@description = description
@messages = messages
@meta = meta
end
def to_h
{ description: description, messages: messages.map(&:to_h) }.compact
{ description: description, messages: messages.map(&:to_h), _meta: meta }.compact
end
end
end

6
lib/mcp/resource.rb
View file

@ -5,15 +5,16 @@ require_relative "resource/embedded"
module MCP
class Resource
attr_reader :uri, :name, :title, :description, :icons, :mime_type
attr_reader :uri, :name, :title, :description, :icons, :mime_type, :meta
def initialize(uri:, name:, title: nil, description: nil, icons: [], mime_type: nil)
def initialize(uri:, name:, title: nil, description: nil, icons: [], mime_type: nil, meta: nil)
@uri = uri
@name = name
@title = title
@description = description
@icons = icons
@mime_type = mime_type
@meta = meta
end
def to_h
@ -24,6 +25,7 @@ module MCP
description: description,
icons: icons&.then { |icons| icons.empty? ? nil : icons.map(&:to_h) },
mimeType: mime_type,
_meta: meta,
}.compact
end
end

15
lib/mcp/resource/contents.rb
View file

@ -3,23 +3,24 @@
module MCP
class Resource
class Contents
attr_reader :uri, :mime_type
attr_reader :uri, :mime_type, :meta
def initialize(uri:, mime_type: nil)
def initialize(uri:, mime_type: nil, meta: nil)
@uri = uri
@mime_type = mime_type
@meta = meta
end
def to_h
{ uri: uri, mimeType: mime_type }.compact
{ uri: uri, mimeType: mime_type, _meta: meta }.compact
end
end
class TextContents < Contents
attr_reader :text
def initialize(text:, uri:, mime_type:)
super(uri: uri, mime_type: mime_type)
def initialize(text:, uri:, mime_type:, meta: nil)
super(uri: uri, mime_type: mime_type, meta: meta)
@text = text
end
@ -31,8 +32,8 @@ module MCP
class BlobContents < Contents
attr_reader :data
def initialize(data:, uri:, mime_type:)
super(uri: uri, mime_type: mime_type)
def initialize(data:, uri:, mime_type:, meta: nil)
super(uri: uri, mime_type: mime_type, meta: meta)
@data = data
end

6
lib/mcp/resource_template.rb
View file

@ -2,15 +2,16 @@
module MCP
class ResourceTemplate
attr_reader :uri_template, :name, :title, :description, :icons, :mime_type
attr_reader :uri_template, :name, :title, :description, :icons, :mime_type, :meta
def initialize(uri_template:, name:, title: nil, description: nil, icons: [], mime_type: nil)
def initialize(uri_template:, name:, title: nil, description: nil, icons: [], mime_type: nil, meta: nil)
@uri_template = uri_template
@name = name
@title = title
@description = description
@icons = icons
@mime_type = mime_type
@meta = meta
end
def to_h
@ -21,6 +22,7 @@ module MCP
description: description,
icons: icons&.then { |icons| icons.empty? ? nil : icons.map(&:to_h) },
mimeType: mime_type,
_meta: meta,
}.compact
end
end

7
lib/mcp/tool/response.rb
View file

@ -5,9 +5,9 @@ module MCP
class Response
NOT_GIVEN = Object.new.freeze
attr_reader :content, :structured_content
attr_reader :content, :structured_content, :meta
def initialize(content = nil, deprecated_error = NOT_GIVEN, error: false, structured_content: nil)
def initialize(content = nil, deprecated_error = NOT_GIVEN, error: false, structured_content: nil, meta: nil)
if deprecated_error != NOT_GIVEN
warn("Passing `error` with the 2nd argument of `Response.new` is deprecated. Use keyword argument like `Response.new(content, error: error)` instead.", uplevel: 1)
error = deprecated_error
@ -16,6 +16,7 @@ module MCP
@content = content || []
@error = error
@structured_content = structured_content
@meta = meta
end
def error?
@ -23,7 +24,7 @@ module MCP
end
def to_h
{ content: content, isError: error?, structuredContent: @structured_content }.compact
{ content: content, isError: error?, structuredContent: @structured_content, _meta: meta }.compact
end
end
end