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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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29
test/mcp/tool_test.rb
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@ -7,6 +7,7 @@ module MCP
class TestTool < Tool
tool_name "test_tool"
description "a test tool for testing"
icons [Icon.new(mime_type: "image/png", sizes: ["48x48", "96x96"], src: "https://example.com", theme: "light")]
input_schema({ properties: { message: { type: "string" } }, required: ["message"] })
annotations(
destructive_hint: false,
@ -26,13 +27,22 @@ module MCP
end
end
test "#to_h returns a hash with name, description, and inputSchema" do
test "#to_h returns a hash including name, description, icons, and inputSchema" do
expected = {
name: "mock_tool",
title: "Mock Tool",
description: "a mock tool for testing",
icons: [{ mimeType: "image/png", sizes: ["48x48", "96x96"], src: "https://example.com", theme: "light" }],
inputSchema: { type: "object" },
}
tool = Tool.define(
name: "mock_tool",
title: "Mock Tool",
description: "a mock tool for testing",
icons: [Icon.new(mime_type: "image/png", sizes: ["48x48", "96x96"], src: "https://example.com", theme: "light")],
)
assert_equal({ name: "mock_tool", title: "Mock Tool", description: "a mock tool for testing", inputSchema: { type: "object" } }, tool.to_h)
assert_equal(expected, tool.to_h)
end
test "#to_h does not have `:title` key when title is omitted" do
@ -308,19 +318,22 @@ module MCP
end
test "#to_h includes outputSchema when present" do
tool = Tool.define(
name: "mock_tool",
title: "Mock Tool",
description: "a mock tool for testing",
output_schema: { properties: { result: { type: "string" } }, required: ["result"] },
)
expected = {
name: "mock_tool",
title: "Mock Tool",
description: "a mock tool for testing",
icons: [{ mimeType: "image/png", sizes: ["48x48", "96x96"], src: "https://example.com", theme: "light" }],
inputSchema: { type: "object" },
outputSchema: { type: "object", properties: { result: { type: "string" } }, required: ["result"] },
}
tool = Tool.define(
name: "mock_tool",
title: "Mock Tool",
description: "a mock tool for testing",
icons: [Icon.new(mime_type: "image/png", sizes: ["48x48", "96x96"], src: "https://example.com", theme: "light")],
output_schema: { properties: { result: { type: "string" } }, required: ["result"] },
)
assert_equal expected, tool.to_h
end