47d29e8014
Since the optional `title` becomes `title: null` when not provided, the following error occurs.
This occurs with Claude Code 1.0.100.
```console
[DEBUG] MCP server "example": Connection failed after 1591ms: [
{
"code": "invalid_type",
"expected": "string",
"received": "null",
"path": [
"serverInfo",
"title"
],
"message": "Expected string, received null"
}
]
```
By adding `compact`, the `title` key will be removed if the optional `title` keyword argument is not specified.
100 lines
2.6 KiB
Ruby
100 lines
2.6 KiB
Ruby
# frozen_string_literal: true
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module MCP
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class Tool
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class << self
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NOT_SET = Object.new
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attr_reader :title_value
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attr_reader :description_value
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attr_reader :annotations_value
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def call(*args, server_context: nil)
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raise NotImplementedError, "Subclasses must implement call"
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end
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def to_h
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result = {
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name: name_value,
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title: title_value,
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description: description_value,
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inputSchema: input_schema_value.to_h,
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}.compact
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result[:annotations] = annotations_value.to_h if annotations_value
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result
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end
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def inherited(subclass)
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super
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subclass.instance_variable_set(:@name_value, nil)
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subclass.instance_variable_set(:@title_value, nil)
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subclass.instance_variable_set(:@description_value, nil)
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subclass.instance_variable_set(:@input_schema_value, nil)
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subclass.instance_variable_set(:@annotations_value, nil)
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end
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def tool_name(value = NOT_SET)
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if value == NOT_SET
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name_value
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else
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@name_value = value
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end
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end
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def name_value
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@name_value || StringUtils.handle_from_class_name(name)
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end
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def input_schema_value
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@input_schema_value || InputSchema.new
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end
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def title(value = NOT_SET)
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if value == NOT_SET
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@title_value
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else
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@title_value = value
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end
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end
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def description(value = NOT_SET)
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if value == NOT_SET
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@description_value
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else
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@description_value = value
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end
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end
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def input_schema(value = NOT_SET)
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if value == NOT_SET
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input_schema_value
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elsif value.is_a?(Hash)
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properties = value[:properties] || value["properties"] || {}
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required = value[:required] || value["required"] || []
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@input_schema_value = InputSchema.new(properties:, required:)
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elsif value.is_a?(InputSchema)
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@input_schema_value = value
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end
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end
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def annotations(hash = NOT_SET)
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if hash == NOT_SET
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@annotations_value
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else
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@annotations_value = Annotations.new(**hash)
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end
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end
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def define(name: nil, title: nil, description: nil, input_schema: nil, annotations: nil, &block)
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Class.new(self) do
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tool_name name
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title title
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description description
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input_schema input_schema
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self.annotations(annotations) if annotations
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define_singleton_method(:call, &block) if block
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end
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end
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end
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end
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end
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