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Merge pull request #246 from koic/fix_prompt_nil_arguments

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Fix `Prompt#validate_arguments!` crash when arguments are `nil`
This commit is contained in:
Koichi ITO 2026-03-01 18:38:14 +09:00 • committed by GitHub
commit 29a32900fd
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1 changed files with 50 additions and 4 deletions
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7
lib/mcp/prompt.rb
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@ -21,7 +21,7 @@ module MCP
title: title_value,
description: description_value,
icons: icons_value&.then { |icons| icons.empty? ? nil : icons.map(&:to_h) },
arguments: arguments_value&.map(&:to_h),
arguments: arguments_value.empty? ? nil : arguments_value.map(&:to_h),
_meta: meta_value,
}.compact
end
@ -32,7 +32,7 @@ module MCP
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(:@arguments_value, [])
subclass.instance_variable_set(:@meta_value, nil)
end
@ -76,7 +76,7 @@ module MCP
if value == NOT_SET
@arguments_value
else
@arguments_value = value
@arguments_value = Array(value)
end
end
@ -103,6 +103,7 @@ module MCP
end
def validate_arguments!(args)
args ||= {}
missing = required_args - args.keys
return if missing.empty?