struct

Anthropic::ToolUseContent

Inherits JSON::Serializable < Struct < Value < Object

Tool use content block (from assistant)

When Claude calls a tool, the input is returned as dynamic JSON. Use input_as to parse it into a typed struct:

struct GetWeatherInput
  include JSON::Serializable
  getter location : String
  getter unit : String?
end

tool_use = message.tool_use_blocks.first
if tool_use.name == "get_weather"
  input = tool_use.input_as(GetWeatherInput)
  puts input.location # Typed access!
end

Constructors

new(id : String, name : String, input : JSON::Any)
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new(pull : JSON::PullParser)
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new(*, __pull_for_json_serializable pull : JSON::PullParser)
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Instance methods

input
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input_as(type : T.class) : T forall T

Parse input into a typed struct

Use this when you know which tool was called and want typed access to the input parameters.

input = tool_use.input_as(MyToolInput)
puts input.some_field # Type-safe!
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name
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type
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