struct

Anthropic::Message

Inherits JSON::Serializable < Struct < Value < Object

Constructors

new(pull : JSON::PullParser)
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new(*, __pull_for_json_serializable pull : JSON::PullParser)
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Instance methods

container
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container_id
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content
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diagnostics
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input_transformations

Changes the API made to the request's input before showing it to the model, one entry per block in request order.

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model
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parsed_output

Get parsed output for structured outputs

When using structured outputs, Claude returns JSON in the text content. This method parses that JSON into a JSON::Any for easy access.

output = message.parsed_output
puts output["summary"].as_s
puts output["score"].as_f
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parsed_output_as(type : T.class) : T | Nil forall T

Parse structured output into a typed Crystal value

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parsed_output_as!(type : T.class) : T forall T

Parse structured output into a typed Crystal value, raising on failure

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redacted_thinking_blocks

Extract redacted thinking blocks (typed)

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refusal?

True when stop_reason == "refusal".

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refusal_stop_details

Returns the refusal stop details when the model refused the request.

Equivalent to a typed downcast of stop_details when its variant is RefusalStopDetails. Returns nil for any other (or absent) stop_details variant.

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role
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stop_details
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stop_reason
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stop_sequence
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structured_output?

Check if the response contains structured output

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text

Get combined text from all text blocks

Returns empty string if no text blocks exist.

puts message.text
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text_blocks

Extract text blocks (typed)

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thinking_blocks

Extract thinking blocks (typed)

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tool_use?

Check if tool use is requested

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tool_use_blocks

Extract tool use blocks (typed)

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type
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usage
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