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To extract the useful response message, i.e. "Hi! My name is Claude." - you would use the JQL query content[0].text, which selects and extracts text from the string "Hi! My name is Claude.". Similarly, the query model would select . First from the root of the document it selects the value of the "content" field (an array) and selects the object at index 0; next from that object it selects the "text" field, resulting in the string we needed.
Similarly, to extract the model used - you would use the JQL query model. From the root of the JSON document it selects the value of the "model" field and extract extracts the text from the string , i.e. "claude-3-5-sonnet-20241022".