Claude API 요청 시, "messages.0.cache_control: Extra inputs are not permitted" 에러

Curl 로 Claude API 요청 시, 아래와 같은 오류가 발생하였다.

# 오류
"messages.0.cache_control: Extra inputs are not permitted"

 

# 해결 방법

아래와 같이 "cache_control": {"type": "ephemeral"} 부분을 "content"와 동일한 레벨이 아닌 "content" 내부에 위치시킨다.

curl https://api.anthropic.com/v1/messages \
     --header "x-api-key: $ANTHROPIC_API_KEY" \
     --header "anthropic-version: 2023-06-01" \
     --header "content-type: application/json" \
     --data \
'{
    "model": "claude-3-5-sonnet-20241022",
    "max_tokens": 1024,
    "system": [
        {
            "type": "text",
            "text": "...long system prompt",
            "cache_control": {"type": "ephemeral"}
        }
    ],
    "messages": [
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "Hello, can you tell me more about the solar system?",
                }
            ]
        },
        {
            "role": "assistant",
            "content": "Certainly! The solar system is the collection of celestial bodies that orbit our Sun. It consists of eight planets, numerous moons, asteroids, comets, and other objects. The planets, in order from closest to farthest from the Sun, are: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Each planet has its own unique characteristics and features. Is there a specific aspect of the solar system you would like to know more about?"
        },
        {
            "role": "user",
            "content": [
                {
                    "type": "text",
                    "text": "Tell me more about Mars.",
                    "cache_control": {"type": "ephemeral"}
                }
            ]
        }
    ]
}'