Bedrockをpythonで呼ぶコード

bedrock.py

REGION = os.getenv("AWS_REGION", "us-east-1")
brt = boto3.client("bedrock-runtime", region_name=REGION)

def call_claude(model_id: str, user_text: str, max_tokens=600, temperature=0):
    body = {
        "anthropic_version": "bedrock-2023-05-31",
        "max_tokens": max_tokens,
        "temperature": temperature,
        "messages": [{"role": "user", "content": [{"type":"text","text": user_text}]}]
    }
    resp = brt.invoke_model(
        modelId=model_id,
        contentType="application/json",
        accept="application/json",
        body=json.dumps(body)
    )
    out = json.loads(resp["body"].read())
    parts = out.get("content", [])
    text = "\n".join([p.get("text","") for p in parts if p.get("type")=="text"]).strip()
    return text

# 評価モデル（Claude Sonnet 4 - 推論プロファイル経由）
EVAL_MODEL_ID = "us.anthropic.claude-sonnet-4-20250514-v1:0"  # 推論プロファイルID
raw = call_claude(EVAL_MODEL_ID, prompt, max_tokens=400, temperature=0)