Anthropic 官方原生格式。将官方 SDK 的 base_url 指向 ZeroFA 即可直接迁移，鉴权、计费和路由由 ZeroFA 统一处理。
https://zerofa.ai/v1/messagesx-api-keystring必填sk-zerofa-xxxanthropic-versionstring必填2023-06-01Content-Typestring必填application/jsonmodelstring必填claude-sonnet-4-6max_tokensinteger必填1024messagesarray必填[{"role":"user","content":"hi"}]systemstring可选你是一个简洁的助手temperaturenumber 0–1可选1.0top_pnumber 0–1可选1.0stop_sequencesstring[]可选streamboolean可选falsetools / tool_choicearray / object可选用下面的示例确认请求格式与返回结构。需要在线发起请求时，点击页面顶部“调试”拉起在线运行面板。
curl https://zerofa.ai/v1/messages \
-H "x-api-key: sk-zerofa-xxx" \
-H "anthropic-version: 2023-06-01" \
-H "Content-Type: application/json" \
-d '{
"model": "claude-sonnet-4-6",
"max_tokens": 1024,
"messages": [{"role": "user", "content": "你好"}]
}'{
"id": "msg_...",
"type": "message",
"role": "assistant",
"content": [{ "type": "text", "text": "你好！有什么可以帮你？" }],
"model": "claude-sonnet-4-6",
"stop_reason": "end_turn",
"usage": { "input_tokens": 10, "output_tokens": 25 }
}