更新日期：2026-06-06
Function Calling
POST /v1/chat/completions
gpt-5.5 在 Chat Completions 路径下会返回 tool_calls。
第一步：定义工具
curl https://api.crazyrouter.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "gpt-5.5",
"messages": [
{"role": "user", "content": "What is the weather in Beijing? Use the tool."}
],
"tools": [
{
"type": "function",
"function": {
"name": "get_weather",
"description": "Get weather info for a city",
"parameters": {
"type": "object",
"properties": {
"city": {"type": "string"}
},
"required": ["city"],
"additionalProperties": false
}
}
}
]
}'
{
"object": "chat.completion",
"model": "gpt-5.5",
"choices": [
{
"message": {
"role": "assistant",
"content": null,
"tool_calls": [
{
"id": "call_...",
"type": "function",
"function": {
"name": "get_weather",
"arguments": "{\"city\":\"Beijing\"}"
}
}
]
}
}
]
}
第二步：回传工具结果
拿到tool_calls 之后，把你的工具执行结果作为 role: "tool" 消息发回：
{
"model": "gpt-5.5",
"messages": [
{"role": "user", "content": "What is the weather in Beijing? Use the tool."},
{
"role": "assistant",
"content": null,
"tool_calls": [
{
"id": "call_123",
"type": "function",
"function": {
"name": "get_weather",
"arguments": "{\"city\":\"Beijing\"}"
}
}
]
},
{
"role": "tool",
"tool_call_id": "call_123",
"content": "{\"temperature\":22,\"condition\":\"sunny\"}"
}
],
"tools": [
{
"type": "function",
"function": {
"name": "get_weather",
"description": "Get weather info for a city",
"parameters": {
"type": "object",
"properties": {
"city": {"type": "string"}
},
"required": ["city"],
"additionalProperties": false
}
}
}
]
}
本轮生产验证确认了
tool_calls 这条主链路，同时也观察到 message.reasoning_content 这个键可能出现，但它不应作为当前工具调用流程的稳定依赖字段。