Chat（tool invocation）

POST

/chat/completions

The 302 platform has added tool invocation capabilities (commonly known as Function Call) to all models.
The principle is that if the model itself does not support tool invocation, you only need to pass in the tools parameter. The 302 backend will automatically parse the parameters, convert them into prompts for the model, and transform the model output into the tool_call format.

Price: No change in the cost of existing models

Request

Header Params

Content-Type

string

required

Example:

application/json

string

required

Example:

application/json

Authorization

string

required

Fill in the API KEY generated in the management backend - API KEYS after Bearer, for example, Bearer sk-xxxx.

Example:

Bearer {{YOUR_API_KEY}}

Body Params application/json

model

string

required

The ID of the model to use. For details on which models are suitable for the chat API, please refer to the model endpoint compatibility table.

messages

array [object {2}]

required

Generate chat completion messages in chat format.

role

string

optional

content

string

optional

temperature

integer

optional

What sampling temperature to use, between 0 and 2. Higher values like 0.8 will make the output more random, while lower values like 0.2 will make it more focused and deterministic. We generally recommend altering this or top_p but not both.

top_p

integer

optional

An alternative to sampling with temperature, called nucleus sampling, where the model considers the results of the tokens with top_p probability mass. So 0.1 means only the tokens comprising the top 10% probability mass are considered. We generally recommend altering this or temperature but not both.

integer

optional

How many chat completion choices to generate for each input message.

stream

boolean

optional

If set, partial messages will be sent as they become available, similar to ChatGPT. Tokens will be sent as data-only server-sent events as they become available, with the stream terminated by a [DONE] message. See the OpenAI Cookbook for example code.

stop

string

optional

Up to 4 sequences where the API will stop generating further tokens.

max_tokens

integer

optional

The maximum number of tokens to generate in the chat completion. The total length of input tokens and generated tokens is limited by the model's context length.

presence_penalty

number

optional

A number between -2.0 and 2.0. Positive values penalize new tokens based on whether they appear in the text so far, increasing the model's likelihood to talk about new topics. See more information about frequency and presence penalties.

frequency_penalty

number

optional

A number between -2.0 and 2.0. Positive values penalize new tokens based on their existing frequency in the text so far, decreasing the model's likelihood to repeat the same line verbatim. See more information about frequency and presence penalties.

logit_bias

null

optional

Modify the likelihood of specified tokens appearing in the completion. Accepts a json object that maps tokens (specified by their token ID in the tokenizer) to an associated bias value from -100 to 100. Mathematically, the bias is added to the logits generated by the model prior to sampling. The exact effect will vary per model, but values between -1 and 1 should decrease or increase likelihood of selection; values like -100 or 100 should result in a ban or exclusive selection of the relevant token.

user

string

optional

A unique identifier representing your end-user, which can help OpenAI to monitor and detect abuse. Learn more.。

Example

{
    "model": "o1-mini",
    "messages": [
        {
            "role": "user",
            "content": "What's the weather like in Boston today?"
        }
    ],
    "tools": [
        {
            "type": "function",
            "function": {
                "name": "get_current_weather",
                "description": "Get the current weather in a given location",
                "parameters": {
                    "type": "object",
                    "properties": {
                        "location": {
                            "type": "string",
                            "description": "The city and state, e.g. San Francisco, CA"
                        },
                        "unit": {
                            "type": "string",
                            "enum": [
                                "celsius",
                                "fahrenheit"
                            ]
                        }
                    },
                    "required": [
                        "location"
                    ]
                }
            }
        }
    ]
}

Request samples

Shell

JavaScript

Java

Swift

PHP

Python

HTTP

Objective-C

Ruby

OCaml

Dart

curl --location --request POST 'https://api.302.ai/v1/chat/completions' \
--header 'Accept: application/json' \
--header 'Authorization: Bearer sk-jls4AaVBGoe1GwZD64qZA1qyKTN1MPHa4NmvH1cT68z7K1Zz' \
--header 'Content-Type: application/json' \
--data-raw '{
    "model": "o1-mini",
    "messages": [
        {
            "role": "user",
            "content": "What'\''s the weather like in Boston today?"
        }
    ],
    "tools": [
        {
            "type": "function",
            "function": {
                "name": "get_current_weather",
                "description": "Get the current weather in a given location",
                "parameters": {
                    "type": "object",
                    "properties": {
                        "location": {
                            "type": "string",
                            "description": "The city and state, e.g. San Francisco, CA"
                        },
                        "unit": {
                            "type": "string",
                            "enum": [
                                "celsius",
                                "fahrenheit"
                            ]
                        }
                    },
                    "required": [
                        "location"
                    ]
                }
            }
        }
    ]
}'

Responses

🟢200OK

application/json

Body

string

required

object

string

required

created

integer

required

choices

array [object {3}]

required

index

integer

optional

message

object

optional

finish_reason

string

optional

usage

object

required

prompt_tokens

integer

required

completion_tokens

integer

required

total_tokens

integer

required

Example

{
    "id": "chatcmpl-123",
    "object": "chat.completion",
    "created": 1677652288,
    "choices": [
        {
            "index": 0,
            "message": {
                "role": "assistant",
                "content": "\n\nHello there, how may I assist you today?"
            },
            "finish_reason": "stop"
        }
    ],
    "usage": {
        "prompt_tokens": 9,
        "completion_tokens": 12,
        "total_tokens": 21
    }
}

Modified at 2025-04-01 02:24:31

Chat（Link Parsing）

Create User