Native Claude Format

POST

/v1/messages

Introduction

Claude's native message interface, suitable for native Anthropic clients such as Claude Code. This interface complies with Anthropic's API specifications and provides full feature support for Claude models, including advanced capabilities like Extended Thinking and tool calling.

You can test different scenarios by switching the Body example below or by setting the stream field to true.

All requests share the following headers:

x-api-key: sk-xxx (or use Authorization)

anthropic-version: 2023-06-01

content-type: application/json

When stream=true, the response will be an SSE stream (content-type: text/event-stream), and the event types follow the native Anthropic specification (message_start / content_block_start / content_block_delta / content_block_stop / message_delta / message_stop).

Request

Body Params application/jsonRequired

Examples

Responses

🟢200

application/json

Bodyapplication/json

🟠400

🟠401

🟠403

Request Example

Shell

JavaScript

Java

Swift

cURL

TextSystem InstructionChatFunction Calling

curl --location 'https://api.aboai.ai/v1/messages' \
--header 'Content-Type: application/json' \
--data '{
    "model": "claude-sonnet-4.5",
    "max_tokens": 1024,
    "messages": [
        {
            "role": "user",
            "content": "Hello, nice to meet you"
        }
    ]
}'

Response Example

200 - 成功示例

{
    "model": "claude-sonnet-4-5-20250929",
    "id": "msg_bdrk_01DJBYweRg351XHSgq6JcTsE",
    "type": "message",
    "role": "assistant",
    "content": [
        {
            "type": "text",
            "text": "Hello! Nice to meet you too! How are you doing today? Is there anything I can help you with?"
        }
    ],
    "stop_reason": "end_turn",
    "usage": {
        "input_tokens": 13,
        "cache_creation_input_tokens": 0,
        "cache_read_input_tokens": 0,
        "cache_creation": {
            "ephemeral_5m_input_tokens": 0,
            "ephemeral_1h_input_tokens": 0
        },
        "output_tokens": 26
    }
}

Modified at 2026-06-16 03:09:37

Native Gemini Format

Responses Request (openai)

Native Claude Format

Introduction#

Request

Responses

Introduction