Native Claude Format

Requests in Anthropic Claude Messages API format. Requires anthropic-version in the request header.

Base URL

https://autorouter.top — Production

Authentication

BearerAuth: http (bearer) Authenticate using a Bearer Token. Format: Authorization: Bearer sk-xxxxxx

Endpoints

POST `/v1/messages`

Native Claude Format

Requests in Anthropic Claude Messages API format. Requires anthropic-version in the request header.

Parameters

Name	In	Type	Required	Description
`anthropic-version`	header	string	Yes	Anthropic API version
`x-api-key`	header	string	No	Anthropic API Key (optional, can also use Bearer Token)

Request Body

Content-Type: application/json

Properties:

Name	Type	Required	Description
`model`	string	Yes	-
`messages`	array	Yes	-
`system`	oneOf	No	-
`max_tokens`	integer	Yes	-
`temperature`	number	No	-
`top_p`	number	No	-
`top_k`	integer	No	-
`stream`	boolean	No	-
`stop_sequences`	array	No	-
`tools`	array	No	-
`tool_choice`	oneOf	No	-
`thinking`	object	No	-
`metadata`	object	No	-

Responses

200: Successfully created response

Content-Type: application/json

Request Example

curl -X POST "https://autorouter.top/v1/messages" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "claude-sonnet-4-6",
  "max_tokens": 1024,
  "messages": [
    {
      "role": "user",
      "content": "Hello, please introduce yourself."
    }
  ]
}'

Response Examples

{
  "id": "string",
  "type": "message",
  "role": "assistant",
  "content": [
    {
      "type": "string",
      "text": "string"
    }
  ],
  "model": "string",
  "stop_reason": "end_turn",
  "usage": {
    "input_tokens": 0,
    "output_tokens": 0,
    "cache_creation_input_tokens": 0,
    "cache_read_input_tokens": 0
  }
}

Native Claude Format

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