#Create a Claude message

Request in Anthropic Claude Messages API format. The anthropic-version header is required.

Service root: https://getrouter.ai

Protocol: Anthropic Messages

Authentication: x-api-key: YOUR_API_KEY

#Parameters

#Request body

The request body is optional. Media type: application/json

#Request fields

#Example request

curl --request POST \
  --url https://getrouter.ai/v1/messages \
  --header "x-api-key: YOUR_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
  "model": "MODEL_ID",
  "messages": [
    {
      "role": "user",
      "content": "Hello, introduce yourself."
    }
  ],
  "max_tokens": 1,
  "stream": false,
  "temperature": 0
}'

#Responses

#Success response fields

#Example response

{
  "id": "string",
  "type": "string",
  "role": "user",
  "content": [
    {
      "type": "string",
      "text": "string"
    }
  ],
  "model": "MODEL_ID",
  "stop_reason": "end_turn",
  "usage": {
    "input_tokens": 1,
    "output_tokens": 1,
    "cache_creation_input_tokens": 1,
    "cache_read_input_tokens": 1
  }
}

#Related guide

For complete workflows and examples, read the Claude Messages API Guide.

This page is generated from the public Relay OpenAPI specification. Browse the complete specification in the API Explorer.