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v1

latestOpenAPI 3.0.1MIT2026-07-26236440.2 KB

Create Message (Anthropic)

Create a message using Anthropic format

post/messages

Request body

modelstring required
max_tokensinteger

Maximum tokens to generate

temperaturenumber
top_pnumber
top_kinteger
streamboolean
systemstring

System prompt

reasoning_effort'none' | 'minimal' | 'low' | 'medium' | 'high' | 'xhigh'

Reasoning effort level. Silently ignored for models that do not support reasoning_effort.

Example request

{
  "model": "claude-3-5-sonnet-20241022",
  "messages": [
    {
      "content": [
        {
          "source": {
            "media_type": "image/jpeg"
          }
        }
      ]
    }
  ]
}

Response

Success

idstring required
type'message' required
role'assistant' required
modelstring required
stop_reason'end_turn' | 'max_tokens' | 'stop_sequence' | 'tool_use' nullable required
stop_sequencestring nullable

Example response

{
  "content": [
    {
      "source": {
        "media_type": "image/jpeg"
      }
    }
  ]
}