Create a message (Anthropic Messages API)

GoModel API reference for POST /v1/messages: Create a message (Anthropic Messages API).

POST {base_url}/v1/messages

Error

A valid request URL is required to generate request examples

200

{
  "content": [
    {
      "id": "<string>",
      "input": {},
      "name": "<string>",
      "text": "<string>",
      "thinking": "<string>",
      "type": "<string>"
    }
  ],
  "id": "<string>",
  "model": "<string>",
  "role": "<string>",
  "stop_reason": "<string>",
  "stop_sequence": "<string>",
  "type": "<string>",
  "usage": {
    "cache_creation_input_tokens": 123,
    "cache_read_input_tokens": 123,
    "input_tokens": 123,
    "output_tokens": 123
  }
}

Authorizations

Authorization · string · header · required

Bearer authentication header of the form Bearer <token>, where <token> is your auth token.

Body

application/json

Anthropic Messages request

cache_control · object

max_tokens · integer

messages · object[]

Show child attributes

metadata · object

Show child attributes

model · string

stop_sequences · string[]

stream · boolean

system · string object[]

temperature · number

thinking · object

Show child attributes

tool_choice · object

Show child attributes

tools · object[]

Show child attributes

top_k · integer

top_p · number

Response

200

application/json

JSON response or SSE stream when stream=true

content · object[]

Show child attributes

id · string

model · string

role · string

stop_reason · string

stop_sequence · string

type · string

usage · object

Show child attributes