API ReferenceChat API
Native Claude Format
Last updated:
Chat
POST /messages
Authentication
Store your API key in AICENTOS_API_KEY; the shell examples expand it in the Authorization: Bearer header.
The API Key obtained under "Token Management" in the console
Location: header
Request Body
application/json
TypeScript type definition
Use the request body type in TypeScript
Response Body
application/json
application/json
application/json
export AICENTOS_API_KEY="sk-your-aicentos-api-key"
curl -X POST "https://aicentos.com/v1/messages" \
-H "Authorization: Bearer $AICENTOS_API_KEY" \
-H "Content-Type: application/json" \
-d '{ "model": "claude-sonnet-4-6", "max_tokens": 256, "messages": [ { "role": "user", "content": "Introduce yourself in one sentence" } ] }'{
"id": "string",
"type": "message",
"role": "assistant",
"content": [
{
"type": "text",
"text": "string"
}
],
"model": "string",
"stop_reason": "end_turn",
"usage": {
"input_tokens": 0,
"output_tokens": 0
}
}{
"error": {
"message": "Incorrect API key provided",
"type": "authentication_error",
"code": "invalid_api_key"
}
}{
"error": {
"message": "Incorrect API key provided",
"type": "authentication_error",
"code": "invalid_api_key"
}
}