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POST
/
create-chat-completion
JavaScript
import Retell from 'retell-sdk';

const client = new Retell({
  apiKey: process.env['RETELL_API_KEY'], // This is the default and can be omitted
});

const response = await client.chat.createChatCompletion({
  chat_id: 'oBeDLoLOeuAbiuaMFXRtDOLriTJ5tSxD',
  content: 'hi how are you doing?',
});

console.log(response.messages);
{
  "messages": [
    {
      "message_id": "Jabr9TXYYJHfvl6Syypi88rdAHYHmcq6",
      "role": "agent",
      "content": "hi how are you doing?",
      "created_timestamp": 1703302428855
    }
  ]
}

Documentation Index

Fetch the complete documentation index at: https://docs.retellai.com/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

Authentication header containing API key (find it in dashboard). The format is "Bearer YOUR_API_KEY"

Body

application/json
​
chat_id
string
required

Unique id of the chat to create completion.

Example:

"oBeDLoLOeuAbiuaMFXRtDOLriTJ5tSxD"

​
content
string
required

user message to generate agent chat completion.

Example:

"hi how are you doing?"

Response

Successfully created chat completion.

​
messages
object[]
required

New messages generated by the agent during this completion, including any tool call invocations and their results. Does not include the original input messages.