SDKs

While you can use our REST API for most operations, we recommend using our SDKs to speed up development and reduce code complexity. Our SDKs provide typed methods and a more structured approach to integrating with Retell.

Available SDKs & Requirements

Node.js TypeScript SDK
- NPM Package
- Requires Node.js version 18.10.0 or higher
Python SDK
- PyPI Package
- Requires Python 3.x

Get Your API Key

Navigate to the “API Keys” tab in your dashboard to obtain your API key

Install the SDK

Choose your preferred language and install the SDK:

Node Client

Python Client

Node Client

Python Client

Initialize the Client

Create a new client instance using your API key:

Node Client

Python Client

Node Client

Python Client

Make API Calls

Here’s an example of making a phone call using the SDK:

Node Client

Python Client

Node Client

Python Client

try:
  response = await retell_client.call.create_phone_call(
    from_number="+14157774444",
    to_number="+12137774445"
  )
  print(f"Call initiated: {response}")
except Exception as e:
  print(f"Error making call: {e}")

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SDKs

Available SDKs & Requirements

Get Your API Key

Install the SDK

Initialize the Client

Make API Calls

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