dial-sdk 0.18.0

Official Dial SDK — phone numbers, SMS, WhatsApp, and voice calls for AI agents

dial-sdk

Official Python SDK for Dial — phone numbers, SMS, WhatsApp, and voice calls for AI agents.

Install

pip install dial-sdk
# or
uv add dial-sdk

Requires Python 3.11+.

Quickstart

The client is async. Construct it with a DialConfig, then call its methods inside an async with block:

import asyncio
from dial_sdk import DialClient, DialConfig, SendMessageParams, MakeCallParams

async def main():
    async with DialClient(DialConfig(api_key="sk_live_...")) as dial:
        # List your numbers
        numbers = await dial.list_numbers()
        from_id = numbers[0].id

        # Send an SMS
        await dial.send_message(SendMessageParams(
            to="[phone]",
            from_number_id=from_id,
            body="Hello from Dial",
        ))

        # Place an AI voice call
        call = await dial.make_call(MakeCallParams(
            to="[phone]",
            from_number_id=from_id,
            outbound_instruction="You are a friendly assistant confirming an appointment.",
        ))
        print(call.id, call.status)

asyncio.run(main())

DialConfig.base_url defaults to https://api.getdial.ai. Override it for local or self-hosted setups.

Live events

Incoming messages and call transcripts stream via an async generator:

async with DialClient(DialConfig(api_key="sk_live_...")) as dial:
    async with dial.new_events_connection() as events:
        async for event in events:
            print(event)  # MessageEvent / CallEvent / CallTranscribed / ...

Client methods

Method	Description
list_numbers()	List the phone numbers on your account
purchase_number(params)	Buy a new number (PurchaseNumberParams)
set_number_properties(...)	Update a number's nickname / inbound instruction
send_message(params)	Send an SMS or WhatsApp message (SendMessageParams)
reply_to_message(message_id, *, body=None, reaction=None)	Reply or react to a message (exactly one of body/reaction)
list_messages(...)	List messages, optionally filtered
make_call(params)	Place an outbound AI voice call (MakeCallParams)
list_calls(...)	List calls, optionally filtered
get_call(call_id)	Fetch a single call
new_events_connection()	Open a live event stream

Related

• dial-langchain — these capabilities as LangChain tools.
• Documentation