voice-ai

Patter: Own Your Voice AI Stack

Name: Patter: Own Your Voice AI Stack
Author: PatterAI

Give your AI agent a phone number with Patter, an open-source voice-AI SDK for founders, with support for Python and TypeScript.

1,018 stars104 forksPythonHealth Score 9/10Updated 7/15/2026100% free · open source

What it does

Patter gives your AI agent a phone number, allowing users to interact with your AI via voice calls using a simple, open-source voice-AI SDK

Install / run

pip install patter

When to use it

•You want to build a conversational AI interface that users can interact with over the phone
•You need a lightweight, customizable voice-AI solution that integrates with your existing tech stack
•You prefer to own and control the underlying infrastructure and data for your AI-powered voice applications

Quick start

1Create a new Patter project by running `patter init`
2Configure your Patter project to use a supported telecom provider like Twilio, Telnyx, or Plivo by editing the `config.json` file
3Define your AI agent's voice interaction logic using Python or TypeScript, referencing the Patter SDK documentation for available APIs and examples
4Start your Patter server and make it accessible to users by running `patter start`
5Test your Patter-powered voice AI application by calling the assigned phone number and interacting with your AI agent

Ready-to-paste prompt

Create a simple voice-powered FAQs system by defining a Patter intent like `FAQ_INTENT = patter.Intent('faq', ['What is Patter?', 'How do I use Patter?'])`

Heads up: You need to sign up for an account with a supported telecom provider like Twilio, Telnyx, or Plivo and obtain the necessary API credentials to configure Patter

Saves to your device

Topics

ai-agent

ai-phone-agent

hermes-agent

llm

mastra

open-source

openai

openclaw

python

realtime-api

sdk

speech-to-text

telnyx

text-to-speech

twilio

typescript

vapi-alternative

voice-agent

voice-ai

voicebot

How Patter: Own Your Voice AI Stack works

Codeflow

Free to inspect

Patter: Own Your Voice AI Stack is a very large Python project (~117k lines across 429 code files, plus 361 test files). Setup is light: installs like a normal app — add your API keys. Reading the code is optional. Last commit this month, MIT license, has a test suite.

Size

Very large codebase

~117k lines · 429 code files · days to read — use, don't read

Setup

One-command install

Installs like a normal app — add your API keys. Reading the code is optional.

Runs on

Docker

Needs API keys (.env)

Python 50%TypeScript 44%HTML 5%

Where to start reading

1
README.md
Start here — what it does and how to install it
2
AGENTS.md
The instructions the AI actually follows
3
create-getpatter/index.js
Where the program starts running
4
.env.example
The API keys and settings you must provide
5
examples/hermes-phone-agent/.env.example
A worked example — copy this to get going