Builders Program

Build with us for a whole month. Unlimited usage and add-ons, weekly calls and your own Slack channel.

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Polymorfa Builders Program

Build with us for a whole month, for free.

30 days building your WhatsApp product with our engineers. Your usage and add-ons are on us.

Apply to the Builders Program

10–20 teams per cohort

Everything a team needs to ship, for 30 days.

  • Unlimited usage and add-ons, all month

    Connect numbers, send as much as you need and use every add-on for the whole month. We cover the spend.

  • Weekly video sessions

    A live call with our team every week of the month, focused on your stack and your blockers.

  • Your own Slack channel

    A dedicated channel with our engineers and the cohort, to discuss things and get ahead of the game.

  • Hands-on build help

    Bring a real workflow. We help you connect it, onboard your customers and ship.

Learn WhatsApp from the people who write the libraries.

Most teams find out how WhatsApp really behaves one outage at a time. In the program you get that knowledge first, from the engineers who work on the code underneath.

  • Baileys

    TypeScript11.2k

    The most downloaded WhatsApp library, 1.4M a week on npm

    Maintained by Rajeh Taher, with João Lucas de Oliveira Lopes

    Used byOpenClaw, BotConversaand thousands of others

  • whatsapp-web.js

    JavaScript22.7k

    The largest WhatsApp library by GitHub stars

    Maintained by Rajeh Taher, who has worked on it since 2020

    Used byWAHA, Whaticketand thousands of others

  • whatsmeow

    Go7.4k

    The Go library for the WhatsApp multidevice API

    Long-time contributions from Rajeh Taher

    Used byOpenClaw, Beeperand thousands of others

  • whatsapp-rust

    Rust841

    A WhatsApp client written purely in Rust

    Maintained by João Lucas de Oliveira Lopes

    Used bymoltis, Zapfastand thousands of others

  • HyperMeow

    Go67

    whatsmeow, industrialized for massive scale

    Our own open-source library

    Used byPolymorfaand hundreds of others

  • meowcaller

    Go263

    The first pure MLOW implementation

    WhatsApp calling for whatsmeow, written by Rajeh Taher

    Used byPolymorfa, OpenClawand hundreds of others

Go wild.

Start making real revenue without watching the meter. Connect every number your customers bring, send as much as they need and switch on every add-on. Scale as far as you can in 30 days. None of it costs you anything.

What usage normally costs, and what it costs in the Builders Program
Numbers you connectNormally, per monthIn the program
10$75$0
50$300$0
200$857$0

How it works

  1. 01

    Apply

    Tell us what you are building and who it is for. We pick 10–20 teams for each cohort.

  2. 02

    Kick off with our engineers

    In the first session we look at your product together and agree on what you will ship.

  3. 03

    Build in weekly sessions

    Every week you bring your blockers to a video call with our team. Between calls, the Slack channel is open.

  4. 04

    Ship it

    You go live with your usage and add-ons covered, and with people who know your setup a message away.

What you leave with

  • A product live on WhatsApp

    Not a prototype. Real numbers, real customers, running on the same API you keep using afterwards.

  • An integration reviewed by the people who build the API

    Your webhooks, retries, pairing flow and calling setup, checked by the engineers who designed them.

  • A month of runway you did not pay for

    Every number, message and add-on your team uses during the program is covered.

Questions

What does the Builders Program cost?
Nothing. Your usage and add-ons are covered for all 30 days of the program.
What does unlimited usage include?
Numbers, messages and every add-on your team uses during the program. You do not buy credits for any of it.
How often do we meet?
Once a week, on a video call with the Polymorfa team. Between calls, you talk to our engineers and the rest of the cohort in your own Slack channel.
Who can apply?
Agencies and SaaS teams that already serve customers on WhatsApp, or are about to. Tell us what you are building in the application.
What happens when the program ends?
Your team keeps its projects, numbers and settings, and continues on standard Polymorfa pricing.

At most 20 teams per cohort

Bring your product. We help you ship it.

Applications are reviewed per cohort. The sooner you tell us what you are building, the sooner you start.

Apply to the Builders Program