Tether, the company behind the world’s most widely used stablecoin, has just released its Wallet Development Kit (WDK) as open-source software. This toolkit is designed to make it easier for developers, businesses, and even AI systems to create secure, self-custodial digital wallets that can work across multiple blockchains.

The WDK is part of Tether’s plan to support decentralized finance (DeFi) and expand access to programmable money. It gives users full control over their funds and doesn’t lock them into any specific blockchain or ecosystem. It works on all types of devices — from smartphones and desktops to IoT gadgets and embedded systems — making it possible to build wallets that are as easy to use as email or messaging apps.

**Putting Wallet Power in Everyone’s Hands**

Tether’s WDK allows anyone — from solo developers to governments — to create wallets for different uses like payments, savings, gaming, DeFi, and prediction markets. The best part? It’s completely free to use with no hidden fees or licensing costs. That means developers can build freely without restrictions.

Paolo Ardoino, Tether’s CEO, said that self-custodial wallets are key to financial freedom. Tether sees a future where not just people, but also AI agents and smart machines, can manage their own digital money.

**Supports Many Blockchains and Real Use Cases**

Unlike other wallet tools that limit what you can do or charge fees, Tether’s WDK is open-source and supports many blockchains. These include Bitcoin, Ethereum, Polygon, Solana, TON, the Lightning Network, and both EVM and non-EVM chains.

This makes it easier for developers to build wallets that work across different networks. The WDK also includes features like customizable user interfaces, secure key management tools, and support for DeFi functions like lending, staking, and swaps. Users don’t need to worry about things like gas fees or bridging tokens — the toolkit simplifies it all.

**Built for the Future: AI Wallets and Smart Devices**

Tether wants WDK to be a foundation for the next generation of digital finance. The goal is to enable not just people but also machines — like trading bots, smart fridges, or even spacecraft — to handle digital transactions on their own.

Projects like Rumble Wallet and Tether’s upcoming self-custodial wallet are already using WDK. These examples show how flexible and scalable the toolkit is for both personal and institutional applications.

**Pushing Forward on Privacy and Control**

Tether is also investing in other privacy-focused tools. In May, it backed Zengo Wallet — a secure crypto wallet that doesn’t use traditional seed phrases. This fits into Tether’s bigger mission of promoting financial inclusion by giving people around the world access to a stable currency without relying on banks or third parties.

With the launch of its open-source Wallet Development Kit, Tether is setting the stage for more innovation in the crypto space. By making wallet development easier and more accessible, they’re paving the way for a more connected and decentralized financial future.