Key Notes
- Tether is set to release its fully open source WDK this week.
- The kit includes starter wallets for iOS and Android to simplify creating crypto wallets.
- With this move, Tether aims to expand self-custody adoption worldwide.
Tether is preparing to launch its fully open source wallet development kit (WDK) this week. The announcement came from CEO Paolo Ardoino, who explained how the toolkit will allow developers to easily create their own non-custodial digital wallets.
In an article on X, Ardoino wrote that the WDK would include a ready-to-use “starter wallet” for iOS and Android. This would offer a demonstration of how developers can quickly assemble a complete crypto wallet using the toolkit.
Tether will release this week WDK, the Wallet Development Kit, 100% open-source.
WDK also contains a Starter Wallet for iOS and Android.
The Starter Wallet is a compact, fully functional showcase showing how easy and quick it will be for anyone to grow a complete digital asset… pic.twitter.com/n6y99yQ4zE– Paolo Ardoino 🤖 (@paoloardoino) October 14, 2025
Paolo posted a preview of the WDK wallet model in September, noting that it had already undergone a security audit.
It offers full non-custodial support, multiple backup options, and DeFi modules for lending, trading, and managing tokens like USDT and USDT0.
Here is a demo of the WDK (Wallet Development Kit) template wallet.
– build 100% on WDK by Tether
– well-encapsulated reusable UI components
– soon open source
– completely non-custodial (supports different seed backup strategies to enable a super simple user experience)
– available for… pic.twitter.com/0VRmlQLHP5– Paolo Ardoino 🤖 (@paoloardoino) September 29, 2025
Open wallet infrastructure
Tether’s Upcoming WDK Supports a Cross-Chain API That Connects Bitcoin
BTC
$110,812
24h volatility:
3.4%
Market capitalization:
$2.21T
Flight. 24h:
$77.16 billion
Ethereum
ETH
$3,957
24h volatility:
4.5%
Market capitalization:
$476.10 billion
Flight. 24h:
$54.89 billion
and TON networks
TONNE
$2.22
24h volatility:
3.5%
Market capitalization:
$5.58 billion
Flight. 24h:
$253.54 million
simplifying the process of creating multi-chain wallets.
The kit’s account abstraction (for gasless transactions) and modular architecture make it more adaptable for developers.
The open source design of the WDK aims to encourage innovation by allowing anyone to customize and launch their own digital wallets without relying on third-party custody providers.
Industry observers say this could reduce barriers that prevent companies, decentralized applications and even AI systems from integrating wallet functionality directly into their products.
With over $180 billion in USDT market capitalization and a dominant position among stablecoins, Tether’s influence in the crypto space is enormous. Analysts believe this new toolkit could further extend this dominance across multiple ecosystems.
Tether currently serves over 400 million users and has expanded its reach into areas such as AI, data centers, energy infrastructure and Bitcoin mining.
Tether’s WDK raises the bar amid competition
Tether competitors like Circle, PayPal, and Stripe also currently provide developer tools and APIs for stablecoin payments, smart contract interaction, and cross-chain transactions. However, their offerings do not offer complete treasury wallet kits.
Tether’s next WDK stands out for its more complete nature. Analysts say the launch this week could prompt competitors to announce similar wallet-focused products in the near future.
Tether first introduced WDK in late 2024 as part of its efforts to support wallet interoperability between devices. The roadmap now includes future features like Lightning Network payments and possibly a peer-to-peer sync system for greater decentralization.
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A crypto journalist with over 5 years of industry experience, Parth has worked with leading media outlets in the crypto and finance world, gaining experience and expertise in the field after surviving both bear and bull markets over the years. Parth is also the author of 4 self-published books.
