- Tether’s WDK will include a starter wallet for iOS and Android.
- The toolkit supports humans, AI agents and autonomous systems.
- WDK is open-source, modular and designed for wide adoption.
Paolo Ardoino, CEO of Tether, confirmed that the stablecoin issuer will release a fully open-source Wallet Development Kit (WDK) this week.
The launch will include a compact “starter wallet” for both iOS and Android, serving as a practical example of how developers can quickly build complete digital-asset wallets using the toolkit.
Tether Wallet Development Kit (WDK)
The WDK represents Tether’s latest step toward improving non-custodial financial tools.
According to Ardoino, the kit is designed to help developers and businesses integrate secure, self-custody wallets into their applications with minimal effort.
It features a modular, highly scalable architecture intended for easy adoption across multiple platforms and use cases.
In demonstrations shared by Ardoino, the Starter Wallet already provides a full feature set including multiple mnemonic backup options, peer-to-peer functionality, and decentralized finance (DeFi) tools such as lending, swaps and asset management.
Tether describes the WDK as “supermodular” and “battle-tested,” emphasizing security, flexibility and interoperability.
By releasing the kit as open source, Tether invites the global developer community to audit, contribute to and expand its capabilities.
One notable aspect of this development is that WDK is not built exclusively for human users.
Tether designed the toolkit to support machine interactions, including those by AI agents and robots.
This aligns with the broader aim of enabling autonomous digital systems that can securely manage and transfer value without human intervention.
Ardoino noted the WDK architecture is intended to withstand complex real-world scenarios and scale across all blockchains supported by Tether’s stablecoins.
The timing of Ardoino’s announcement follows Tether’s WDK showcase at the Lugano Plan ₿ event, where he highlighted the kit’s peer-to-peer structure and privacy-preserving features.
Tether has long emphasized the importance of non-custodial models, positioning them as key to financial inclusion and data sovereignty.
Tether’s AI division is also developing related tools, including AI Translate, a voice assistant, and a Bitcoin Wallet Assistant powered by artificial intelligence that enables users—or even AI agents—to interact with wallets via natural-language commands.
Ardoino’s announcement described an ambitious vision: the WDK could enable “trillions of self-custody wallets.”
While that figure is optimistic, it underscores Tether’s goal of broad adoption and integration across industries and devices.
The initiative aims to make it easier for businesses, developers and individuals to deploy secure digital wallets, potentially expanding financial access in emerging markets where self-custody and stablecoins are playing an increasing role.
Tether’s Financial Strength
The WDK launch coincides with a period of notable financial strength for Tether.
The company recently reported approximately $4.9 billion in profit for Q2 2025, bringing its total profit for the first half of the year to about $5.7 billion.
It also disclosed holdings of more than $127 billion in U.S. Treasury bills, cementing its position among the largest holders of U.S. government debt.
Meanwhile, Tether’s flagship stablecoin, USDT, reached an all-time market capitalization high of $180.32 billion after another $1 billion issuance in October.
The combination of financial scale and product innovation suggests Tether is deepening its influence not only as a stablecoin issuer but also as a major infrastructure provider for digital finance.
By releasing WDK as open source, Tether signals confidence in its technology and a commitment to transparency—betting that the future of finance will rest on privacy, autonomy and interoperability.
Once the open-source release is available, attention will turn to the developer community’s response and the first wave of projects built on WDK.
If successful, the initiative could mark a significant milestone in Tether’s broader mission to make finance accessible to people and machines alike—and potentially shape how value moves in the next era of digital economies.