README

Last updated 8 days ago

README

Wallet Development Kit (WDK)

Tether’s open-source Wallet Development Kit (WDK) empowers developers to build secure, non-custodial wallets with unified blockchain access, stateless architecture, and complete user control. WDK simplifies the complexity of blockchain infrastructure without compromising on flexibility or security.

What is WDK?

WDK is a developer-first framework to create cross-chain wallets that are secure, extensible, and production-ready. It provides a single, stateless API to interact with Ethereum, Bitcoin, TON, and Spark (Lightning Network)—abstracting blockchain-specific complexity while keeping developers in full control of keys and data.

🔑 Key Features

Multi-Blockchain Support: Ethereum, Polygon, Arbitrum, Bitcoin, TON, Spark
Unified API Layer: A single interface across chains
Account Abstraction: Enable gasless transactions & custom fee logic on EVM & TON
Stateless & Secure: No secrets or data are stored by WDK
Non-Custodial by Design: You manage keys; WDK never sees them
DeFi Ready: Built-in support for swaps, token transfers, and cross-chain actions
Modular & Extensible: Add your own chains, tokens, or business logic

👤 Who is WDK for?

Developers & Builders

Create mobile/web wallets in minutes using a familiar JS/TS interface
Integrate advanced features like account abstraction without reinventing the wheel

Startups & Enterprises

Launch wallet products with full ownership of UX, logic, and keys
Customize flows like tipping, swapping, buying/selling, and more

Educators & Innovators

Use WDK to prototype, test, and teach wallet development across major blockchains

🔍 How It Works

WDK is stateless: it processes requests but stores nothing. All sensitive data (keys, sessions, configs) stays in your hands.


[Your App] → [WDK API] → [Ethereum | Bitcoin | TON | Spark]

This guarantees:

No custodial risk
Full user control
Flexibility to scale or pivot

🛠️ Use Cases

Build wallets for creators, communities, or DAOs
Integrate wallet functions into DeFi, payments, gaming, or tipping apps
Develop cross-platform wallet experiences (React Native, Electron, Web)

🌍 Supported Blockchains

WDK supports a growing set of blockchains. This list is continuously expanding, with more integrations coming soon. Chains marked with ⏳ are in active development.

Chain

Type

Supported

Description

Ethereum

EVM

✅

Leading smart contract platform, supports ERC-20 tokens and DeFi.

Arbitrum

L2 / EVM

✅

Layer 2 scaling solution for Ethereum, fast and cost-effective.

Polygon

L2 / EVM

✅

Scalable, low-fee EVM chain, ideal for dApps and DeFi.

Bitcoin

Native

✅

The original cryptocurrency, secure and widely adopted.

TON

Non-EVM

✅

High-performance blockchain for decentralized apps and payments.

Spark

✅

Fast, low-fee Bitcoin payments via Lightning Network.

Solana

Non-EVM

⏳

Ultra-fast, low-fee chain for DeFi and NFTs with a unique parallel runtime.

TRON

Non-EVM

⏳

High-throughput blockchain optimized for stablecoin transfers and payments.

🔐 Completely non custodial

WDK never stores or transmits secrets. Developers are responsible for key storage using secure techniques like OS keychain, HSMs, or hardware wallets. All operations are performed in-memory.

📬 Contact us to get started!

WDK is currently in private beta. If you're building wallet products, protocols, or integrations and want early access:

👉 Please fill out this form 👈

We’re especially excited to collaborate with:

Layer 1/2 chains looking for wallet integrations
Fintech and crypto startups building novel user experiences

🌐 Open Source Vision

We are committed to making WDK fully open-source in 2025. Join us now to shape its roadmap and be part of a growing ecosystem of developers creating the next generation of crypto wallets.

Last updated 8 days ago

Wallet Development Kit (WDK)

What is WDK?

🔑 Key Features

Multi-Blockchain Support: Ethereum, Polygon, Arbitrum, Bitcoin, TON, Spark
Unified API Layer: A single interface across chains
Account Abstraction: Enable gasless transactions & custom fee logic on EVM & TON
Stateless & Secure: No secrets or data are stored by WDK
Non-Custodial by Design: You manage keys; WDK never sees them
DeFi Ready: Built-in support for swaps, token transfers, and cross-chain actions
Modular & Extensible: Add your own chains, tokens, or business logic

👤 Who is WDK for?

Developers & Builders

Create mobile/web wallets in minutes using a familiar JS/TS interface
Integrate advanced features like account abstraction without reinventing the wheel

Startups & Enterprises

Launch wallet products with full ownership of UX, logic, and keys
Customize flows like tipping, swapping, buying/selling, and more

Educators & Innovators

Use WDK to prototype, test, and teach wallet development across major blockchains

🔍 How It Works

WDK is stateless: it processes requests but stores nothing. All sensitive data (keys, sessions, configs) stays in your hands.


[Your App] → [WDK API] → [Ethereum | Bitcoin | TON | Spark]

This guarantees:

No custodial risk
Full user control
Flexibility to scale or pivot

🛠️ Use Cases

Build wallets for creators, communities, or DAOs
Integrate wallet functions into DeFi, payments, gaming, or tipping apps
Develop cross-platform wallet experiences (React Native, Electron, Web)

🌍 Supported Blockchains

WDK supports a growing set of blockchains. This list is continuously expanding, with more integrations coming soon. Chains marked with ⏳ are in active development.

Chain

Type

Supported

Description

Ethereum

EVM

✅

Leading smart contract platform, supports ERC-20 tokens and DeFi.

Arbitrum

L2 / EVM

✅

Layer 2 scaling solution for Ethereum, fast and cost-effective.

Polygon

L2 / EVM

✅

Scalable, low-fee EVM chain, ideal for dApps and DeFi.

Bitcoin

Native

✅

The original cryptocurrency, secure and widely adopted.

TON

Non-EVM

✅

High-performance blockchain for decentralized apps and payments.

Spark

✅

Fast, low-fee Bitcoin payments via Lightning Network.

Solana

Non-EVM

⏳

Ultra-fast, low-fee chain for DeFi and NFTs with a unique parallel runtime.

TRON

Non-EVM

⏳

High-throughput blockchain optimized for stablecoin transfers and payments.

🔐 Completely non custodial

WDK never stores or transmits secrets. Developers are responsible for key storage using secure techniques like OS keychain, HSMs, or hardware wallets. All operations are performed in-memory.

📬 Contact us to get started!

WDK is currently in private beta. If you're building wallet products, protocols, or integrations and want early access:

👉 Please fill out this form 👈

We’re especially excited to collaborate with:

Layer 1/2 chains looking for wallet integrations
Fintech and crypto startups building novel user experiences

🌐 Open Source Vision

We are committed to making WDK fully open-source in 2025. Join us now to shape its roadmap and be part of a growing ecosystem of developers creating the next generation of crypto wallets.