Today, we are pleased to announce that the Message Bridge is now live on MainNet, expanding the interoperability capabilities available within the Neo ecosystem. The Message Bridge enables cross-chain communication between Neo X (EVM) and Neo N3, allowing applications on either network to exchange data, trigger contract logic on the opposite chain, and compose functionality across environments.

Neo X is developed by BaneLabs, a collaboration between Neo Global Development (NGD), NSPCC, and AxLabs. Together, they have been working to advance Neo’s infrastructure, including the recently introduced MEV resistance and the Token Bridge layer between Neo X and Neo N3.

A New Layer of Cross-Chain Capability

While the Token Bridge focuses on transferring assets, the Message Bridge introduces a broader mechanism: the ability to send arbitrary messages between chains. These messages may contain executable instructions or simply carry data to be stored, enabling contract calls, callbacks, relayed results, and store-only messages that do not require execution on the destination chain.

This flexibility positions the Message Bridge as a core building block for the next generation of applications in the Neo ecosystem. With this infrastructure now available, developers can:

• Access Neo N3’s built-in Oracles directly from Neo X, and potentially other EVM chains (a direction that could be expanded in the future).

• Fund and interact with NeoFS from EVM-based applications on Neo X without requiring users to operate directly on Neo N3.

• Build custom token bridges — fungible or non-fungible — on top of the messaging layer.

• Implement advanced cross-chain flows such as swaps, asynchronous requests, and multi-step interactions.

In practice, this means Neo X developers can take advantage of capabilities not available in standard EVM environments but natively present on Neo N3.

Developer Tools and Examples Available Today

Alongside the MainNet deployment of the Message Bridge smart contracts:

• bridge-evm-contracts

• bridge-neo-contracts

We are releasing two key repositories to support developers:

• bridge-sdk-ts
  A TypeScript SDK designed for frontend and backend environments, offering a streamlined interface for interacting with the Message Bridge.

• bridge-examples-ts
  A set of TypeScript examples demonstrating how to send messages, execute them on the opposite chain, and handle returned results.

For further architectural details and integration guidance, developers can refer to the Message Bridge section of the Neo X documentation.

Together, these tools and resources make it straightforward for teams to begin experimenting with the Message Bridge and build new cross-chain applications across Neo X and Neo N3.

Another Step Toward a More Connected Neo Ecosystem

The launch of the Message Bridge expands the interoperability layer of Neo and reinforces the broader goal of enabling richer, more capable applications across Neo X and Neo N3.

As with any bridge infrastructure, safety, reliability, and monitoring remain ongoing priorities. The team will continue improving the system as usage grows.

We look forward to seeing how the community builds on this new capability — from leveraging Neo’s Oracles and NeoFS to designing entirely new classes of cross-chain dApps.