Vexanium Toolchain

Vexanium platform provides a number of components and libraries which are used to operate blockchain nodes, collect blockchain data, to interact with these nodes, and to build smart contracts.

The VEXANIUM blockchain is made up of the following components and toolchain.

  1. nodeos: the core VEXANIUM (VexChain) node daemon that can be configured with plugins to run a node. Example uses are block production, dedicated API endpoints, and local development.

  2. cleos or clivex: (CLI + VEX = clivex), the command line interface to interact with the blockchain and to manage wallets.

  3. keosd: the component that securely stores VEX keys in wallets.

  4. VEX.CDT: the Contract Development Toolkit is a C/C++ toolchain targeting WebAssembly (WASM) and a set of tools to facilitate development of smart contracts written in C/C++ that are meant to be deployed to the VEXANIUM blockchain.

The basic relationship between these components is illustrated in the following diagram.


VEXANIUM also provides a library for javascript development called vexaniumjs together with Swift and Java SDK for developing mobile applications natively.

Node OS

nodeos is the core VEXANIUM node daemon. Nodeos handles the blockchain data persistence layer, peer-to-peer networking, and contract code scheduling. For development environments, nodeos enables you to set up a single node blockchain network. nodeos offers a wide range of features through plugins which can be enabled or disabled at start time via the command line parameters or configuration files.

You can read detailed documentation about nodeos at here.


cleos or clivex is a command line tool that interfaces with the REST APIs exposed by nodeos. You can also use one of them to deploy and test Vexanium smart contracts.


keosd is a key manager daemon for storing private keys and signing digital messages. keosd provides a secure key storage medium for keys to be encrypted in the associated wallet file. The keosd daemon also defines a secure enclave for signing transaction created by cleos or a third party library.


keosd can be accessed using the wallet API, but it is important to note that the intended usage is for local light client applications. keosd is not for cross network access by web applications trying to access user's wallets.

You can read detailed documentation about keosd at here.


VEX.CDT is a toolchain for WebAssembly (Wasm) and a set of tools to facilitate contract writing for the Vexanium blockchain. In addition to being a general-purpose WebAssembly toolchain, VEX-specific optimizations are available to support building VEXANIUM smart contracts. This new toolchain is built around Clang 7, which means that VEX.CDT has most of the current optimizations and analyses from LLVM.

You can read more about VEX.CDT at here.


A Javascript API SDK for integration with the VEXANIUM blockchain using the VEXANIUM RPC API.

What's Next?

Core Concepts: Learn about VEXANIUM's core concepts.

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