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Developers - Overview

This page serves as the landing destination for builders seeking to construct on the Multiversx platform.

Developer documentation

Get started with MultiversX by learning to write your first Smart Contract, build your first dApp or learn how to use our API.

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For interacting with MultiversX Blockchain via SDKs or Rest API, please refer to SDKs & Tools.

Table of contents

A list with everything that you can explore as a developer on MultiversX.

Tutorials

Below is a list of tutorials that one can you to get a full experience of building on MultiversX

NameDescription
Build your first dApp in 15 minutesVideo + written tutorial on how to create your first dApp.
Build a microservice for your dAppVideo + written tutorial on how to create your microservice.
Crowdfunding Smart ContractCrowdfunding tutorial (Part 1).
Crowdfunding Smart ContractCrowdfunding tutorial (Part 2).
The Counter Smart ContractThe Counter SC tutorial.
Custom Wallet ConnectCustom Wallet Connect tutorial.
Staking contract TutorialStep by step tutorial on how to create a Staking Smart Contract.

Signing transactions

The following content explain the structure of a transaction, how to sign or send them

NameDescription
Signing transactionsHow to serialize and sign transactions.
Tools for signingWhat to use in order to generate and sign transactions.
Signing programaticallyHow to sign transactions by using one of our SDKs.

Gas and fees

Learn about transaction's gas and how a fee is calculated

NameDescription
OverviewGeneral concepts and overview about gas cost, limit, price and fee.
For move-balance transfersHow fees are computed for move-balance transfers (EGLD transfers).
For System Smart ContractsHow fees are computed when interacting with system smart contracts.
For User defined Smart ContractsHow fees are computed when interacting with user defined smart contracts.

Smart Contract Developer reference

NameDescription
How to format the data field for Smart Contract callsLearn how a Smart Contract call looks like and how arguments should be encoded.
MultiversX serialization formatHow MultiversX smart contracts serialize arguments, results, and storage.
MultiversX SC annotationsHow to use annotations your contracts to make use of many built-in features from the framework.
MultiversX wasm modulesLearn how to divide a Smart Contract into multiples smaller components by using modules.
MultiversX wasm contract callsLearn how to call a Smart Contract from another Smart Contract.
Code metadataChoose the properties / eligible actions of your Smart Contract.
Upgrading smart contractsThe implications of upgrading a Smart Contract.
MultiversX wasm api functionsMake use of the MultiversX VM API functions to query relevant data from the blockchain.
Storage mappersDecide from multiple ways of storing data in your SC, by considering performance.
Rust testing frameworkTest your Smart Contract directly in Rust.
Rust testing framework functions referenceA list of available functions to be used when testing your Smart Contract in Rust.
Rust smart contract debuggingHow to debug your Smart Contract.
Rust smart contract build referenceHow to build and organize your Smart Contract.
Random numbers in smart contractsHow to generate random number in Smart Contracts.

Smart Contract Developers Best Practices

NameDescription
Best practices basicsHow to better structure your Smart Contract code.
Biguint operationsHandle Biguint operations in a more efficient way.
The dynamic allocation problemDescription of the dynamic allocation problem.
Multi valuesTake advantage of the variadic input and output.

Scenarios Reference

NameDescription
Scenario OverviewTest your Smart Contracts by using Scenario JSON tests.
Scenario StructureHow to structure a scenario.
Scenario Simple ValuesHandle simple values in scenario tests.
Scenario Complex ValuesHandle complex values in scenario tests.
Embedding Scenario code in GOHow to embed scenario code in Go.

Others

NameDescription
ConstantsA list of useful constants that governs the MultiversX Mainnet.
Built in functionsBuilt-in functions - protocol-side functions.
Account storageHow the data is stored under an account + how to query and change it.
Relayed/meta transactionsHow to prepare transactions whose fee is not paid by the user, but by a relayer.
Setup local testnetHow to set up a local testnet - basic solution
Setup local testnet advancedHow to set up a local testnet - advanced solution
Creating walletsExamples on creating wallets.
Reproducible buildsHow to perform reproducible contract builds.