Developers - Overview

Developer documentation

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

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

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

Name	Description
Build your first dApp in 15 minutes	Video + written tutorial on how to create your first dApp.
Build a microservice for your dApp	Video + written tutorial on how to create for your microservice.
Crowdfunding Smart Contract	Crowdfunding tutorial (Part 1).
Crowdfunding Smart Contract	Crowdfunding tutorial (Part 2).
The Counter Smart Contract	The Counter SC tutorial.
Custom Wallet Connect	Custom Wallet Connect tutorial.

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

Name	Description
Signing transactions	How to serialize and sign transactions.
Tools for signing	What to use in order to generate and sign transactions.
Signing programatically	How to sign transactions by using one of our SDKs.

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

Name	Description
Overview	General concepts and overview about gas cost, limit, price and fee.
For move-balance transfers	How fees are computed for move-balance transfers (EGLD transfers).
For System Smart Contracts	How fees are computed when interacting with system smart contracts.
For User defined Smart Contracts	How fees are computed when interacting with user defined smart contracts.

Name	Description
Elrond serialization format	How Elrond smart contracts serialize arguments, results, and storage.
Elrond wasm annotations	How to use annotations your contracts to make use of many built-in features from the framework.
Elrond wasm modules	Learn how to divide a Smart Contract into multiples smaller components by using modules.
Elrond wasm contract calls	Learn how to call a Smart Contract from another Smart Contract.
Smart contract developer best practices	Few tips on how to write clean and efficient contracts on Elrond.
Code metadata	Choose the properties / eligible actions of your Smart Contract.
Elrond wasm api functions	Make use of the Elrond VM API functions to query relevant data from the blockchain.
Storage mappers	Decide from multiple ways of storing data in your SC, by considering performance.
Rust testing framework	Test your Smart Contract directly in Rust.
Rust testing framework functions reference	A list of available functions to be used when testing your Smart Contract in Rust.
Rust smart contract debugging	How to debug your Smart Contract.
Random numbers in smart contracts	How to generate random number in Smart Contracts.

Name	Description
Best practices basics	How to better structure your Smart Contract code.
Biguint operations	Handle Biguint operations in a more efficient way.
The dynamic allocation problem	Description of the dynamic allocation problem.
Multi values	Take advantage of the variadic input and output.

Name	Description
Mandos Overview	Test your Smart Contracts by using JSON tests of Mandos.
Mandos Structure	How to structure a Mandos test.
Mandos Simple Values	Handle simple values in Mandos tests.
Mandos Complex Values	Handle complex values in Mandos tests.
Embedding Mandos code in GO	How to embed Mandos code in Go.

Name	Description
Constants	A list of useful constants that governs the Elrond Mainnet.
Built in functions	Built-in functions - protocol-side functions.
Account storage	How the data is stored under an account + how to query and change it.
Setup local testnet	How to set up a local testnet - basic solution
Setup local testnet advanced	How to set up a local testnet - advanced solution
Creating wallets	Examples on creating wallets.