# MultiversX Docs

> A highly scalable, fast and secure blockchain platform for distributed apps, enterprise use cases and the new internet economy.
MultiversX is a highly scalable, fast and secure blockchain platform. This documentation covers architecture, smart contracts, SDKs, APIs, wallets, validators, and the broader ecosystem.
This documentation is organized into major sections. Each section includes tutorials, examples, and detailed technical references.

## Welcome to MultiversX
- [Welcome to MultiversX](https://docs.multiversx.com/welcome/welcome-to-multiversx): Learn about welcome to multiversx in MultiversX.

## Learn about MultiversX
- [AI agents](https://docs.multiversx.com/learn/ai-agents): Learn how to use AI agents for your MultiversX projects
- [Architecture Overview](https://docs.multiversx.com/learn/architecture-overview): Overview of architecture in MultiversX.
- [Chronology](https://docs.multiversx.com/learn/chronology): Time structure in MultiversX: rounds, epochs and how they govern block production and finality.
- [Consensus](https://docs.multiversx.com/learn/consensus): Secure Proof‑of‑Stake (SPoS) in MultiversX: validator selection, randomness, BLS aggregation and single‑block finality.
- [Economics](https://docs.multiversx.com/learn/economics): Economics of MultiversX: token supply, fees, rewards, inflation and distribution mechanics.
- [Entities](https://docs.multiversx.com/learn/entities): Core entities in MultiversX: users, accounts, nodes and how they interact on‑chain.
- [Getting Started](https://docs.multiversx.com/learn/getting-started): Overview of getting started in MultiversX.
- [MultiversX Virtual Machine (SpaceVM)](https://docs.multiversx.com/learn/space-vm): The MultiversX Virtual Machine (SpaceVM): WASM execution, Rust framework support and performance characteristics.
- [Sharding](https://docs.multiversx.com/learn/sharding): Overview of sharding in MultiversX.
- [Transactions](https://docs.multiversx.com/learn/transactions): Overview of transactions in MultiversX.
- [What is EGLD?](https://docs.multiversx.com/learn/EGLD): Overview of egld in MultiversX.
- [What is MultiversX?](https://docs.multiversx.com/learn/multiversx-ecosystem): What MultiversX is and how the ecosystem fits together: networks, apps, tooling and core concepts.

## Developers
- [ABI](https://docs.multiversx.com/developers/data/abi): Learn about abi in MultiversX.
- [Account storage](https://docs.multiversx.com/developers/account-storage): Learn about account storage in MultiversX.
- [accounts](https://docs.multiversx.com/sdk-and-tools/indices/accounts): Overview of MultiversX SDK and Tools accounts.
- [accountsesdt](https://docs.multiversx.com/sdk-and-tools/indices/accountsesdt): Overview of MultiversX SDK and Tools accountsesdt.
- [accountsesdthistory](https://docs.multiversx.com/sdk-and-tools/indices/accountsesdthistory): Overview of MultiversX SDK and Tools accountsesdthistory.
- [accountshistory](https://docs.multiversx.com/sdk-and-tools/indices/accountshistory): Overview of MultiversX SDK and Tools accountshistory.
- [Basics](https://docs.multiversx.com/developers/best-practices/best-practices-basics): Learn about basics in MultiversX.
- [BigUint Operations](https://docs.multiversx.com/developers/best-practices/biguint-operations): Learn about biguint operations in MultiversX.
- [Blackbox calls](https://docs.multiversx.com/developers/testing/rust/sc-blackbox-calls): Learn about blackbox calls in MultiversX.
- [Blackbox example](https://docs.multiversx.com/developers/testing/rust/sc-blackbox-example): Learn about blackbox example in MultiversX.
- [blocks](https://docs.multiversx.com/sdk-and-tools/indices/blocks): Overview of MultiversX SDK and Tools blocks.
- [Build a dApp in 15 minutes](https://docs.multiversx.com/developers/tutorials/your-first-dapp): Tutorial: Build a dApp in 15 minutes
- [Build a Microservice for your dApp](https://docs.multiversx.com/developers/tutorials/your-first-microservice): Tutorial: Build a Microservice for your dApp
- [Build Reference](https://docs.multiversx.com/developers/meta/sc-build-reference): Learn about build reference in MultiversX.
- [Built-In Functions](https://docs.multiversx.com/developers/built-in-functions): Learn about built-in functions in MultiversX.
- [C++ SDK](https://docs.multiversx.com/sdk-and-tools/erdcpp): Overview of MultiversX SDK and Tools c++ sdk.
- [Chain simulator](https://docs.multiversx.com/sdk-and-tools/chain-simulator): Overview of MultiversX SDK and Tools chain simulator.
- [Chain Simulator in Adder - SpaceCraft interactors](https://docs.multiversx.com/developers/tutorials/chain-simulator-adder): Tutorial: Chain Simulator in Adder - SpaceCraft interactors
- [CLI](https://docs.multiversx.com/developers/meta/sc-meta-cli): Learn about cli in MultiversX.
- [Code Metadata](https://docs.multiversx.com/developers/data/code-metadata): Learn about code metadata in MultiversX.
- [Composite Values](https://docs.multiversx.com/developers/data/composite-values): Learn about composite values in MultiversX.
- [Concept](https://docs.multiversx.com/developers/testing/scenario/concept): Learn about concept in MultiversX.
- [Configuration](https://docs.multiversx.com/developers/meta/sc-config): Learn about configuration in MultiversX.
- [Constants](https://docs.multiversx.com/developers/constants): Learn about constants in MultiversX.
- [Cookbook (v14)](https://docs.multiversx.com/sdk-and-tools/sdk-js/sdk-js-cookbook-v14): Overview of MultiversX SDK and Tools cookbook (v14).
- [Cookbook (v15)](https://docs.multiversx.com/sdk-and-tools/sdk-js/sdk-js-cookbook-v15): Overview of MultiversX SDK and Tools cookbook (v15).
- [Core Logic](https://docs.multiversx.com/developers/tutorials/crowdfunding/crowdfunding-p2): Tutorial: Core Logic
- [Creating Wallets](https://docs.multiversx.com/developers/creating-wallets): Learn about creating wallets in MultiversX.
- [Custom Types](https://docs.multiversx.com/developers/data/custom-types): Learn about custom types in MultiversX.
- [Defaults](https://docs.multiversx.com/developers/data/defaults): Learn about defaults in MultiversX.
- [delegators](https://docs.multiversx.com/sdk-and-tools/indices/delegators): Overview of MultiversX SDK and Tools delegators.
- [Deploy a SC in 5 minutes - SpaceCraft interactors](https://docs.multiversx.com/developers/tutorials/interactors-guide): Tutorial: Deploy a SC in 5 minutes - SpaceCraft interactors
- [Devcontainers](https://docs.multiversx.com/sdk-and-tools/devcontainers): Overview of MultiversX SDK and Tools devcontainers.
- [Developers - Overview](https://docs.multiversx.com/developers/overview): Learn about developers - in MultiversX.
- [DEX Walkthrough](https://docs.multiversx.com/developers/tutorials/dex-walkthrough): Tutorial: DEX Walkthrough
- [EGLD transfers (move balance transactions)](https://docs.multiversx.com/developers/gas-and-fees/egld-transfers): Learn about egld transfers (move balance transactions) in MultiversX.
- [Elasticindexer service](https://docs.multiversx.com/sdk-and-tools/elastic-indexer): Overview of MultiversX SDK and Tools elasticindexer service.
- [Elasticsearch](https://docs.multiversx.com/sdk-and-tools/elastic-search): Overview of MultiversX SDK and Tools elasticsearch.
- [Energy DAO SC tutorial](https://docs.multiversx.com/developers/tutorials/energy-dao): Tutorial: Energy DAO SC tutorial
- [Environments](https://docs.multiversx.com/developers/transactions/tx-env): Learn about environments in MultiversX.
- [epochinfo](https://docs.multiversx.com/sdk-and-tools/indices/epochinfo): Overview of MultiversX SDK and Tools epochinfo.
- [ESDT Operations Events](https://docs.multiversx.com/developers/event-logs/esdt-events): Learn about esdt operations events in MultiversX.
- [Ethereum to MultiversX migration guide](https://docs.multiversx.com/developers/tutorials/eth-to-mvx): Tutorial: Ethereum to MultiversX migration guide
- [events](https://docs.multiversx.com/sdk-and-tools/indices/events): Overview of MultiversX SDK and Tools events.
- [Events notifier](https://docs.multiversx.com/sdk-and-tools/notifier): Overview of MultiversX SDK and Tools events notifier.
- [Execution Events](https://docs.multiversx.com/developers/event-logs/execution-events): Learn about execution events in MultiversX.
- [Extend to Any Token](https://docs.multiversx.com/developers/tutorials/crowdfunding/crowdfunding-p3): Tutorial: Extend to Any Token
- [Extending sdk-js](https://docs.multiversx.com/sdk-and-tools/sdk-js/extending-sdk-js): Overview of MultiversX SDK and Tools extending sdk-js.
- [Final Code](https://docs.multiversx.com/developers/tutorials/crowdfunding/final-code): Tutorial: Final Code
- [Fix IDEs configuration](https://docs.multiversx.com/sdk-and-tools/troubleshooting/ide-setup): Overview of MultiversX SDK and Tools fix ides configuration.
- [Fix Rust installation](https://docs.multiversx.com/sdk-and-tools/troubleshooting/rust-setup): Overview of MultiversX SDK and Tools fix rust installation.
- [Fungible tokens](https://docs.multiversx.com/tokens/fungible-tokens): ESDT fungible tokens: issuance, configuration properties, permissions, and on‑chain usage.
- [Gas](https://docs.multiversx.com/developers/transactions/tx-gas): Learn about gas in MultiversX.
- [Gateway overview](https://docs.multiversx.com/sdk-and-tools/rest-api/gateway-overview): Overview of MultiversX SDK and Tools gateway.
- [Generating scenarios](https://docs.multiversx.com/developers/testing/scenario/generating-scenarios): Learn about generating scenarios in MultiversX.
- [Go SDK](https://docs.multiversx.com/sdk-and-tools/sdk-go): Overview of MultiversX SDK and Tools go sdk.
- [Google BigQuery](https://docs.multiversx.com/sdk-and-tools/google-bigquery): Overview of MultiversX SDK and Tools google bigquery.
- [Guard accounts](https://docs.multiversx.com/developers/guard-accounts): Learn about guard accounts in MultiversX.
- [Guardians](https://docs.multiversx.com/sdk-and-tools/sdk-dapp/internal-processes/guardians): Overview of MultiversX SDK and Tools guardians.
- [How to fix Elasticsearch mapping errors](https://docs.multiversx.com/sdk-and-tools/elastic-search-wrong-mappings-fix): Overview of MultiversX SDK and Tools how to fix elasticsearch mapping errors.
- [Installing mxpy](https://docs.multiversx.com/sdk-and-tools/mxpy/installing-mxpy): Overview of MultiversX SDK and Tools installing mxpy.
- [Interactors Example](https://docs.multiversx.com/developers/meta/interactor/interactors-example): Learn about interactors example in MultiversX.
- [Interactors Overview](https://docs.multiversx.com/developers/meta/interactor/interactors-overview): Learn about interactors in MultiversX.
- [Intro to ESDT](https://docs.multiversx.com/tokens/intro): Introduction to ESDT token standards on MultiversX: fungible, non‑fungible and semi‑fungible basics.
- [Iterate keys](https://docs.multiversx.com/sdk-and-tools/rest-api/iterate-keys): Overview of MultiversX SDK and Tools iterate keys.
- [Java SDK](https://docs.multiversx.com/sdk-and-tools/mxjava): Overview of MultiversX SDK and Tools java sdk.
- [JSON Structure](https://docs.multiversx.com/developers/testing/scenario/structure-json): Learn about json structure in MultiversX.
- [Kotlin SDK](https://docs.multiversx.com/sdk-and-tools/erdkotlin): Overview of MultiversX SDK and Tools kotlin sdk.
- [Legacy SC calls](https://docs.multiversx.com/developers/transactions/tx-legacy-calls): Learn about legacy sc calls in MultiversX.
- [logs](https://docs.multiversx.com/sdk-and-tools/indices/logs): Overview of MultiversX SDK and Tools logs.
- [Managed Decimal](https://docs.multiversx.com/developers/best-practices/managed-decimal): Learn about managed decimal in MultiversX.
- [Memory allocation](https://docs.multiversx.com/developers/meta/sc-allocator): Learn about memory allocation in MultiversX.
- [Messages](https://docs.multiversx.com/developers/developer-reference/sc-messages): Learn about messages in MultiversX.
- [Migration](https://docs.multiversx.com/developers/transactions/tx-migration): Learn about migration in MultiversX.
- [miniblocks](https://docs.multiversx.com/sdk-and-tools/indices/miniblocks): Overview of MultiversX SDK and Tools miniblocks.
- [Multi-Values](https://docs.multiversx.com/developers/data/multi-values): Learn about multi-values in MultiversX.
- [MultiversX API](https://docs.multiversx.com/sdk-and-tools/rest-api/multiversx-api): Overview of MultiversX SDK and Tools multiversx api.
- [MultiversX API WebSocket](https://docs.multiversx.com/sdk-and-tools/rest-api/ws-subscriptions): Overview of MultiversX SDK and Tools multiversx api websocket.
- [MultiversX Smart Contracts](https://docs.multiversx.com/developers/smart-contracts): Learn about multiversx smart contracts in MultiversX.
- [MultiversX Smart Contracts API limits](https://docs.multiversx.com/developers/contract-api-limits): Learn about multiversx smart contracts api limits in MultiversX.
- [MultiversX tools on multiple platforms](https://docs.multiversx.com/sdk-and-tools/troubleshooting/multiplatform): Overview of MultiversX SDK and Tools multiversx tools on multiple platforms.
- [mxpy CLI cookbook](https://docs.multiversx.com/sdk-and-tools/mxpy/mxpy-cli): Overview of MultiversX SDK and Tools mxpy cli cookbook.
- [NestJS SDK](https://docs.multiversx.com/sdk-and-tools/sdk-nestjs/sdk-nestjs): Overview of MultiversX SDK and Tools nestjs sdk.
- [NestJS SDK Auth utilities](https://docs.multiversx.com/sdk-and-tools/sdk-nestjs/sdk-nestjs-auth): Overview of MultiversX SDK and Tools nestjs sdk auth utilities.
- [NestJS SDK Cache utilities](https://docs.multiversx.com/sdk-and-tools/sdk-nestjs/sdk-nestjs-cache): Overview of MultiversX SDK and Tools nestjs sdk cache utilities.
- [NestJS SDK Monitoring utilities](https://docs.multiversx.com/sdk-and-tools/sdk-nestjs/sdk-nestjs-monitoring): Overview of MultiversX SDK and Tools nestjs sdk monitoring utilities.
- [NFT & SFT tokens](https://docs.multiversx.com/tokens/nft-tokens): NFTs and SFTs on MultiversX: issuance, roles, properties, transfer mechanics and branding best practices.
- [operations](https://docs.multiversx.com/sdk-and-tools/indices/operations): Overview of MultiversX SDK and Tools operations.
- [Overview](https://docs.multiversx.com/developers/testing/rust/sc-test-overview): Learn about sc test overview in MultiversX.
- [Overview](https://docs.multiversx.com/sdk-and-tools/troubleshooting/troubleshooting): Overview of MultiversX SDK and Tools troubleshooting.
- [Overview](https://docs.multiversx.com/developers/gas-and-fees/overview): Learn about overview in MultiversX.
- [Payload (data)](https://docs.multiversx.com/developers/transactions/tx-data): Learn about payload (data) in MultiversX.
- [Payments](https://docs.multiversx.com/developers/transactions/tx-payment): Learn about payments in MultiversX.
- [Preparing SCs for Supernova](https://docs.multiversx.com/developers/best-practices/prepare-sc-supernova): Learn about preparing scs for supernova in MultiversX.
- [Proxies](https://docs.multiversx.com/developers/transactions/tx-proxies): Learn about proxies in MultiversX.
- [Proxy architecture](https://docs.multiversx.com/sdk-and-tools/proxy): Overview of MultiversX SDK and Tools proxy architecture.
- [Python SDK](https://docs.multiversx.com/sdk-and-tools/sdk-py): Overview of MultiversX SDK and Tools python sdk.
- [Random Numbers in Smart Contracts](https://docs.multiversx.com/developers/developer-reference/sc-random-numbers): Learn about random numbers in smart contracts in MultiversX.
- [rating](https://docs.multiversx.com/sdk-and-tools/indices/rating): Overview of MultiversX SDK and Tools rating.
- [React Development](https://docs.multiversx.com/developers/guidelines/react-development): Learn about react development in MultiversX.
- [receipts](https://docs.multiversx.com/sdk-and-tools/indices/receipts): Overview of MultiversX SDK and Tools receipts.
- [Receiver](https://docs.multiversx.com/developers/transactions/tx-to): Learn about receiver in MultiversX.
- [Relayed Transactions](https://docs.multiversx.com/developers/relayed-transactions): Learn about relayed transactions in MultiversX.
- [Reproducible Builds](https://docs.multiversx.com/developers/reproducible-contract-builds): Learn about reproducible builds in MultiversX.
- [Rest API Addresses](https://docs.multiversx.com/sdk-and-tools/rest-api/addresses): Overview of MultiversX SDK and Tools addresses.
- [Rest API Blocks](https://docs.multiversx.com/sdk-and-tools/rest-api/blocks): Overview of MultiversX SDK and Tools blocks.
- [Rest API Network](https://docs.multiversx.com/sdk-and-tools/rest-api/network): Overview of MultiversX SDK and Tools network.
- [Rest API Nodes](https://docs.multiversx.com/sdk-and-tools/rest-api/nodes): Overview of MultiversX SDK and Tools nodes.
- [REST API overview](https://docs.multiversx.com/sdk-and-tools/rest-api/rest-api): Overview of MultiversX SDK and Tools rest api.
- [Rest API Transactions](https://docs.multiversx.com/sdk-and-tools/rest-api/transactions): Overview of MultiversX SDK and Tools transactions.
- [Rest API Virtual Machine](https://docs.multiversx.com/sdk-and-tools/rest-api/virtual-machine): Overview of MultiversX SDK and Tools virtual machine.
- [Result Handlers](https://docs.multiversx.com/developers/transactions/tx-result-handlers): Learn about result handlers in MultiversX.
- [rounds](https://docs.multiversx.com/sdk-and-tools/indices/rounds): Overview of MultiversX SDK and Tools rounds.
- [Run transactions](https://docs.multiversx.com/developers/transactions/tx-run): Learn about run transactions in MultiversX.
- [Running scenarios](https://docs.multiversx.com/developers/testing/scenario/running-scenarios): Learn about running scenarios in MultiversX.
- [Rust SDK](https://docs.multiversx.com/sdk-and-tools/sdk-rust): Overview of MultiversX SDK and Tools rust sdk.
- [Rust Version](https://docs.multiversx.com/developers/meta/rust-version): Learn about rust version in MultiversX.
- [SC to SC Calls](https://docs.multiversx.com/developers/developer-reference/sc-to-sc-calls): Learn about sc to sc calls in MultiversX.
- [scdeploys](https://docs.multiversx.com/sdk-and-tools/indices/scdeploys): Overview of MultiversX SDK and Tools scdeploys.
- [Scenario Complex Values](https://docs.multiversx.com/developers/testing/scenario/values-complex): Learn about scenario complex values in MultiversX.
- [Scenario Simple Values](https://docs.multiversx.com/developers/testing/scenario/values-simple): Learn about scenario simple values in MultiversX.
- [scresults](https://docs.multiversx.com/sdk-and-tools/indices/scresults): Overview of MultiversX SDK and Tools scresults.
- [sdk-dapp](https://docs.multiversx.com/sdk-and-tools/sdk-dapp/sdk-dapp): Overview of MultiversX SDK and Tools sdk-dapp.
- [sdk-js](https://docs.multiversx.com/sdk-and-tools/sdk-js/sdk-js): Overview of MultiversX SDK and Tools sdk-js.
- [SDKs and Tools - Overview](https://docs.multiversx.com/sdk-and-tools/overview): Overview of MultiversX SDK and Tools sdks and tools -.
- [Sender](https://docs.multiversx.com/developers/transactions/tx-from): Learn about sender in MultiversX.
- [Set up a Localnet (mxpy)](https://docs.multiversx.com/developers/setup-local-testnet): Learn about set up a localnet (mxpy) in MultiversX.
- [Set up a Localnet (raw)](https://docs.multiversx.com/developers/setup-local-testnet-advanced): Learn about set up a localnet (raw) in MultiversX.
- [Setup & Basics](https://docs.multiversx.com/developers/tutorials/crowdfunding/crowdfunding-p1): Tutorial: Setup & Basics
- [Signing programmatically](https://docs.multiversx.com/developers/signing-transactions/signing-programmatically): Learn about signing programmatically in MultiversX.
- [Signing Providers for dApps](https://docs.multiversx.com/sdk-and-tools/sdk-js/sdk-js-signing-providers): Overview of MultiversX SDK and Tools signing providers for dapps.
- [Signing Transactions](https://docs.multiversx.com/developers/signing-transactions/signing-transactions): Learn about signing transactions in MultiversX.
- [Simple Values](https://docs.multiversx.com/developers/data/simple-values): Learn about simple values in MultiversX.
- [Smart contract annotations](https://docs.multiversx.com/developers/developer-reference/sc-annotations): Learn about smart contract annotations in MultiversX.
- [Smart Contract API Functions](https://docs.multiversx.com/developers/developer-reference/sc-api-functions): Learn about smart contract api functions in MultiversX.
- [Smart Contract Call Events](https://docs.multiversx.com/developers/event-logs/contract-call-events): Learn about smart contract call events in MultiversX.
- [Smart Contract Calls Data Format](https://docs.multiversx.com/developers/sc-calls-format): Learn about smart contract calls data format in MultiversX.
- [Smart Contract Debugging](https://docs.multiversx.com/developers/testing/sc-debugging): Learn about smart contract debugging in MultiversX.
- [Smart Contract Deploy Events](https://docs.multiversx.com/developers/event-logs/contract-deploy-events): Learn about smart contract deploy events in MultiversX.
- [Smart contract interactions](https://docs.multiversx.com/sdk-and-tools/mxpy/smart-contract-interactions): Overview of MultiversX SDK and Tools smart contract interactions.
- [Smart contract modules](https://docs.multiversx.com/developers/developer-reference/sc-modules): Learn about smart contract modules in MultiversX.
- [Smart contract payments](https://docs.multiversx.com/developers/developer-reference/sc-payments): Learn about smart contract payments in MultiversX.
- [Staking smart contract](https://docs.multiversx.com/developers/tutorials/staking-contract): Tutorial: Staking smart contract
- [Storage Mappers](https://docs.multiversx.com/developers/developer-reference/storage-mappers): Learn about storage mappers in MultiversX.
- [System Delegation Events](https://docs.multiversx.com/developers/event-logs/system-delegation-events): Learn about system delegation events in MultiversX.
- [System Smart Contracts](https://docs.multiversx.com/developers/gas-and-fees/system-smart-contracts): Learn about system smart contracts in MultiversX.
- [tags](https://docs.multiversx.com/sdk-and-tools/indices/tags): Overview of MultiversX SDK and Tools tags.
- [Test setup](https://docs.multiversx.com/developers/testing/rust/sc-test-setup): Learn about test setup in MultiversX.
- [Testing in Go](https://docs.multiversx.com/developers/testing/testing-in-go): Learn about testing in go in MultiversX.
- [Testing Overview](https://docs.multiversx.com/developers/testing/testing-overview): Learn about testing in MultiversX.
- [The dynamic allocation problem](https://docs.multiversx.com/developers/best-practices/the-dynamic-allocation-problem): Learn about the dynamic allocation problem in MultiversX.
- [The MultiversX Serialization Format](https://docs.multiversx.com/developers/data/serialization-overview): Learn about the multiversx serialization format in MultiversX.
- [Time-related Types](https://docs.multiversx.com/developers/best-practices/time-types): Learn about time-related types in MultiversX.
- [tokens](https://docs.multiversx.com/sdk-and-tools/indices/tokens): Overview of MultiversX SDK and Tools tokens.
- [Toolchain Setup](https://docs.multiversx.com/developers/toolchain-setup): Learn about toolchain setup in MultiversX.
- [Tooling Overview](https://docs.multiversx.com/developers/meta/sc-meta): Learn about tooling in MultiversX.
- [Tools for signing](https://docs.multiversx.com/developers/signing-transactions/tools-for-signing): Learn about tools for signing in MultiversX.
- [Transaction Overview](https://docs.multiversx.com/developers/transactions/tx-overview): Learn about transaction in MultiversX.
- [transactions](https://docs.multiversx.com/sdk-and-tools/indices/transactions): Overview of MultiversX SDK and Tools transactions.
- [Upgrading smart contracts](https://docs.multiversx.com/developers/developer-reference/upgrading-smart-contracts): Learn about upgrading smart contracts in MultiversX.
- [User-defined Smart Contracts](https://docs.multiversx.com/developers/gas-and-fees/user-defined-smart-contracts): Learn about user-defined smart contracts in MultiversX.
- [validators](https://docs.multiversx.com/sdk-and-tools/indices/validators): Overview of MultiversX SDK and Tools validators.
- [Versions and Changelog](https://docs.multiversx.com/sdk-and-tools/rest-api/versions-and-changelog): Overview of MultiversX SDK and Tools versions and changelog.
- [WalletConnect 2.0 Migration](https://docs.multiversx.com/developers/tutorials/wallet-connect-v2-migration): Tutorial: WalletConnect 2.0 Migration
- [Whitebox Framework](https://docs.multiversx.com/developers/testing/rust/whitebox-legacy): Learn about whitebox framework in MultiversX.
- [Whitebox Functions Reference](https://docs.multiversx.com/developers/testing/rust/whitebox-legacy-functions-reference): Learn about whitebox functions reference in MultiversX.
- [Writing and testing interactions](https://docs.multiversx.com/sdk-and-tools/sdk-js/writing-and-running-sdk-js-snippets): Overview of MultiversX SDK and Tools writing and testing interactions.

## Validators
- [Convert An Existing Validator Into A Staking Provider](https://docs.multiversx.com/validators/staking/convert-existing-validator-into-staking-provider): Convert a validator into a staking provider under Staking Phase 3.5: deploy a delegation contract and migrate without losing validator slots.
- [FAQs](https://docs.multiversx.com/validators/faq): Frequently asked questions for validators and node operators: setup, operations, staking and troubleshooting.
- [How to use the Docker Image](https://docs.multiversx.com/validators/nodes-scripts/use-docker): Deploy and manage MultiversX nodes with Docker using the provided scripts and images.
- [Import DB](https://docs.multiversx.com/validators/import-db): Run a node in import‑db mode to rebuild state and reprocess historical blocks and transactions.
- [Installing a Validator Node](https://docs.multiversx.com/validators/nodes-scripts/install-update): Install and update validator nodes via the script menu: installation, upgrades and maintenance actions.
- [Manage a validator node](https://docs.multiversx.com/validators/nodes-scripts/manage-node): Manage validator nodes with scripts: start/stop, upgrades, database operations and routine maintenance.
- [Merging A Validator Into An Existing Delegation Smart Contract](https://docs.multiversx.com/validators/staking/merge-validator-delegation-sc): Merge a standalone validator into an existing delegation smart contract: whitelist, merge transaction and operational notes.
- [Multikey nodes management](https://docs.multiversx.com/validators/key-management/multikey-nodes): Manage multiple validator keys across node groups: architecture, setup and operational procedures.
- [MultiversX Node upgrades](https://docs.multiversx.com/validators/node-upgrades): Plan and execute MultiversX node upgrades safely: scheduling, compatibility considerations, and operational steps.
- [Node CLI](https://docs.multiversx.com/validators/node-cli): Node command‑line flags and utilities from mx‑chain‑go: startup options, configuration, debugging and maintenance.
- [Node Configuration](https://docs.multiversx.com/validators/node-configuration): Configure MultiversX validator nodes: key configuration files, what they control, safe parameters to adjust, and constraints tied to network consensus.
- [Node Databases](https://docs.multiversx.com/validators/node-databases): Overview of node databases: key‑value stores, what data they contain, and how they are used by the protocol.
- [Node operation modes](https://docs.multiversx.com/validators/operation-modes): Supported node operation modes and configuration patterns for observers, validators, and specialized roles.
- [Node redundancy](https://docs.multiversx.com/validators/redundancy): High‑availability setups for validator nodes: standby instances, failover strategies, and configuration guidance.
- [Protecting your keys](https://docs.multiversx.com/validators/key-management/protect-keys): Best practices for securing validator and wallet keys: storage, access control, rotation and recovery.
- [Rating](https://docs.multiversx.com/validators/rating): Validator rating system: how scores are computed, how they influence consensus selection, and how to recover from penalties.
- [Scripts & User config](https://docs.multiversx.com/validators/nodes-scripts/config-scripts): Install and configure MultiversX nodes using mx‑chain‑scripts: prerequisites, configuration and setup.
- [Staking & Unstaking](https://docs.multiversx.com/validators/staking/staking): Stake and unstake validator nodes: prerequisites, transactions, reward addresses and operational workflow.
- [Staking Providers](https://docs.multiversx.com/validators/delegation-manager): Guidance for MultiversX validators: staking providers.
- [Staking Providers APR](https://docs.multiversx.com/economics/staking-providers-apr): Learn about staking providers apr in MultiversX.
- [Staking v4](https://docs.multiversx.com/validators/staking-v4): What’s new in Staking v4: protocol changes, validator impact, reward mechanics and migration notes.
- [System Requirements](https://docs.multiversx.com/validators/system-requirements): Hardware, OS, storage and network requirements for running MultiversX validator nodes in production.
- [The Staking Smart Contract](https://docs.multiversx.com/validators/staking/staking-smart-contract): Operations of the Staking system smart contract: staking, parameters, and example transactions for common tasks.
- [Unjailing](https://docs.multiversx.com/validators/staking/unjailing): Guidance for MultiversX validators: unjailing.
- [Useful Links & Tools](https://docs.multiversx.com/validators/useful-links-tools): Curated links, documentation and utilities helpful for MultiversX validators and node operators.
- [Validator Keys](https://docs.multiversx.com/validators/key-management/validator-keys): Validator keys: purpose, generation, secure handling and usage in consensus.
- [Validators - Overview](https://docs.multiversx.com/validators/overview): Overview of MultiversX validator nodes, responsibilities, lifecycle, tooling and operational workflows.
- [Wallet Keys](https://docs.multiversx.com/validators/key-management/wallet-keys): Wallet keys used for staking and node management: types, usage and security considerations.

## Integrators
- [Accounts Management](https://docs.multiversx.com/integrators/accounts-management): Learn about MultiversX Integrators accounts management.
- [Advanced Observer Settings](https://docs.multiversx.com/integrators/advanced-observer-settings): Learn about MultiversX Integrators advanced observer settings.
- [Creating Transactions](https://docs.multiversx.com/integrators/creating-transactions): Learn about MultiversX Integrators creating transactions.
- [Deep History Squad](https://docs.multiversx.com/integrators/deep-history-squad): Access deep historical blockchain data via the Deep History Squad: use cases, endpoints and integration guidance.
- [EGLD integration guide](https://docs.multiversx.com/integrators/egld-integration-guide): Integrate EGLD into exchanges and wallets: addresses, transactions, fees, confirmations and best practices.
- [ESDT tokens integration guide](https://docs.multiversx.com/integrators/esdt-tokens-integration-guide): Learn about MultiversX Integrators esdt tokens integration guide.
- [Frequently Asked Questions](https://docs.multiversx.com/integrators/faq): Common integration questions: accounts, consensus, sharding, network parameters and API usage.
- [Integrators - Overview](https://docs.multiversx.com/integrators/overview): Learn about MultiversX Integrators integrators -.
- [Observing Squad](https://docs.multiversx.com/integrators/observing-squad): Observing Squad service: high‑availability access to network data for integrators and data providers.
- [Querying the Blockchain](https://docs.multiversx.com/integrators/querying-the-blockchain): Learn about MultiversX Integrators querying the blockchain.
- [Snapshotless Observing Squad](https://docs.multiversx.com/integrators/snapshotless-observing-squad): Learn about MultiversX Integrators snapshotless observing squad.
- [WalletConnect JSON-RPC Methods](https://docs.multiversx.com/integrators/walletconnect-json-rpc-methods): WalletConnect v2 JSON‑RPC methods for MultiversX: available calls, parameters and usage patterns.

## Advanced
- [Architecture](https://docs.multiversx.com/bridge/architecture): High-level architecture of the Ad‑Astra Bridge: core contracts on MultiversX and EVM chains, relayer quorum, and how cross‑chain transfers are coordinated.
- [Axelar Amplifier Setup](https://docs.multiversx.com/bridge/axelar): Set up an Axelar Amplifier verifier for MultiversX: prerequisites, tofnd and ampd services, configuration, and verification steps.
- [Bitcoin L2](https://docs.multiversx.com/sovereign/bitcoin-l2): Learn about MultiversX Sovereign bitcoin l2.
- [Concept](https://docs.multiversx.com/sovereign/concept): Learn about MultiversX Sovereign concept.
- [Cross Chain Execution](https://docs.multiversx.com/sovereign/cross-chain-execution): Learn about MultiversX Sovereign cross chain execution.
- [Custom Configurations](https://docs.multiversx.com/sovereign/custom-configurations): Learn about MultiversX Sovereign custom configurations.
- [Disclaimer](https://docs.multiversx.com/sovereign/disclaimer): Learn about MultiversX Sovereign disclaimer.
- [Distributed Setup](https://docs.multiversx.com/sovereign/distributed-setup): Learn about MultiversX Sovereign distributed setup.
- [Dual Staking](https://docs.multiversx.com/sovereign/dual-staking): Learn about MultiversX Sovereign dual staking.
- [Ethereum L2](https://docs.multiversx.com/sovereign/ethereum-l2): Learn about MultiversX Sovereign ethereum l2.
- [Governance](https://docs.multiversx.com/sovereign/governance): Learn about MultiversX Sovereign governance.
- [Governance - Overview](https://docs.multiversx.com/governance/overview): Overview of the on‑chain governance module: proposals, voting, execution and release context.
- [Governance interaction](https://docs.multiversx.com/governance/governance-interaction): Interact with the governance smart contract: submit proposals, vote and query status via VM endpoints and transactions.
- [Header Verifier](https://docs.multiversx.com/sovereign/header-verifier): Learn about MultiversX Sovereign header verifier.
- [Interoperability](https://docs.multiversx.com/sovereign/interoperability): Learn about MultiversX Sovereign interoperability.
- [Key Components](https://docs.multiversx.com/sovereign/key-components): Learn about MultiversX Sovereign key components.
- [Keystore files](https://docs.multiversx.com/wallet/keystore): Create, import and use keystore files safely with the MultiversX Web Wallet and tooling.
- [Ledger](https://docs.multiversx.com/wallet/ledger): Set up and use a Ledger device with MultiversX: install the app, connect securely, and sign transactions safely.
- [Local Setup](https://docs.multiversx.com/sovereign/local-setup): Learn about MultiversX Sovereign local setup.
- [Managing Sovereign](https://docs.multiversx.com/sovereign/managing-sovereign): Learn about MultiversX Sovereign managing sovereign.
- [MultiversX DeFi Wallet](https://docs.multiversx.com/wallet/wallet-extension): Browser extension for MultiversX: install and set up the DeFi Wallet, manage multiple accounts, and interact with dApps.
- [Mvx Esdt Safe](https://docs.multiversx.com/sovereign/mvx-esdt-safe): Learn about MultiversX Sovereign mvx esdt safe.
- [One Click Deployment](https://docs.multiversx.com/sovereign/one-click-deployment): Learn about MultiversX Sovereign one click deployment.
- [Other Vm](https://docs.multiversx.com/sovereign/other-vm): Learn about MultiversX Sovereign other vm.
- [Restaking](https://docs.multiversx.com/sovereign/restaking): Learn about MultiversX Sovereign restaking.
- [Security](https://docs.multiversx.com/sovereign/security): Learn about MultiversX Sovereign security.
- [Services](https://docs.multiversx.com/sovereign/services): Learn about MultiversX Sovereign services.
- [Software Dependencies](https://docs.multiversx.com/sovereign/software-dependencies): Learn about MultiversX Sovereign software dependencies.
- [Solana L2](https://docs.multiversx.com/sovereign/solana-l2): Learn about MultiversX Sovereign solana l2.
- [Sov Esdt Safe](https://docs.multiversx.com/sovereign/sov-esdt-safe): Learn about MultiversX Sovereign sov esdt safe.
- [Sovereign - Overview](https://docs.multiversx.com/sovereign/overview): Learn about MultiversX Sovereign sovereign -.
- [Sovereign Api](https://docs.multiversx.com/sovereign/sovereign-api): Learn about MultiversX Sovereign sovereign api.
- [Sovereign Explorer](https://docs.multiversx.com/sovereign/sovereign-explorer): Learn about MultiversX Sovereign sovereign explorer.
- [Sovereign Wallet](https://docs.multiversx.com/sovereign/sovereign-wallet): Learn about MultiversX Sovereign sovereign wallet.
- [Standalone Evm](https://docs.multiversx.com/sovereign/standalone-evm): Learn about MultiversX Sovereign standalone evm.
- [System Requirements](https://docs.multiversx.com/sovereign/system-requirements): Learn about MultiversX Sovereign system requirements.
- [Testing](https://docs.multiversx.com/sovereign/testing): Learn about MultiversX Sovereign testing.
- [Token Economics](https://docs.multiversx.com/sovereign/token-economics): Learn about MultiversX Sovereign token economics.
- [Token Management](https://docs.multiversx.com/sovereign/token-management): Learn about MultiversX Sovereign token management.
- [Token Types](https://docs.multiversx.com/bridge/token-types): Bridge token configurations across MultiversX and EVM chains: mint/burn, lock/unlock, native vs non‑native, and their operational implications.
- [Transfer Flows](https://docs.multiversx.com/bridge/transfer-flows): Step‑by‑step token transfer flows for the MultiversX bridge: EVM↔MultiversX directions, smart‑contract call path, refund scenarios, and relayer processing.
- [Validators](https://docs.multiversx.com/sovereign/validators): Validators in Sovereign Chains: roles, selection, staking and security considerations for independent networks.
- [Vm Intro](https://docs.multiversx.com/sovereign/vm-intro): Learn about MultiversX Sovereign vm intro.
- [Wallets - Overview](https://docs.multiversx.com/wallet/overview): Overview of MultiversX wallets: Web Wallet, xPortal, Ledger and DeFi Wallet, with setup and usage guides.
- [Web Wallet](https://docs.multiversx.com/wallet/web-wallet): Create or import accounts, send and receive EGLD and tokens, stake, and securely manage assets using the MultiversX Web Wallet.
- [Web Wallet Tokens](https://docs.multiversx.com/wallet/wallet-token): Issue and manage ESDT tokens in the MultiversX Web Wallet: prerequisites, creation steps, configuration properties, and transferring tokens.
- [Webhooks](https://docs.multiversx.com/wallet/webhooks): Integrate with the Web Wallet via URL webhooks to request login and pre‑filled transactions, with callback redirects.
- [Whitelist Requirements](https://docs.multiversx.com/bridge/whitelist-requirements): Whitelist requirements for the Ad‑Astra bridge: prerequisites, token branding, and assigning roles to wrapper or safe contracts.
- [xAlias](https://docs.multiversx.com/wallet/xalias): xAlias single sign‑on for MultiversX: Google‑based onboarding, self‑custody with later conversion, and Web Wallet‑compatible integration hooks.
- [xPortal](https://docs.multiversx.com/wallet/xportal): xPortal mobile app: secure wallet, token swaps, payments, missions, AI avatar creation and upcoming debit card features.

## Terminology
- [Terminology](https://docs.multiversx.com/welcome/terminology): Learn about terminology in MultiversX.