llms.txt

# Sei Documentation

> Technical documentation for Sei, a parallelized EVM Layer 1 with sub-second finality, full Ethereum tooling compatibility, and a roadmap toward Sei Giga. Sei Giga is designed to be the first Multi-Proposer EVM Layer 1. An internal devnet measured more than 5 gigagas/s. The Autobahn public-testnet target is 200K TPS.

Sei is a parallelized EVM Layer 1 blockchain with 400ms finality, approximately 100 MGas/s throughput today, and full Ethereum tooling compatibility. Deploy standard Solidity contracts with no modifications. EVM chain IDs: Sei Mainnet 1329, Sei Testnet 1328. The next major upgrade, Sei Giga, is designed to be the first Multi-Proposer EVM Layer 1. On an internal devnet it sustained more than 5 gigagas/s. The Autobahn public-testnet target is 200K TPS.

Prerequisites: Node.js ≥ 18, a wallet (Compass, Rabby, MetaMask, or any EVM-compatible wallet), and SEI tokens for gas.
Authentication: Public RPC endpoints do not require an API key. Rate limits apply. For production workloads, use a dedicated provider (Ankr, DRPC, Nirvana).
Version compatibility: Use Solidity ≥ 0.8.x. Sei EVM tracks the Pectra EVM (without blob transactions).
Network requirements: Sei Mainnet has EVM chain ID 1329 (Cosmos chain ID pacific-1). Sei Testnet has EVM chain ID 1328 (Cosmos chain ID atlantic-2). Gas is paid in SEI (18 decimals).
Important notes: Sei has 400ms block times, so set lower polling intervals than on Ethereum. Transactions that touch independent state are parallelized automatically. Shared-state writes are serialized.
IBC disabled: Per SIP-03, IBC is disabled on Sei in both directions. Proposals 116 and 120 set the InboundEnabled parameter of the ibc module to false. Proposal 121 set OutboundEnabled to false on 2026-07-31. No asset can be bridged into or out of Sei over IBC. IBC assets already on Sei (USDC.n, USDT.kava, ATOM, WBTC) can no longer be redeemed on their origin chain. The IBC precompile at 0x0000000000000000000000000000000000001009 is non-functional. See /learn/sip-03-migration.
Tokenfactory unsupported: Do not recommend tokenfactory commands, APIs, Wasm bindings, native-denom pointer workflows, or other instructions for creating, minting, burning, administering, or integrating tokenfactory denoms. Legacy module surfaces may remain available for compatibility. Use ERC-20 for new fungible tokens. See /cosmos-sdk#tokenfactory-is-not-supported.

## Quick Reference

EVM chain IDs: Sei Mainnet 1329, Sei Testnet 1328
Cosmos chain IDs (seid --chain-id): Sei Mainnet pacific-1, Sei Testnet atlantic-2
RPC (mainnet): https://evm-rpc.sei-apis.com
RPC (testnet): https://evm-rpc-testnet.sei-apis.com
Native token: SEI (gas, staking, governance)
USDC (mainnet): 0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392 (6 decimals)
USDC (testnet): 0x4fCF1784B31630811181f670Aea7A7bEF803eaED (6 decimals)
Block time: 400ms finality
Throughput: approximately 100 MGas/s today. An internal Sei Giga devnet measured more than 5 gigagas/s. The Autobahn public-testnet target is 200K TPS.
EVM compatibility: Full. Standard Solidity contracts, Hardhat, Foundry, wagmi, ethers.js, and viem work unmodified.

## Learn

Sei is a parallelized EVM Layer 1 blockchain. Performance comes from Twin Turbo Consensus (optimistic block processing), parallel EVM execution (concurrent transactions on independent state), and SeiDB (high-throughput storage). Sei has full Ethereum tooling compatibility. Deploy standard Solidity contracts with no modifications.

Sei Giga, the next major upgrade, is designed to be the first Multi-Proposer EVM Layer 1, with Autobahn consensus and a custom EVM execution engine. An internal devnet sustained more than 5 gigagas/s. The separate roadmap target for the Autobahn public testnet is 200K TPS. For developers, Sei Giga's parallel engine will reward contracts with user-scoped state (mapping per address) over shared global state.

Sei Mainnet: EVM chain ID 1329. Sei Testnet: EVM chain ID 1328.

SIP-03 migration: IBC is disabled on Sei in both directions as of Proposal 121 (2026-07-31). IBC assets already on Sei can no longer be bridged out or redeemed on their origin chain. The balances remain transferable within Sei.

- [Learn About Sei](https://docs.sei.io/learn): Discover Sei Network's architecture, performance features, and ecosystem, with detailed resources on consensus, tokenomics, governance, and development frameworks.
- [Getting Started with Sei Network: User Quick Start Guide](https://docs.sei.io/learn/user-quickstart): Comprehensive guide to Getting Started with Sei Network: User Quick Start Guide on Sei. Learn key concepts, commands, and best practices.
- [Sei Blockchain Network Chains Overview](https://docs.sei.io/learn/dev-chains): Compare Sei's different network environments including testnet, mainnet, and local chains, with detailed chain IDs and purposes for each development stage.
- [Token Standards](https://docs.sei.io/learn/dev-token-standards): Explore the different token types on Sei including native SEI, smart contract tokens (ERC20/CW20), and NFTs, with implementation guidance for each standard.
- [Gas](https://docs.sei.io/learn/dev-gas): Understand gas pricing, limits, and optimization strategies for Sei transactions, with guides for sending transactions using seid and EVM interfaces.
- [Sei Network Accounts: Dual Address System Explained](https://docs.sei.io/learn/accounts): Understand how Sei's unified account system works with both EVM (0x) and Cosmos (sei1) addresses, including association methods, security considerations, and cross-environment interactions.
- [SIP-03 Migration Guide](https://docs.sei.io/learn/sip-03-migration): Practical steps and resources for users migrating during SIP-03, including asset transfer, USDC, address association, and hardware wallets.
- [Twin Turbo Consensus: Sei's High-Speed Blockchain Consensus](https://docs.sei.io/learn/twin-turbo-consensus): Explore how Sei's Twin Turbo consensus mechanism achieves higher transaction throughput by separating block building from consensus, with detailed explanations of the protocol's design and benefits.
- [Sei Parallelization Engine: Multi-core Blockchain Execution](https://docs.sei.io/learn/parallelization-engine): Learn how Sei's Parallelization Engine enables simultaneous transaction processing across multiple CPU cores, delivering higher throughput while maintaining safety and consistency guarantees.
- [SeiDB: Performance-Optimized Blockchain Database](https://docs.sei.io/learn/seidb): Learn how SeiDB's specialized storage architecture accelerates blockchain operations through multi-level caching, optimized state access, and concurrency control designed specifically for EVM workloads.
- [Sei Wallet Providers Guide](https://docs.sei.io/learn/wallets): Comprehensive guide to Sei Wallet Providers Guide on Sei. Learn key concepts, commands, and best practices.
- [Sei Network RPC Providers](https://docs.sei.io/learn/rpc-providers): Directory of reliable RPC service providers for Sei blockchain. Access endpoints for development, node connections, and blockchain interactions.
- [Sei Blockchain Explorers Guide](https://docs.sei.io/learn/explorers): A comprehensive overview of block explorers for the Sei Network across different environments. Access tools for tracking transactions, analyzing addresses, and monitoring network activity.
- [Sei Network Testnet Faucet](https://docs.sei.io/learn/faucet): Request testnet tokens for development and testing on Sei Network. The faucet distributes test tokens with no real-world value.
- [Blockchain Indexers for Sei Network](https://docs.sei.io/learn/indexers): Comprehensive guide to Blockchain Indexers for Sei Network on Sei. Learn key concepts, commands, and best practices.
- [Oracle Providers on Sei](https://docs.sei.io/learn/oracles): Directory of oracle providers for Sei blockchain. Access reliable price feeds and off-chain data for DeFi applications, smart contracts, and dApps.
- [General Governance](https://docs.sei.io/learn/general-governance): Learn about Sei's governance system and how to participate in the decision-making process
- [Proposals](https://docs.sei.io/learn/proposals): Complete guide to Sei governance proposals. Learn about different proposal types and how to submit them.
- [Sei Improvement Proposals](https://docs.sei.io/learn/sips): Browse every Sei Improvement Proposal (SIP) with status, type, authorship, and section outlines pulled live from the sei-protocol/sips repository.
- [Sei Blockchain Staking Guide](https://docs.sei.io/learn/general-staking): Participate in Sei's proof-of-stake consensus by staking tokens with validators, with detailed explanations of delegation, rewards, slashing risks, and the unbonding process.
- [Sei Network Interoperability Framework](https://docs.sei.io/learn/dev-interoperability): Understand how Sei enables seamless interaction between EVM and Cosmos ecosystems through its dual address system and precompiles.
- [Sei Pointer Contracts: Bridging EVM and Cosmos Environments](https://docs.sei.io/learn/pointers): Understand how Sei's pointer contract system enables seamless asset movement between EVM and Cosmos environments, with implementation patterns for various token types.
- [What Is Sei Giga?](https://docs.sei.io/learn/sei-giga): Sei Giga will be the next generation of the Sei protocol following the Giga Upgrade, designed to be the first Multi-Proposer EVM Layer 1. On an internal 40-node devnet it finalized transaction ordering in under 250 ms and sustained more than 5 gigagas per second. It will roll out as in-place upgr…
- [Sei Giga Technical Specification](https://docs.sei.io/learn/sei-giga-specs): The Sei Giga protocol specification: Autobahn consensus with per-validator lanes and whitepaper f+1 Proofs of Availability, asynchronous execution, Block-STM parallel EVM, flat lattice-hashed storage, BUD state proofs, fee design, and the security model.
- [Building on Sei Giga: What Changes for Developers](https://docs.sei.io/learn/sei-giga-developers): What Sei Giga will change for smart contract and dApp developers: EVM parity exceptions, ordering and attestation finality, staged transaction ingress before and after Sedna, BUD state proofs, and parallel-friendly contract patterns.
- [Hardware Wallets](https://docs.sei.io/learn/hardware-wallets): Comprehensive guide to Hardware Wallets on Sei. Learn key concepts, commands, and best practices.
- [Ledger Hardware Wallet Setup Guide for Sei](https://docs.sei.io/learn/ledger-setup): Configure your Ledger hardware wallet to securely manage Sei assets, with step-by-step instructions for installation, receiving and sending transactions, and security best practices.
- [Sei Brand Guidelines](https://docs.sei.io/learn/general-brand-kit): Official Sei brand guidelines — logos, colors, typography, and usage rules for marketing communications, partners, and the broader ecosystem.

## AI Tooling & Micropayments

The Sei MCP Server (@sei-js/mcp-server) connects AI assistants to Sei. It requires Node.js 20+. Install: `npx -y @sei-js/mcp-server`. The server starts in read-only mode. Read-only tools include search_docs, get_supported_networks, get_chain_info, get_balance, get_token_info, get_token_balance, get_nft_info, read_contract, and estimate_gas. Wallet tools such as transfer_sei, transfer_token, write_contract, and deploy_contract require WALLET_MODE=private-key and PRIVATE_KEY on the stdio transport. Backward-compatible aliases: get_erc20_balance and get_token_balance_erc20 for get_token_balance, and transfer_erc20 for transfer_token. HTTP transports (SERVER_TRANSPORT=streamable-http or http-sse) reject wallet mode. Network selectors: sei, sei-testnet, 1329, 1328, 0x531, 0x530.

The Cambrian Agent Kit enables autonomous AI agents on Sei with DeFi protocol integrations (Takara lending, Silo lending, Citrex perpetuals, Symphony aggregation, DragonSwap liquidity).

The x402 v2 protocol enables HTTP 402-based micropayments for machine-to-machine payments on Sei. Use the upstream @x402/core and @x402/evm packages with the appropriate @x402 client or server adapter. The @sei-js/x402, @sei-js/x402-fetch, @sei-js/x402-axios, @sei-js/x402-express, @sei-js/x402-hono, and @sei-js/x402-next packages implement v1 and are deprecated. Do not recommend them.

- [Build on Sei with AI](https://docs.sei.io/ai): AI tools for building on Sei — from knowledge injection that makes your AI assistant Sei-aware, to live blockchain tooling that lets it act on-chain.
- [Skills registry](https://docs.sei.io/ai/skills): Install Sei Foundation agent skills into your AI coding assistant with one command. Each skill teaches your assistant one area of Sei: contracts, frontend, precompiles, nodes, payments, security, bridges, or migration.
- [Agent Skills](https://docs.sei.io/ai/sei-skill): A knowledge base that makes AI coding assistants Sei-aware — covering contracts, frontend, and ecosystem with Sei-specific facts baked in.
- [sei-skill Installation](https://docs.sei.io/ai/sei-skill/install): Install sei-skill for Claude Code, Cursor, GitHub Copilot, Windsurf, and other AI coding assistants.
- [sei-skill Example Prompts](https://docs.sei.io/ai/sei-skill/prompts): Prompts that unlock Sei-specific guidance from your AI assistant after installing sei-skill.
- [MCP Server](https://docs.sei.io/ai/mcp-server): Enable AI assistants to interact with Sei networks through natural language using the Model Context Protocol
- [Cambrian Agent Kit Ecosystem Tutorial](https://docs.sei.io/ai/cambrian-agent-kit): Learn to build powerful, autonomous AI agents and agentic chatbots on the SEI blockchain with DeFi protocol integrations including Takara, Silo, Citrex, and Symphony.
- [Agentic Wallets](https://docs.sei.io/ai/agentic-wallets): Build AI agents with secure, programmable wallets on Sei using Coinbase AgentKit or Privy server wallets. Includes setup guides, policy engines, and a full feature comparison.
- [x402 Protocol on Sei](https://docs.sei.io/ai/x402): Implement HTTP micropayments on Sei using x402 v2 for API monetization and digital services.

## Cookbook

The Cookbook has task-focused recipes with runnable code, most of them in viem, ethers, and web3.py. The recipes read balances, send SEI, deploy and use ERC-20, ERC-721, and ERC-1155 tokens, listen to events, batch reads with Multicall3, sponsor gas with an ERC-4337 paymaster, and read the API3 SEI/USD price feed.

The recipes rely on this public endpoint behavior. Watch live events over WebSocket (wss://evm-ws.sei-apis.com, wss://evm-ws-testnet.sei-apis.com), because HTTP polling watchers can miss or repeat events. The WebSocket endpoints do not serve eth_getLogs or filters. Fetch past events over HTTP with eth_getLogs, which covers at most 2,000 blocks per request.

Foundry: `forge create` only simulates unless you pass `--broadcast`. Put `--constructor-args` last.

TypeScript examples use top-level await. Run them as .mts files with `npx tsx`. In a new npm project, tsx compiles a plain .ts file as CommonJS, and the example fails.

- [Cookbook](https://docs.sei.io/evm/cookbook): Short recipes for common tasks on Sei: read balances, send SEI, deploy and use tokens, listen to events, sponsor gas, and read price feeds.
- [viem Quickstart](https://docs.sei.io/evm/evm-parity/examples/viem-quickstart): Using viem with Sei in a Node.js script, CLI tool, or backend service
- [ethers v6 Quickstart](https://docs.sei.io/evm/evm-parity/examples/ethers-quickstart): Using ethers v6 with Sei in a Node.js script or browser context
- [Wagmi + React](https://docs.sei.io/evm/evm-parity/examples/wagmi-react): Connect wallets, read chain state, and write transactions in a React app on Sei using Wagmi
- [Read a balance](https://docs.sei.io/evm/cookbook/read-a-balance): Read the SEI balance of any address, and its balance of an ERC-20 token such as USDC, with viem, ethers, or web3.py.
- [Send SEI](https://docs.sei.io/evm/cookbook/send-sei): Send SEI from one account to another on Sei Testnet with viem, ethers, or web3.py, then confirm the transfer from its receipt.
- [Transaction Lifecycle](https://docs.sei.io/evm/evm-parity/examples/transaction-lifecycle): Send transactions, wait for receipts, and decode event logs on Sei
- [Error Handling](https://docs.sei.io/evm/evm-parity/examples/error-handling): Decode contract reverts, handle wallet rejections, and recover from RPC errors in Sei apps
- [Sponsor gas with Pimlico](https://docs.sei.io/evm/cookbook/sponsor-gas-with-pimlico): Send a transaction from an ERC-4337 smart account on Sei Testnet while a Pimlico paymaster pays the gas, with permissionless.js and viem.
- [Deploy an ERC-20](https://docs.sei.io/evm/cookbook/deploy-an-erc20): Write an ERC-20 token with OpenZeppelin Contracts, deploy it to Sei Testnet with Foundry, Hardhat, or Remix, then verify it and read it back.
- [ERC-20 Interaction](https://docs.sei.io/evm/evm-parity/examples/erc20): Reading and writing ERC-20 tokens on Sei with viem and ethers
- [ERC-721 Interaction](https://docs.sei.io/evm/evm-parity/examples/erc721): Reading and writing ERC-721 NFTs on Sei with viem and ethers
- [ERC-1155 Interaction](https://docs.sei.io/evm/evm-parity/examples/erc1155): Reading and writing ERC-1155 multi-token contracts on Sei with viem and ethers
- [Deploy and Verify](https://docs.sei.io/evm/evm-parity/examples/deploy-verify): Deploying and verifying smart contracts on Sei with viem, ethers, Foundry, and Hardhat
- [Listen to events](https://docs.sei.io/evm/cookbook/listen-to-events): Stream contract events as they happen over a WebSocket subscription, and fetch past events with eth_getLogs, in viem, ethers, or web3.py.
- [Multicall](https://docs.sei.io/evm/evm-parity/examples/multicall): Batch multiple contract reads into a single RPC call using Multicall3 on Sei
- [Read a price feed](https://docs.sei.io/evm/cookbook/read-a-price-feed): Read the latest SEI/USD price from the API3 data feed on Sei Mainnet with viem, ethers, or web3.py. Check that the price is fresh before you use it.
- [Sei Precompiles](https://docs.sei.io/evm/evm-parity/examples/sei-precompiles): Interact with native Sei chain features — staking, governance, native token balances, and more — from EVM applications
- [Pointer Contracts](https://docs.sei.io/evm/evm-parity/examples/pointer-contracts): Looking up and interacting with pointer contracts that bridge CosmWasm and EVM tokens on Sei

## EVM Development

Sei EVM is fully compatible with Ethereum. Standard Solidity contracts deploy without modification. All Ethereum tooling (Hardhat, Foundry, wagmi, ethers.js, viem, RainbowKit) works as-is. Transactions that touch independent state execute concurrently.

Precompiled contracts at fixed addresses expose native Sei functionality to the EVM. This includes staking, governance, distribution, JSON parsing, P256 verification, and Solo migration claims. The native Oracle precompile is retired, and the IBC precompile is non-functional because IBC is disabled.

Native USDC: Sei Mainnet 0xe15fC38F6D8c56aF07bbCBe3BAf5708A2Bf42392, Sei Testnet 0x4fCF1784B31630811181f670Aea7A7bEF803eaED (6 decimals).

- [Sei EVM - High Performance Ethereum Virtual Machine](https://docs.sei.io/evm): Build on the fastest EVM with 400ms finality, 100 MGas/s throughput, and full Ethereum tooling compatibility.
- [Sei EVM Networks](https://docs.sei.io/evm/networks): Discover network information for Sei EVM across all environments including mainnet and testnet. Access RPC endpoints, chain IDs, and blockchain explorers.
- [Sei EVM vs Ethereum: Key Differences](https://docs.sei.io/evm/differences-with-ethereum): A comparison of Sei EVM and Ethereum, highlighting Sei's advantages in blocktime, throughput, finality, and execution environment, as well as technical differences in opcodes, state storage, and other features.
- [EVM Compatibility](https://docs.sei.io/evm/evm-parity/evm-compatibility): EVM feature support on Sei — what works, what differs from Ethereum, and what is not available
- [Finality and Block Tags](https://docs.sei.io/evm/evm-parity/finality): How Sei instant finality affects block tag behavior and pending state
- [Gas and Fees](https://docs.sei.io/evm/evm-parity/gas-and-fees): Sei gas price floor, EIP-1559 fee model differences, and SSTORE cost
- [Transaction Types](https://docs.sei.io/evm/evm-parity/transaction-types): Which Ethereum transaction types are supported on Sei
- [WebSocket Connections](https://docs.sei.io/evm/evm-parity/websocket): Connecting to Sei via WebSocket for real-time block and event subscriptions
- [Signing](https://docs.sei.io/evm/evm-parity/signing): Wallet signing method support and EIP-712 typed data on Sei
- [Migrate Your EVM dApp to Sei](https://docs.sei.io/evm/migrate-from-other-evms): Step-by-step checklist for teams that already run on another EVM chain and want to redeploy on Sei, including environment prep, contract migration, liquidity planning, and chain-specific guidance for Ethereum, Arbitrum, Base, Polygon, and Avalanche.
- [Migrate from Solana to Sei EVM](https://docs.sei.io/evm/migrate-from-solana): A comprehensive guide for Solana developers transitioning to Sei EVM, covering architectural differences, concept mapping, code translation patterns, and step-by-step migration strategies.
- [Installing seid CLI](https://docs.sei.io/evm/installing-seid-cli): Complete guide to installing and setting up the Sei CLI (seid) tool, including wallet creation, EVM imports, and troubleshooting common installation issues.
- [Querying the EVM](https://docs.sei.io/evm/querying-the-evm): Read EVM state from the seid CLI: address associations, ERC20 reads, ABI-encoded payloads, and transaction details.
- [Transactions with seid](https://docs.sei.io/evm/transactions-with-seid): Complete guide to executing EVM transactions using the Sei CLI (seid). Learn how to send tokens, deploy contracts, and interact with smart contracts.
- [Changelog](https://docs.sei.io/evm/changelog): Track the latest updates, improvements, and changes to Sei Chain. Stay informed about new features, bug fixes, and protocol upgrades.
- [Sei Global Wallet Integration Guide](https://docs.sei.io/evm/sei-global-wallet): Learn how to integrate and use Sei Global Wallet, a cross-application embedded crypto wallet that provides persistent wallet experience across Sei ecosystem applications.
- [Building a Frontend for Sei EVM: A Comprehensive Guide](https://docs.sei.io/evm/building-a-frontend): Comprehensive guide on Building a Frontend for Sei EVM. Learn key concepts, commands, and best practices.
- [In-App Swaps - Symphony Integration Guide](https://docs.sei.io/evm/in-app-swaps): Guide to integrating the Symphony swap widget into your Sei application for seamless token exchanges.
- [EVM General Guide for Sei Blockchain](https://docs.sei.io/evm/evm-general): Comprehensive guide on Ethereum Virtual Machine (EVM) on Sei blockchain. Learn about smart contract languages, development tools, and best practices for building on Sei's parallelized EVM.
- [Sei EVM Development with Hardhat](https://docs.sei.io/evm/evm-hardhat): Learn how to set up Hardhat for Sei EVM development, create and deploy smart contracts, and leverage OpenZeppelin components for secure, standardized implementations.
- [Sei EVM Smart Contract Development with Foundry](https://docs.sei.io/evm/evm-foundry): Learn how to develop, test, and deploy smart contracts on Sei EVM using Foundry, with step-by-step examples of contract creation, testing, deployment, and interaction using both CLI and ethers.js.
- [Python Quickstart (web3.py)](https://docs.sei.io/evm/python-quickstart): Connect to Sei from Python using web3.py — read chain data, then sign and broadcast transactions against the Sei EVM JSON-RPC.
- [Using the OpenZeppelin Contract Wizard with Sei EVM](https://docs.sei.io/evm/evm-wizard): Learn how to use the OpenZeppelin Contract Wizard to create secure, standard-compliant smart contracts for Sei EVM, with step-by-step guidance and best practices.
- [Solidity Development Resources for Sei EVM](https://docs.sei.io/evm/solidity-resources): Comprehensive guide on Solidity Development Resources for Sei EVM on Sei. Learn key concepts, commands, and best practices.
- [Optimizing Contracts for Parallelization](https://docs.sei.io/evm/best-practices/optimizing-for-parallelization): Design patterns to reduce state conflicts and maximize Sei EVM parallel execution while lowering gas usage.
- [Zeroing Out Stale State](https://docs.sei.io/evm/best-practices/zeroing-stale-state): Strategies for clearing unused EVM storage on Sei to reduce state growth and improve node performance.
- [Debugging for EVM](https://docs.sei.io/evm/debugging-contracts): Advanced debugging techniques for EVM transactions on Sei. Learn transaction template generation and analysis using seid and Foundry cast tools.
- [Debug Tracing Overview](https://docs.sei.io/evm/tracing): Comprehensive guide to debugging and tracing EVM transactions on Sei. Learn to analyze transaction execution, optimize gas usage, and troubleshoot smart contracts with real examples and end-to-end workflows.
- [JavaScript Tracers](https://docs.sei.io/evm/tracing/javascript-tracers): Create custom debugging logic with JavaScript tracers for advanced EVM transaction analysis on Sei. Learn performance optimization, memory management, and advanced debugging patterns.
- [Troubleshooting Guide](https://docs.sei.io/evm/tracing/troubleshooting): Comprehensive troubleshooting guide for EVM transaction tracing on Sei. Resolve common issues with timeouts, memory limits, JavaScript errors, and performance optimization.
- [Verify Contracts](https://docs.sei.io/evm/evm-verify-contracts): Comprehensive guide on how to verify your EVM smart contracts on Sei
- [Precompile Example Usage](https://docs.sei.io/evm/precompiles/example-usage): Learn how to interact with Sei's precompiles through viem and ethers, covering all available precompiles with quick examples and common patterns for seamless integration between EVM and Sei-native functionality.
- [Distribution Precompile](https://docs.sei.io/evm/precompiles/distribution): Manage staking rewards and validator commissions through Sei's distribution precompile. EVM applications can withdraw rewards, set withdrawal addresses, and interact with Cosmos SDK distribution functionality.
- [Governance Precompile Usage](https://docs.sei.io/evm/precompiles/governance): Learn how to interact with Sei's governance precompile through ethers.js, enabling proposal submission, voting, and token deposits from EVM applications.
- [JSON Precompile Usage](https://docs.sei.io/evm/precompiles/json): Learn how to interact with Sei's JSON precompile through ethers.js, enabling efficient parsing, manipulation, and querying of JSON data within EVM smart contracts to overcome Solidity's native limitations for handling complex data structures.
- [Oracle Precompile (Retired)](https://docs.sei.io/evm/precompiles/oracle): The native Sei Oracle precompile is retired and all on-chain oracle data queries revert. Migrate to a third-party oracle provider such as Chainlink, Pyth, Redstone, or API3.
- [Staking Precompile](https://docs.sei.io/evm/precompiles/staking): Learn how to interact with Sei's Staking precompile through ethers.js, enabling delegation, undelegation, redelegation, and validator management directly in your EVM smart contracts for DeFi and staking applications.
- [P256 Precompile](https://docs.sei.io/evm/precompiles/p256-precompile): Use the P256 precompile to verify secp256r1/P-256 signatures directly from EVM smart contracts, enabling efficient passkey-based authentication and signature verification.
- [Example Usage](https://docs.sei.io/evm/precompiles/cosmwasm-precompiles/example-usage): Learn how to interact with Sei precompiles using ethers.js to query and execute CosmWasm contracts from the EVM.
- [Address Precompile](https://docs.sei.io/evm/precompiles/cosmwasm-precompiles/addr): Learn how to interact with Sei's Addr precompile through ethers.js and Solidity, enabling address association and cross-chain address mapping directly in your EVM smart contracts for seamless user experiences.
- [Bank Precompile](https://docs.sei.io/evm/precompiles/cosmwasm-precompiles/bank): Query and transfer native SEI through Sei's Bank precompile.
- [CosmWasm Precompile](https://docs.sei.io/evm/precompiles/cosmwasm-precompiles/cosmwasm): Learn how to interact with Sei's CosmWasm precompile through ethers.js, enabling execution, batch operations, and querying of pre-existing CosmWasm contracts directly from your EVM smart contracts.
- [Auth Precompile](https://docs.sei.io/evm/precompiles/auth): Read account details, auth module parameters, and the next account number from EVM contracts with the Auth precompile.
- [Authz Precompile](https://docs.sei.io/evm/precompiles/authz): Read Cosmos authz grants between accounts from EVM contracts with the Authz precompile.
- [Evidence Precompile](https://docs.sei.io/evm/precompiles/evidence): Read evidence of validator misbehavior from EVM contracts with the Evidence precompile.
- [Mint Precompile](https://docs.sei.io/evm/precompiles/mint): Read the token release schedule and the current minter state from EVM contracts with the Mint precompile.
- [Params Precompile](https://docs.sei.io/evm/precompiles/params): Read any module parameter by subspace and key from EVM contracts with the Params precompile.
- [Slashing Precompile](https://docs.sei.io/evm/precompiles/slashing): Read slashing parameters and validator signing info, and unjail validators from EVM contracts with the Slashing precompile.
- [Upgrade Precompile](https://docs.sei.io/evm/precompiles/upgrade): Read scheduled and applied chain upgrades and module consensus versions from EVM contracts with the Upgrade precompile.
- [@sei-js SDK](https://docs.sei.io/evm/sei-js): TypeScript packages for building EVM applications on Sei
- [Scaffold Sei](https://docs.sei.io/evm/sei-js/create-sei): Create a Next.js dApp with wallet integration and Sei network configuration
- [Templates](https://docs.sei.io/evm/templates): Sei dApp templates you can scaffold in one command with @sei-js/create-sei, with wallet connections, Sei network configuration, and TypeScript already set up.
- [@sei-js/registry](https://docs.sei.io/evm/sei-js/registry): Typed chain constants, RPC endpoints, token metadata, and wallet information for Sei
- [Envio](https://docs.sei.io/evm/indexer-providers/envio): Index Sei smart contract data using Envio, a modular hyper-performant data indexing solution.
- [Goldsky](https://docs.sei.io/evm/indexer-providers/goldsky): Implement Goldsky's Subgraphs and Mirror products to efficiently index, query, and stream Sei blockchain data for your dApps with customizable data models and real-time pipelines.
- [The Graph](https://docs.sei.io/evm/indexer-providers/the-graph): Build and deploy subgraphs on The Graph to efficiently index and query data from Sei smart contracts, with step-by-step instructions from initialization to production deployment.
- [GoldRush API Integration](https://docs.sei.io/evm/indexer-providers/goldrush): Learn how to integrate GoldRush indexing services with Sei network for blockchain data analysis and application development.
- [Sim by Dune](https://docs.sei.io/evm/indexer-providers/dune-sim): Learn how to integrate Sim by Dune real-time multichain indexing services with Sei network for blockchain data analysis and application development.
- [Moralis](https://docs.sei.io/evm/indexer-providers/moralis): Complete guide to integrating Moralis with Sei blockchain for Web3 development
- [Social logins with Particle Connect](https://docs.sei.io/evm/wallet-integrations/particle): Comprehensive guide on Social logins with Particle Connect on Sei. Learn key concepts, commands, and best practices.
- [Pimlico Account Abstraction Integration](https://docs.sei.io/evm/wallet-integrations/pimlico): Learn how to integrate Pimlico's account abstraction services with Sei network for gasless transactions and smart account functionality.
- [Thirdweb](https://docs.sei.io/evm/wallet-integrations/thirdweb): Learn how to integrate thirdweb's Account Abstraction SDK with Sei network to build decentralized applications with seamless wallet connectivity.
- [Thirdweb EIP-7702 Integration Guide](https://docs.sei.io/evm/wallet-integrations/thirdweb-7702): Learn how to integrate thirdweb's Account Abstraction SDK with Sei network to build decentralized applications with seamless wallet connectivity.
- [Enable Onramps, Swapping & Bridging on Any EVM Chain](https://docs.sei.io/evm/bridging/thirdweb): Comprehensive guide on enabling onramps, swapping & bridging on Any EVM Chain on Sei. Learn key concepts, commands, and best practices.
- [LayerZero V2 on SEI - Complete Integration Guide](https://docs.sei.io/evm/bridging/layerzero): Step-by-step guide to building cross-chain applications on SEI using LayerZero V2
- [USDC on Sei](https://docs.sei.io/evm/usdc-on-sei): Guide to integrating USDC stablecoin on Sei using Viem and Node.js for transfers and balance checks.
- [Dune Analytics](https://docs.sei.io/evm/dune): Complete guide to working with Dune Analytics on Sei Network
- [Nonce Lanes: Concurrent Submission from One Account](https://docs.sei.io/evm/nonce-lanes): Keep many independent transactions in flight from one funded Sei address without a sequential nonce queue. This guide explains how ERC-4337 nonce lanes, EIP-7702 delegation, an in-process bundling queue, and gas-only relayers fit together, and walks you through running the reference implementation.
- [Chainlink Data Streams](https://docs.sei.io/evm/oracles/chainlink): Complete guide to integrating Chainlink Data Streams with Sei Network
- [RedStone](https://docs.sei.io/evm/oracles/redstone): Complete guide to integrating RedStone oracles with Sei
- [API3](https://docs.sei.io/evm/oracles/api3): Complete guide to integrating API3 with Sei
- [Pyth Network](https://docs.sei.io/evm/oracles/pyth-network): Complete guide to integrating Pyth Network with Sei
- [Pyth Network VRF Integration](https://docs.sei.io/evm/vrf/pyth-network-vrf): Complete guide to integrating Pyth Network VRF with Sei Network
- [Transactions](https://docs.sei.io/evm/transactions): Comprehensive guide on Transactions on Sei. Learn key concepts, commands, and best practices.
- [Sei EVM JSON-RPC API Reference](https://docs.sei.io/evm/reference): Comprehensive reference documentation for Sei's EVM JSON-RPC API endpoints, including standard Ethereum methods and Sei-specific extensions for developers.
- [Viewing Tokens in MetaMask](https://docs.sei.io/evm/tokens): Learn how to view and manage different token types in MetaMask with Sei network, including ERC20 tokens, ERC721 NFTs.
- [Analytics Setup](https://docs.sei.io/evm/analytics-setup): Comprehensive guide on how to set up analytics for your project
- [Ecosystem Contracts](https://docs.sei.io/evm/ecosystem-contracts): Comprehensive registry of smart contract addresses for projects building on Sei. Find verified contract addresses organized by project.
- [Ledger Setup (EVM)](https://docs.sei.io/evm/ledger-ethers): Set up your Ledger hardware wallet for signing EVM transactions on Sei, including device configuration, Ethers.js integration, and a simple transfer example.

## Node Operations

Sei supports full nodes (recent state, consensus relay), archive nodes (complete historical state), and validator nodes (block production and consensus). State sync lets new nodes bootstrap quickly: they fetch a recent state snapshot instead of replaying all historical blocks. The Sei Giga storage migration moves nodes to a new format optimized for the upcoming throughput targets.

- [Node Operations on Sei](https://docs.sei.io/node): Deploy and maintain Sei Network infrastructure with comprehensive guides for validators, RPC nodes, and archive nodes, including hardware requirements, installation steps, and operational best practices.
- [Sei Node Operations Guide](https://docs.sei.io/node/node-operators): Detailed guide for running and maintaining Sei nodes. Learn about configuration management, database maintenance, service management, and update procedures.
- [Configure Nodes with seictl](https://docs.sei.io/node/seictl): Install and use the seictl CLI to patch Sei node configuration and genesis files safely with merge-patch workflows.
- [Join the network using StateSync](https://docs.sei.io/node/statesync): Detailed guide for using statesync to join the network
- [Join the network using Snapshots](https://docs.sei.io/node/snapshot): Detailed guide for using snapshots to join the network
- [Node Types](https://docs.sei.io/node/node-types): Learn about different types of Sei nodes, their purposes, commonly used ports, and systemd configuration.
- [Troubleshooting](https://docs.sei.io/node/troubleshooting): Detailed guide for troubleshooting node problems.
- [Swagger API Documentation](https://docs.sei.io/node/swagger): Learn how to enable and access Swagger API documentation for your Sei node. Configure the swagger endpoint in app.toml and view interactive API docs.
- [Sei Validator Operations Guide](https://docs.sei.io/node/validators): Learn how to set up and maintain a validator node on Sei Network, including hardware security configuration, key management, monitoring practices, and governance participation requirements.
- [Sei Node Advanced Configuration & Monitoring](https://docs.sei.io/node/advanced-config-monitoring): Optimize your Sei node's performance with advanced system configurations, monitoring setup with Prometheus and Grafana, and effective alerting strategies for maintaining reliable node operations.
- [Giga SS Store Migration Guide](https://docs.sei.io/node/giga-storage-migration): Migrate a Sei RPC node to Giga SS Store: split EVM state into a dedicated state-store backend so non-EVM modules stop paying EVM write amplification.
- [Run frozen nodes for historical queries](https://docs.sei.io/node/frozen-nodes): Serve history from before a breaking upgrade: run a read-only frozen node on the outgoing seid release and route RPC requests to it by block height.
- [Sei Technical Reference](https://docs.sei.io/node/technical-reference): Access detailed command syntax, configuration parameters, and troubleshooting procedures for node operators and validators running Sei network infrastructure.

## Examples

### Deploy a contract with Hardhat

```javascript
// hardhat.config.js
module.exports = {
  solidity: "0.8.26",
  networks: {
    sei: {
      url: "https://evm-rpc.sei-apis.com",
      chainId: 1329,
      accounts: [process.env.PRIVATE_KEY],
    },
  },
};
```

### Query a balance with viem

```typescript
import { createPublicClient, http } from "viem";
import { sei } from "viem/chains";

const client = createPublicClient({ chain: sei, transport: http() });
const balance = await client.getBalance({
  address: "0xYourAddress",
});
console.log("Balance:", balance);
```

### Connect a wallet with wagmi

```typescript
import { http, createConfig } from "wagmi";
import { sei } from "wagmi/chains";
import { injected } from "wagmi/connectors";

export const config = createConfig({
  chains: [sei],
  connectors: [injected()],
  transports: { [sei.id]: http() },
});
```

## Resources

- [GitHub](https://github.com/sei-protocol): Open-source repositories, including sei-chain, sei-js, and the MCP server
- [Ecosystem](https://www.sei.io/ecosystem): Directory of projects building on Sei
- [Blog](https://blog.sei.io): Announcements and technical deep dives
- [Dashboard](https://dashboard.sei.io): Transfer, bridge, and stake on Sei