Sei Onchain Data API

Get token balances and transactions for Sei. 22 endpoints supported.

Overview

Sei is the first parallelized EVM, known for being extremely fast and processing multiple transactions at the same time.

GoldRush offers the most comprehensive Sei Data API suite for developers, analysts, and enterprises. Whether you’re building a DeFi dashboard, a wallet, a trading bot, an AI agent or a compliance platform, our Sei Data APIs provide fast, accurate, and developer-friendly access to the essential onchain data you need.

Supported APIs

Foundational API

Access structured historical blockchain data across 100+ chains using REST APIs. Get token balances, transaction histories, decoded event logs, NFT assets, token holders and more.

Use cases: Wallets, portfolio trackers, crypto accounting & tax tools, and DeFi dashboards.

Read docs

Mainnet

Property	Value
Chain Name	sei-mainnet
Chain ID	1329
Network Type	Frontier Chain
Support Level	frontier
Block Explorer	Explorer
Official Website	Sei Website
Native Gas Token	SEI

API Usage

To use this blockchain network in GoldRush API calls, use:

Chain Name

• sei-mainnet (mainnet)

Example API Calls

Chain Name (Mainnet)

curl -X GET "https://api.covalenthq.com/v1/sei-mainnet/address/0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045/balances_v2/?key=<GOLDRUSH_API_KEY>"

SDK Usage

TypeScript SDK (Mainnet)

import { GoldRushClient } from "@covalenthq/client-sdk";

const client = new GoldRushClient("<GOLDRUSH_API_KEY>");
const resp = await client.BalanceService.getTokenBalancesForWalletAddress({
    chainName: "sei-mainnet",
    walletAddress: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"
});

Foundational API Support

This chain supports 22 GoldRush Foundational APIs:

Wallet API

• Get token balances for address on Sei
• Get native token balance for address on Sei
• Get historical portfolio value over time on Sei
• Get ERC20 token transfers for address on Sei

Pricing API

• Get historical token prices on Sei

Security API

• Get token approvals for address on Sei

Transactions API

• Get a transaction on Sei
• Get transaction summary for address on Sei
• Get earliest transactions for address (v3) on Sei
• Get recent transactions for address (v3) on Sei
• Get paginated transactions for address (v3) on Sei
• Get bulk time bucket transactions for address (v3) on Sei
• Get all transactions in a block (v3) on Sei
• Get all transactions in a block by page (v3) on Sei

Block Explorer API

• Get a block on Sei
• Get all chain statuses on Sei
• Get all chains on Sei
• Get block heights on Sei
• Get gas prices on Sei
• Get log events by contract address on Sei
• Get log events by topic hash(es) on Sei
• Get logs on Sei

Additional Resources

• GoldRush API Documentation
• Supported Chains List
• API Reference