Sequence Real-Time Indexer

Sequence Real-Time Indexer is a multi-chain blockchain data API that delivers near-instant token balances, transaction history, contract events, metadata, and webhooks across all EVM chains — with no custom indexing setup required.

Product Overview

Built for developers who need reliable, high-performance blockchain data, the Sequence Indexer covers every ERC-20, ERC-721, and ERC-1155 token across all EVM-compatible networks. It is trusted by Google Cloud, Ubisoft, Immutable, Take Two Interactive, Arbitrum, Avalanche, Base, Polygon, QORPO World, and Xsolla.

Key Features

• Token balances — ERC-20, ERC-721, and ERC-1155 balances including native tokens, price data, and collectibles per account, fetched in under 300ms with a single API call
• Transaction history — Full transaction history and receipts with advanced filtering
• Contract events — Contract-specific and address-specific event logs with subscription endpoint support for real-time notifications
• Token and NFT metadata — Name, symbol, images, traits, attributes, and properties bundled with balance data
• Built-in USD price data — Price-aware balances included out of the box, eliminating third-party pricing dependencies
• Webhooks — Off-chain workflow triggers driven by on-chain contract events, configurable in minutes
• Spam token filtering — Automatic filtering of spam tokens from balance responses
• Token supplies — Supply data per token ID and per contract

Technical Specifications

• 99.99% availability SLA
• 3x faster response times than comparable indexing solutions
• Simple REST endpoints with optional SDK integration
• Covers every EVM network

Use Cases

Ideal for game developers building inventory and wallet UI, DeFi teams needing real-time portfolio data, NFT platforms requiring enriched metadata, and any product that needs on-chain event triggers for off-chain workflows.