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Envio

Index Sei smart contract data using Envio, a modular hyper-performant data indexing solution. Envio offers three products you can use individually or together to fit your data needs on Sei.
  1. HyperIndex, a fully customizable blockchain indexing framework that powers GraphQL APIs over Postgres
  2. HyperSync, a real-time data retrieval layer up to 2000x faster than traditional RPC
  3. HyperRPC, an extremely fast RPC for data-intensive queries
New to Envio? Jump straight to How to Index Sei Smart Contract Data in Minutes using Envio for a step-by-step walkthrough that builds a USDC indexer on Sei in under five minutes.
FieldValue
Sei Chain ID1329
HyperSync URL Endpointhttps://sei.hypersync.xyz or https://1329.hypersync.xyz
HyperRPC URL Endpointhttps://sei.rpc.hypersync.xyz or https://1329.rpc.hypersync.xyz
Sei testnet is also supported, with HyperSync at https://sei-testnet.hypersync.xyz and HyperRPC at https://sei-testnet.rpc.hypersync.xyz.

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Choosing a Product

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HyperIndex

Best for: projects that need a complete indexing solution with schema management, event handling, and a GraphQL API.
  • A full-featured indexing framework that transforms on-chain events into structured, queryable databases with GraphQL APIs
  • Configured with a YAML file, a GraphQL schema, and TypeScript, JavaScript, or ReScript event handlers
  • Supports multichain indexing, real-time indexing, reorg support, and factory (dynamic) contracts
  • Powered by HyperSync for historical backfill

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HyperSync

Best for: new projects designing their own data access layer, performance-critical workloads, advanced filtering, and full control over data formatting.
  • A purpose-built, high-performance data retrieval layer, built from the ground up in Rust as an alternative to traditional JSON-RPC endpoints
  • The raw blockchain data access layer that powers HyperIndex, delivering up to 2000x faster performance than traditional RPC endpoints
  • Client libraries available for Python, Rust, Node.js, and Go
  • Filter, select, and process exactly the data you need with powerful query options
Common use cases include custom indexers, data analytics, block explorers, monitoring tools, cross-chain applications, and ETL pipelines.

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HyperRPC

Best for: drop-in replacements for existing RPC-based code, projects that need standard JSON-RPC interfaces, and teams without time for a deeper integration.
  • An extremely fast RPC designed specifically for data-intensive blockchain tasks
  • A specialized JSON-RPC endpoint optimized for data retrieval workflows
  • Drop-in compatible with existing tooling that uses standard RPC methods
  • Up to 5x faster than traditional nodes for data-intensive operations; uses HyperSync to fulfill requests
Common use cases include historical data queries, log event filtering, block and transaction retrievals, and analytics applications.

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Getting Started

Make sure you have installed the prerequisites, then initialize a new indexer. 
pnpx envio init
You’ll follow interactive prompts to customize your indexer for Sei. A minimal Sei config.yaml looks like this. 
name: IndexerName
description: Indexer Description
chains:
  - id: 1329 # Sei
    start_block: START_BLOCK_NUMBER
    contracts:
      - name: ContractName
        address:
          - "0xYourContractAddress1"
        events:
          - event: Event
For more detail on configuring chains, schemas, and event handlers, see the HyperIndex configuration guide and Indexing Sei on Envio.

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Built with Envio

  • Indexer Explorer, browse public real-time indexers built on Envio
  • Case studies, see real-world deployments and migrations
  • Showcase, explore live demos built with HyperIndex and HyperSync

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More Resources

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Support

Need help? Connect with the Envio team on Discord or Telegram.