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Envio

Use Envio, a modular data indexing solution, to index Sei smart contract data. Envio has three products. You can use them individually or together, depending on 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, a fast RPC for data-intensive queries
If you are new to Envio, start with How to Index Sei Smart Contract Data in Minutes using Envio. This step-by-step walkthrough builds a USDC indexer on Sei in under five minutes.
Envio also supports Sei Testnet. HyperSync is at https://sei-testnet.hypersync.xyz, and HyperRPC is 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.
  • An indexing framework that transforms on-chain events into structured, queryable databases with GraphQL APIs
  • Configured with a YAML file, a GraphQL schema, and event handlers in TypeScript, JavaScript, or ReScript
  • Supports multichain indexing, real-time indexing, reorg handling, and factory (dynamic) contracts
  • Uses HyperSync for historical backfill

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HyperSync

Best for: new projects that design their own data access layer, performance-critical workloads, advanced filtering, and full control over data formatting.
  • A high-performance data retrieval layer, written from scratch in Rust as an alternative to traditional JSON-RPC endpoints
  • The raw blockchain data access layer that HyperIndex uses. It is up to 2000x faster than traditional RPC endpoints.
  • Client libraries for Python, Rust, Node.js, and Go
  • Query options that let you filter, select, and process exactly the data that you need
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.
  • A fast RPC designed 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. It 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 that you have installed the prerequisites. Then initialize a new indexer:
Follow the interactive prompts to customize your indexer for Sei. A minimal Sei config.yaml looks like this:
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

For help, contact the Envio team on Discord or Telegram.