subql

SubQuery is an open, flexible, fast, and universal data indexing framework for web3. It allows teams across multiple blockchain architectures to process and query their data, inspired by the growth of data protocols serving the application layer. The aim is to help web3 projects build better dApps by allowing anyone to reliably find and consume data faster. Today, anyone can query and extract blockchain data from various supported networks in only minutes and at no cost. The future is multi-chain, and SubQuery supports all leading blockchain networks, including Polkadot (and all Substrate networks), Ethereum (and all EVM-compatible networks), Cosmos (and all CosmWasm and Ethermint networks), Algorand, NEAR, Stellar (including Soroban), Solana (Beta), Starknet, and Concordium. Users can also index data from multiple networks in any combination of the SDKs. To get started, users can follow the Quick Start Guide to create, initialize, build, and publish a new SubQuery project using the `@subql/cli` tool. The comprehensive documentation covers every term, use case, and best practice. Users can publish their project to the decentralized SubQuery Network to benefit from a reliable, scalable, cost-optimized, and censorship-resistant indexing service without managing infrastructure. Alternatively, they can use managed hosting providers or run their own indexer and query service locally with a Postgres database and a node to extract chain data. SubQuery also offers an MCP (Model Context Protocol) integration in beta, providing the same functionality as the CLI but working well with LLMs and AI IDEs such as Cursor. The repository contains all core components of the SubQuery SDK, including `@subql/cli`, `@subql/node`, `@subql/node-core`, `@subql/query`, `@subql/common`, `@subql/common-substrate`, and `@subql/types`. Specific network implementations are in separate repositories, such as `@subql/node-ethereum`, `@subql/node-cosmos`, and others. There is also a Subgraph-compatible query service called `@subql/query-subgraph`. Support is available through Discord, X, Telegram, and YouTube. Contributions are welcome, and the project is built with love from the team at SubQuery in New Zealand.