# SubQuery SubQuery is a leading blockchain data indexer that provides developers with fast, flexible, universal, open source and decentralised APIs for web3 projects. The SubQuery SDK allows developers to get rich indexed data and build intuitive and immersive decentralised applications in a faster and more efficient way. SubQuery supports 100+ ecosystems including Klaytn's EVM, Cosmos, Ethereum, Polygon, Polkadot, Algorand, NEAR, and Avalanche. Another one of SubQuery's competitive advantages is the ability to aggregate data not only within a chain but across multiple blockchains all within a single project. This allows the creation of feature-rich dashboard analytics or multi-chain block scanners. Other advantages include superior performance with multiple RPC endpoint configurations, multi-worker capabilities and a configurable caching architecture. To find out more, visit our [documentation](https://academy.subquery.network/). ## Getting started Take a look at this [SubQuery Starter Project](https://github.com/subquery/ethereum-subql-starter/tree/main/Klaytn/klaytn-starter) that introduces SubQuery's Klaytn support by indexing all transfers and approval events from the Orbit ETH on Klaytn Network . You can also follow along this [step by step guide](https://academy.subquery.network/quickstart/quickstart.html) to get familiar with SubQuery or check out the [Klaytn x SubQuery workshop](https://www.youtube.com/watch?v=40R5O1kL3v4) to see an actual demo. ## Running and Hosting your Klaytn SubQuery APIs SubQuery is open-source, meaning you have the freedom to run it in the following three ways: * Locally on your own computer, or a cloud provider of your choosing. View the instructions on how to run SubQuery locally [here](https://academy.subquery.network/run_publish/run.html). You can publish it to SubQuery's enterprise-level [Managed Service](https://managedservice.subquery.network/login), where we'll host your SubQuery project in production ready services for mission critical data with zero-downtime blue/green deployments. There even is a generous free tier. [Find out how](https://academy.subquery.network/run_publish/publish.html). You can publish it to the decentralised SubQuery Network, the most open, performant, reliable, and scalable data service for dApp developers. The SubQuery Network indexes and services data to the global community in an incentivised and verifiable way and supports Klaytn from launch. ## Resources Here are some additional resources to help you get started with the Covalent API: * [SubQuery Website](https://subquery.network/?utm_source=klaytn\&utm_medium=partner-docs) * [Documentation](https://academy.subquery.network/?utm_source=klaytn\&utm_medium=partner-docs) * [SubQuery Klaytn Support Announcement](https://subquery.medium.com/subquerys-data-indexing-supports-builders-on-klaytn-e5a3aec4bc14?utm_source=klaytn\&utm_medium=partner-docs) * [Klaytn Quick Start](https://academy.subquery.network/quickstart/quickstart_chains/klaytn.html/?utm_source=klaytn\&utm_medium=partner-docs) * [Klaytn Starter Project](https://github.com/subquery/ethereum-subql-starter/tree/main/Klaytn/klaytn-starter) * [Discord Support](https://discord.com/invite/subquery/?utm_source=klaytn\&utm_medium=partner-docs) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://archive-docs.klaytn.foundation/content/dapp/developer-tools/getting-started-2/subquery.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.