SubQuery enables better dApps by making decentralised data more accessible

SubQuery allows every Substrate/Polkadot team to process and query their data. The project is inspired by the growth of data protocols serving the application layer and its aim is to help Polkadot/Substrate projects build better dApps by allowing anyone to reliably find and consume data faster. Today, anyone can query and extract Polkadot network data in only minutes and at no cost.

SubQuery aims to support all Substrate-compatible networks.

The first, you need to create sample project with command: subql init sample

Then go to sample project directory and run yarn install to install all dependencies

After installation, change your project.yaml file, here is an example:

specVersion: 0.2.0
name: sample
version: 0.0.4
description: Cuong
repository: https://github.com/subquery/subql-starter
schema:
  file: /Users/trancuong/Sotatek/SubQuery/sample/schema.graphql
network:
  endpoint: wss://polkadot.api.onfinality.io/public-ws
  genesisHash: '0x91b171bb158e2d3848fa23a9f1c25182fb8e20313b2c1eb49219da7a70ce90c3'
dataSources:
  - kind: solana/Runtime
    startBlock: 97497290
    mapping:
      file: ./dist/index.js
      handlers:
        - handler: handleBlock
          kind: solana/BlockHandler

After that, you can run yarn codegen && yarn build to build the sample project

Then go to subql project, in root path of the project, run the following command:

yarn install
cd packages/types-solana && yarn build
cd ../common-solana && yarn build
cd ../node-solana && yarn build

# Yarn
yarn global add @subql/cli @subql/node @subql/query

# NPM
npm install -g @subql/cli @subql/node @subql/query

You can follow our Quick Start Guide to learn how to create, initialize, build, and publish a new SubQuery Project using the @subql/cli tool.

You'll need Typescript and Node.

Don't want to worry about running your own SubQuery nodes? SubQuery provides a managed hosted service to the community for free. Follow our publishing guide to see how you can upload your project to SubQuery Projects.

Follow our guide to run your own SubQuery local node that you can use to debug, test, and run you own GraphQL server

You're going to need to a Postgres database, a node to extract chain data, and a moderately powerful computer to run the indexer in the background.

You'll also use our custom-built GraphQL query service @subql/query to interact with your SubQuery project.

• @subql/cli
• @subql/node
• @subql/query
• @subql/contract-processors
• @subql/common
• @subql/types
• @subql/validator

For more documentation, visit doc.subquery.network

SubQuery is a project built with love from the team at OnFinality Copyright © 2021 OnFinality Limited authors & contributors