hydra
v3
v3
  • Hydra
  • Hydra CLI
  • Hydra Indexer
  • Hydra Indexer Gateway
  • Hydra Processor
  • Hydra Typegen
  • Overview
    • Query Node Manifest
    • Graphql Queries
    • Pagination
    • Sorting
    • Mappings
      • Context interfaces
      • Mapping Filters
      • Mapping Types
    • Schema
      • The Goodies
      • Entities
      • Enums
      • Interfaces
      • Algebraic types
      • Full-text queries
      • Entity Relationships
      • Cross filtering
      • Variant relations
    • Architecture
  • Install Hydra
  • Migration to Hydra v2
  • What's new in Hydra v3
  • FAQ
  • Quickstart
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  • What's next?

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Overview

Introducing Hydra, a GraphQL query node for substrate chains

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Last updated 4 years ago

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Bird-eye overview

has two principal components: Hydra Indexer and Hydra Processor. Hydra Indexer ingests raw data from a substrate chain. Hydra Processor is responsible for transforming the raw data into domain-level entities as defined in schema.graphl and the event handlers, both provided by the user. hydra-cli provides additional scaffolding and codegen tooling for running and developing a Hydra Processor tailored for the provided schema file.

What's next?

Explore live Hydra Indexer and query Kusama events and extrinsics

Hydra toolkit

Hydra : spin a query node in under five minutes

Look at the

Learn how to define your own data and to run a Hydra Indexer

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Hydra
Hydra Indexer (top) and Hydra Processor (bottom) data flows