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API Reference

Table of contents

GraphQL API

All GraphQL requests for queries, subscriptions and mutations are made to the GraphQL API.

All requests are POST requests to the /v1alpha1/graphql endpoint.

Request types

The following types of requests can be made using the GraphQL API:

  • Query / Subscription <query>
  • Mutation <mutation>

Schema / Metadata API

Hasura exposes a Schema / Metadata API for managing metadata for permissions/relationships or for directly executing SQL on the underlying Postgres.

This is primarily intended to be used as an admin API to manage Hasura schema and metadata.

All requests are POST requests to the /v1/query endpoint.

Request types

The following lists all the types of requests that can be made using the Schema/Metadata API:

  • Schema / Metadata API query types <Query>

Supported PostgreSQL types

You can refer to the following to know about all PostgreSQL types supported by the Hasura GraphQL engine:

  • Supported PostgreSQL types <postgresql-types>

Query / Subscription <query> Mutation <mutation> Schema / Metadata APIs <schema-metadata-api/index> Supported PostgreSQL types <postgresql-types>