# Hasura GraphQL API

The Hasura GraphQL Engine v2 provides instant realtime GraphQL APIs on your data with fine-grained access control. Supports GraphQL queries, mutations, and subscriptions at the /v1/graphql endpoint, along with RESTified GraphQL endpoints, Relay API, metadata API, schema API, config API, health check API, PG dump API, and explain API.

## Hasura GraphQL API

**Documentation:** https://hasura.io/docs/2.0/api-reference/graphql-api/index/

**References:**

- Documentation: https://hasura.io/docs/2.0/api-reference/graphql-api/index/
- APIReference: https://hasura.io/docs/2.0/api-reference/overview/
- Documentation: https://hasura.io/docs/2.0/api-reference/restified/

## Hasura DDN GraphQL API

The Hasura Data Delivery Network (DDN) is a metadata-driven API platform that generates instant GraphQL APIs on any data source. It provides queries, mutations, and subscriptions as root-level fields, with support for global IDs, API versioning, Apollo Federation, filtering, sorting, aggregation, and joins across multiple data connectors including PostgreSQL, MongoDB, ClickHouse, MySQL, Snowflake, Elasticsearch, and SQL Server.

**Documentation:** https://hasura.io/docs/3.0/graphql-api/overview/

**References:**

- Documentation: https://hasura.io/docs/3.0/graphql-api/overview/
- Documentation: https://hasura.io/docs/3.0/index/
- Documentation: https://hasura.io/docs/3.0/graphql-api/mutations/