Introduction

What is a data connector?

A data connector is an HTTP service that exposes a set of APIs that Hasura uses to communicate with the data source. The data connector is responsible for interpreting work to be done on behalf of the Hasura Engine, using the native query language of the data source.

Data connectors, which are built to conform to the NDC Specification using one of our available SDKs, enable anyone to connect rich, highly-native data sources to their supergraph.

The NDC Specification defines a set of APIs that a data connector must implement. These APIs, which accept and return JSON, are used by Hasura to communicate with the data connector. The NDC specification also defines a set of metadata that the data connector must provide to Hasura. This metadata is used by Hasura to introspect the data connector, generate the GraphQL schema, and execute operations against the data source.

You can build your own data connector, or use one of the many connectors available on the Connector Hub.

There are two main types of connectors available for use in Hasura DDN projects: verified and non-verified connectors.

Verified connectors

Verified connectors are listed on the Connector Hub. These are deployable to Hasura DDN using the Hasura CLI.

Non-verified connectors

Non-verified connectors have not been verified by Hasura. These are only deployable on your own infrastructure.

What data connectors are available?

Browse the Connector Hub for an up-to-date list of all available connectors.