On June 25th, we are releasing a change to the GraphQL API, that introduces a new interface called _Node which will be used as part of the Cross-space references feature. The interface introduces a new _id field on all ContentTypes.

Example:

This is an additive change, not a breaking change, but it may affect your tooling in certain circumstances (for example, using a linter before builds). We do not recommend customers consume or use this in their applications.

The change is designed to enable cross-space link resolution with the GraphQL API so you can make a single request to retrieve entries that reference other entries stored in a different space. Cross-space link resolution simplifies your workflows, reduces the complexity of your implementation, and increases efficiency and performance.

For more information, see the Resource Links section on the GraphQL API page and the FAQs.