With the deprecation of the Get create issue metadata endpoint and the introduction of the two replacements

• Get create metadata issue types for a project
• Get create field metadata for a project and issue type id

One call has been decomposed into many calls if a site has many Issue Types for a Project. As a result making these calls often results in being Rate Limited on larger sites.

This Suggestion is to request a way to get all Fields of a Project in one REST API call. This could be by one of

1. Providing an &expand= query parameter to Get create metadata issue types for a project that returns Field information
2. Providing a new endpoint between the two new ones /rest/api/3/issue/createmeta/{projectIdOrKey}/issuetypes/ that returns the fields and other data for one Project.
3. Providing query parameter for https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issue-fields/#api-rest-api-3-field-search-get and also providing project information in the payload, similar to what Jira DC do for their equivalent endpoint.