Developers can support Prim+RPC by starring the repository, sharing with others, contributing code (either to the core or plugins), sponsoring the project, or following Ted, the creator of the project, for project updates. There is also a Security Policy that outlines the steps to take if there are any security issues.
If developers have any questions or are having trouble using Prim+RPC, there is an option to open a new discussion. The Contribution Guide details how developers can contribute to the project. Lastly, the License(s) link provides information on the licenses used in the project.