JetEngine Query Builder custom type

Build a saved-query type as two coordinated components: a runtime query and an admin editor. Keep the runtime authoritative; editor controls, REST inputs, filters, and MCP-created settings are all untrusted input to that runtime.

When to use this skill

• Expose a custom table, service, or repository to Query Builder/Listings.
• Add query-type-specific editor controls.
• Diagnose abstract-class fatals after a JetEngine upgrade.
• Fix dynamic arguments, filters, cache, count, or pagination behavior.
• Make a custom type intentionally usable from saved-query REST or MCP tooling.

Architecture and registration

Use the same vendor-prefixed slug in both registrations.