I need my existing WordPress automotive theme to accept a UK number-plate or VIN, call a reliable vehicle-data API, and instantly pre-fill a new listing with the basic vehicle details—make, model and year. Right now the theme works well for manual entry, but I’d like to streamline it so customers can get their car online in seconds instead of typing everything themselves. I don’t yet have a preferred data source, so I’ll rely on you to suggest a trustworthy UK-specific API (DVLA-compatible, cap hpi, MotorCheck, etc.) and handle the key exchange, authentication and endpoint setup inside WordPress. PHP hooks, custom REST endpoints or a lightweight plugin are all acceptable as long as the integration survives core/theme updates. Once the data appears, users should be able to save or bookmark the result to their account so they can return later and finish or edit the listing. If the theme’s current user system needs small tweaks or custom tables, that’s fine—just keep everything within best-practice WordPress standards. Deliverables • Fully functioning search field or widget embedded in the theme (plate or VIN accepted) • API connection and mapping that autofills make, model, year into the listing form • User option to save / bookmark searched vehicles for later editing • Clear setup notes so I can move the integration to staging or production without breaking anything Acceptance criteria – Search returns correct vehicle details for at least 95 % of UK plates tested – No theme or core file edits; use child theme, plugin or hooks – Feature remains functional after a standard WordPress update If this sounds straightforward to you and you’ve handled DVLA or similar integrations before, let’s get started.