Plate Decoder

When the user provides a license plate number:

1. Extract the following from the user's message:

   • plate (required): the license plate number — if not provided, ask:

     "Please provide a license plate number."

   • country (required): ISO 3166-1 alpha-2 country code (e.g., US, AU, GB) — if not provided, ask:

     "Please provide a country code (e.g., US, AU, GB)."

   • state (required): 2-letter state/province code (e.g., CA, NY) — if not provided, ask:

     "Please provide a state code (e.g., CA, NY, TX)."

2. Do not call the API until all three fields are provided.

3. Make an HTTP GET request to the CarsXE Plate Decoder API:

   GET https://api.carsxe.com/v2/platedecoder?key={CARSXE_API_KEY}&plate={PLATE}&country={COUNTRY}&state={STATE}&source=codex_plugin
   

4. Present the results: vehicle Make, Model, Year, VIN (if returned), and registration info.

5. If the API key is missing, tell the user to set the CARSXE_API_KEY environment variable (see AGENTS.md).