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auth

Set and save the CarsXE API key. Use this when the user provides a CarsXE API key, asks to configure the plugin, or when the session starts without a key loaded.

plugins/carsxe/carsxe-codex-plugin/skills/auth/SKILL.md

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Nov 6, 2026
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Apache-2.0

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When the user provides a CarsXE API key or asks to configure the plugin:

1. Validate the key against the CarsXE API:
   ```
   GET https://api.carsxe.com/v1/auth/validate?key=<USER_PROVIDED_KEY>&source=codex_plugin
   ```
   - If valid: proceed to step 2.
   - If invalid: tell the user "That API key is invalid. Please check your key at https://api.carsxe.com/dashboard/developer" and stop.

2. Persist the validated key for future sessions by writing it to the plugin config file using Node.js:
   ```
   node -e "
     const fs = require('fs');
     const os = require('os');