ESP CodexGauge v0.8.3

ESP CodexGauge v0.8.3 is the first public maker release of the standalone ESP8266 OLED quota gauge.

Highlights

• Displays remaining five-hour and weekly ChatGPT Work / Codex usage windows.
• Uses the direct device-login flow; no API key, server, proxy, or browser automation is required after setup.
• Stores the rotated refresh token and account ID in LittleFS for reuse after reboot.
• Shows reset times for empty quotas and performs a reset-aware refresh 30 seconds after a known reset.
• Keeps the last valid value visible during temporary failures and marks stale data instead of showing a misleading 0%.
• Supports SSD1306 128x32 OLED modules at I²C address 0x3C or 0x3D, with Serial-only fallback.
• Includes complete maker documentation for wiring, authentication, troubleshooting, contributing, and security.
• Includes a GitHub Actions compile check for esp8266:esp8266:d1_mini.

Build target

• Board: LOLIN(WEMOS) D1 R2 & mini
• FQBN: esp8266:esp8266:d1_mini
• ESP8266 Arduino Core: 3.1.2
• Serial Monitor: 115200 baud

Important notice

The project uses an undocumented ChatGPT/Codex backend endpoint that may change without notice. ESP CodexGauge is an independent community project and is not affiliated with or endorsed by OpenAI. Review the security documentation before sharing logs or deploying the device.