One useful AI thing a day, from actual practice. No hype, no roundups of roundups.

Tool

Two Form Backends for When You Don't Want to Set Up Email Infrastructure

Video

Don't Let Your Banked Codex Usage Resets Expire

Prompt

The one-line prompt that saves your best model's tokens

Tool

How to Search Google’s Knowledge Graph Without Using the API Yourself

Note

ChatGPT 5.6: Sol, Terra, Luna, Effort-Levels: How to Pick the Right One?

Note

Why GEO Researchers Keep Studying Perplexity Despite Its 1.3% Web-Traffic Share

Prompt

How and when to use /compact in Claude Code