Your code drives more than your cloud bill: Datadog, Sentry and every dev tool that sends you an invoice. Dex connects your code with all of that usage data, finds the waste, and ships the fix as a pull request. Often a few lines.
More and more code gets written by AI agents, and almost none of it ever learns what it costs to run. That cost isn’t just compute: it’s the debug log in a hot path on your Datadog invoice, or the error flood eating your Sentry quota. We’re building the missing feedback loop, where usage and cost data from your cloud and dev tools flows back to wherever code gets written, by people or by agents. Here we share what we find in the wild: real fixes, real billing charts, and the occasional one-line change that saves thousands.