README badge for AI coding-agent usage

I built `agent-badge` because most conversations about AI-assisted development stay abstract. Repos are either silent about it or use a vague sentence that never gets updated. I wanted a small OSS tool that could make usage more concrete at the README level.

So the tool is designed to publish aggregate badge data only. It does not publish prompts, transcripts, filenames, or local paths. Current support is Claude Code + Codex, and the cost shown is an estimate, not invoice-grade billing.

If you try it, the feedback I'd value most is around:

1. the attribution model

2. the privacy boundary

3. which sources / providers would matter next

Repo is here. Happy to answer implementation questions.