Mint a public badge token for your tenant

API key required. Mints a badge token (writ_badge_...) for the caller’s tenant and returns the badge image URL plus a ready-to-paste Markdown snippet. Embed the snippet in your README: the badge renders a live count of your tenant’s gated writes over the trailing 30 days, straight from your audit log.

The token is public by design — it lives in your README image URL — and grants nothing: it cannot be used as an API key (see the 401 below). It maps to your tenant server-side, so the badge image never leaks tenant IDs, keys, or receipt contents. The token is shown exactly once; store it — you need it to revoke the badge. Optional label (max 40 chars, [A-Za-z0-9 _.-]) is stored for your own bookkeeping and never rendered.