What shipped

Every checkout session now places a ledger hold on the items in the cart. Holds release on payment, on abandonment, or after ten minutes, whichever comes first, so two customers can no longer race for the last unit.

• Holds are visible in the admin under each product's stock history.
• A new inventory.hold.released webhook fires when a hold expires.
• The hold window is configurable per store from one to thirty minutes.

The Go SDK joins Node, Python, PHP, and Ruby, with the same resource shapes and pagination. Every SDK now ships a webhooks.verify() helper, so checking a signature is one call instead of a hand-rolled HMAC.

Webhook payloads also carry a sequence number per store, which makes out-of-order delivery detectable on your side.

A single Mercury install can now serve several stores. Each store has its own domain, default currency, catalog, tax settings, and team, and can optionally share customer accounts and inventory with its siblings.

• Stock shared between stores is reserved from one pool, so a sale in one store lowers availability in the other instantly.
• Reports can be filtered by store or rolled up across the install.
• Cloud plans include three stores; further stores are $9 per month each.

Subscriptions create real orders on their schedule, so everything that already handles an order, from fulfillment to reports to webhooks, works for recurring revenue without changes.

Failed renewals retry on a configurable schedule and email the customer with a one-tap card update. Customers can pause or skip from their account page.

Mercury Cloud's hosted checkout is now served from twelve edge regions. Median time to first paint dropped from 610ms to 140ms worldwide, and time to paid fell to a 41-second median across all stores.

Self-hosted installs get the same checkout build and can put it behind their own CDN.