Auto-recharge

Auto-recharge is a sensitive feature: it lets HiWay charge a stored card on your behalf, off-session, without you clicking anything. Every safeguard is non-negotiable.

How it works

1. You enable it from Dashboard → Billing → Auto-recharge.
2. You add a card via Stripe Checkout (setup mode — the card is saved without a charge).
3. You set a trigger threshold (e.g. $5) and a recharge amount (between $10 and $1,000).
4. When your balance drops below the threshold after any request, HiWay fires an off-session PaymentIntent against your saved card.
5. On success, the credits are added to your balance and a Slack notification fires. Your account never goes empty.
6. On failure (card declined, expired, etc.), the recharge is logged as failed, you're notified, and after 3 consecutive failures auto-recharge is auto-disabled until you fix the card.

Safety guarantees

• Atomic Redis lock — even if 100 requests trigger a recharge at the same millisecond, only one fires.
• 5-minute cooldown between successful recharges — no thundering herd, no double top-up.
• Hard limits — single recharge amount is capped at $1,000. Above, you contact sales.
• Auto-disable after 3 failures — protects you from a runaway charge attempt loop.
• Owner-only — only you can enable, disable, or change your auto-recharge config. Admins cannot.
• Slack notification on every fire — you see every charge in real time.