Let your promotions
flow.
Vouchers, referrals, gift cards & flash sales —
one API, zero drama.
curl https://api.vauchflow.com/v1/vouchers \
-H "Authorization: Bearer vf_sk_••••" \
-d '{"code":"SAVE20","discount_type":"PERCENT","discount_value":20}'
// Response
✓ 201 Created
{ "id": "vch_01HX...", "code": "SAVE20", "status": "active" }Features
Everything your promotions need.
Nothing they don't.
Voucher engine
Single codes, bulk batches up to 50k, expiry rules, and atomic redemption limits.
Referral codes
Reward both referrer and referee. Block self-referral. Track attribution cleanly.
Gift cards
Stored value with partial redemption support. Isolated from your payment path.
Flash sales
1,000+ req/s via Redis atomic counters. PostgreSQL stays the system of record.
Multi-tenant
One account, many clients. Row-Level Security isolates every tenant at the DB.
Atomic redemptions
Never over-redeemed. Enforced by an atomic SQL UPDATE + DB CHECK constraint.
How it works
From zero to voucher in 5 minutes.
Get your API key
Sign up free. Generate a secret key in seconds from the dashboard.
curl https://api.vauchflow.com/v1/api-keys \
-H "Authorization: Bearer vf_sk_••••"
# { "key": "vf_sk_abc123...", "type": "SECRET" }Create a campaign
Define rules: discount type, expiry, usage limits, eligible segments.
POST /v1/campaigns
{
"name": "Summer Sale",
"type": "DISCOUNT",
"rules": { "discount_value": 20,
"max_redemptions": 500 }
}Issue & redeem vouchers
Generate codes in bulk or on demand. Redeem atomically — never over-redeemed.
POST /v1/vouchers/SAVE20/redeem
{
"customer_id": "cust_xyz",
"order_value": 89.99
}
# { "discount_applied": 18.00, "status": "redeemed" }Watch the analytics flow
Redemption rates, discount liability, fraud alerts — all in your dashboard.
GET /v1/analytics/overview
{
"active_campaigns": 3,
"redemptions_today": 142,
"top_code": "SAVE20"
}Pricing
Let your revenue flow, not your budget.
Start free. Scale when you're ready. No surprises.
Overage: €0.003 per additional API call · €0.005 per additional redemption
Up to 83% cheaper than Voucherify. Seriously.