Developer-first, by design
Integrate once. Go live in weeks.
Clean REST APIs, a full sandbox, signed webhooks and a named integration engineer from day one.
POST /v1/payments
curl https://api.gsxsolutions.com/v1/payments \
-H "Authorization: Bearer $GSX_KEY" \
-d '{
"amount": 24850000,
"currency": "INR",
"method": "card",
"routing": { "strategy": "success_rate",
"failover": true }
}'Built by payments engineers, for payments engineers.
REST API & SDKs
One REST API for every product, rail and payment method.
Full sandbox
Test every product, including failures and retries, before you go live.
Signed webhooks
Real-time events for every state change.
Idempotent requests
Retry any request safely; it is never applied twice.
API reference
One API across every product.
POST /v1/routing/rulesPayment OrchestrationSee the requestPOST /v1/paymentsCard ProcessingSee the requestPOST /v1/walletsWallet InfrastructureSee the requestPOST /v1/settlementsBlockchain SettlementSee the requestPOST /v1/agentsAI Agent PaymentsSee the requestPOST /v1/payouts/batchesCollections & PayoutsSee the request
Go live in three steps.
01
Get sandbox keys
A 30-minute discovery call, then sandbox keys and a named engineer.
02
Build and test
Integrate against the full sandbox, including failure and retry cases.
03
Go live
Follow a go-live plan, with onboarding running in parallel.