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Build the future of payments

Explore our unified APIs, download language-specific SDKs, configure sandboxes, and read comprehensive documentation to integrate multi-PSP routing in minutes.

Core API Endpoints

Our RESTful API is structured around resource endpoints. All request bodies must be JSON, and API calls require Bearer token authorization in the HTTP headers.

POST/v1/checkout/sessions

Creates a checkout session configuration, sets up routing rules, and returns a session token for client-side hosted fields.

GET/v1/checkout/sessions/{id}

Retrieves the details and payment authorization status of a specific checkout session.

POST/v1/charges/refund

Triggers a programmatic full or partial refund. The refund is automatically routed to the original executing PSP.

POST/v1/routing/rules

Dynamically updates the routing configuration (PSP weights and failover conditions) without deploying code.

Interactive Request Console

cURLPOST/v1/checkout/sessions

# Request
curl -X POST https://api.payserv.com/v1/checkout/sessions \
  -H "Authorization: Bearer sec_live_51N8x..." \
  -H "Content-Type: application/json" \
  -d '{
    "amount": 1500,
    "currency": "usd",
    "routing_rule": "balanced_load",
    "success_url": "https://yoursite.com/success"
  }'

# Response (200 OK)
{
  "id": "cs_test_9238jds",
  "object": "checkout.session",
  "amount": 1500,
  "currency": "usd",
  "status": "open",
  "client_secret": "secret_982AJsda...",
  "created": 1781778183
}