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Developer API

Integrate enterprise blockchain liquidity directly into your corporate treasury with our RESTful endpoints.

Core Reference

Authentication

All API requests must be authenticated via Bearer Token generated from your Institutional Dashboard. Requests hitting the api.slonpay.com/v1 endpoint without a header will return a 401.

Retrieve Balances

Fetch available liquidity across multiple networks supported by your account.

GET /v1/treasury/balances

// Response (200 OK)
{
  "status": "success",
  "data": {
    "total_usd_value": "4_520_150.00",
    "assets": [
      { "coin": "USDC", "chain": "Ethereum", "balance": "1500000.00" },
      { "coin": "USDT", "chain": "Tron", "balance": "2000000.00" },
      { "coin": "ETH", "chain": "Ethereum", "balance": "285.50" }
    ]
  }
}

Create Cross-Border Transfer

Initiates an immediate settlement using the smart-routing protocol. The transaction is instantly finalized natively if both parties are on the SlonPay ledger.

POST /v1/settlements/execute

// Request Payload
{
  "asset_id": "usdc_eth",
  "amount": "125000.00",
  "recipient": {
    "destination_address": "0x5A0b...3F1d",
    "kyc_reference": "req_8819xHj"
  },
  "idempotency_key": "trx_9018247912"
}

// Response (201 Created)
{
  "transaction_id": "slon_59182xyz",
  "status": "processing_l2",
  "estimated_finality_ms": 1450
}

Register Webhook

Listen asynchronously for transaction confirmations to prevent long-polling.

POST /v1/webhooks/register

// Request Payload
{
  "url": "https://your-server.com/slonpay/callbacks",
  "events": ["settlement.completed", "balance.updated", "kyc.approved"]
}