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POST
/
pos
/
sessions
curl -X POST https://secureapi.gridlog.io/api/v1/pos/sessions \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "chain": "polygon",
    "token": "USDC",
    "localAmount": "37500.00",
    "localCurrency": "NGN",
    "expirySeconds": 600,
    "label": "Order #12345"
  }'

{
  "id": "123e4567-e89b-12d3-a456-426614174000",
  "chain": "polygon",
  "address": "0x1234abcd...",
  "token": "USDC",
  "amountExpected": "25.00",
  "status": "pending",
  "expiresAt": "2025-03-21T10:10:00.000Z",
  "label": "Order #12345"
}

Documentation Index

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This endpoint supports both API key (X-API-Key header) and Bearer token (Authorization: Bearer <JWT>) authentication. Generates a deposit address and payment session. The customer sends crypto to the returned address to complete the payment.
​
chain
string
required
Blockchain network (e.g., "polygon", "ethereum", "solana")
​
token
string
required
Token to accept. One of: "USDC", "USDT"
​
localAmount
string
required
Amount in local fiat currency (e.g., "37500.00" for NGN)
​
localCurrency
string
ISO currency code for localAmount (e.g., "NGN", "KES", "GHS")
​
amount
string
Amount in cryptocurrency. Provide this or localAmount — not both.
​
expirySeconds
number
Session expiry in seconds (default: 600)
​
label
string
Optional human-readable label (e.g., "Order #12345")
curl -X POST https://secureapi.gridlog.io/api/v1/pos/sessions \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "chain": "polygon",
    "token": "USDC",
    "localAmount": "37500.00",
    "localCurrency": "NGN",
    "expirySeconds": 600,
    "label": "Order #12345"
  }'

{
  "id": "123e4567-e89b-12d3-a456-426614174000",
  "chain": "polygon",
  "address": "0x1234abcd...",
  "token": "USDC",
  "amountExpected": "25.00",
  "status": "pending",
  "expiresAt": "2025-03-21T10:10:00.000Z",
  "label": "Order #12345"
}
​
id
string
Unique session ID
​
address
string
Deposit address — display this (or a QR code of it) to the customer
​
amountExpected
string
Exact crypto amount the customer must send
​
status
string
Session status: pending | paid | paid_out | expired | cancelled
​
expiresAt
string
ISO 8601 timestamp when the session expires
Poll Get Session or listen to webhooks to detect when a payment lands.