Skip to main content
Every API request must include two headers:
HeaderValueNotes
x-api-keyYour V3 API key (raw)Environment-specific.
x-timestampCurrent Unix time in millisecondsMust be within ±5 minutes of server time.
There is no request body signature — only these two headers.
  • Missing/invalid x-api-key → 401 Unauthorized.
  • Missing/malformed x-timestamp, or a value outside the ±5-minute window → 400 Bad Request ("Request timestamp outside valid window (5 minutes)").
  • Holding clients cannot use the payment/payout API → 403 Forbidden.
curl -X GET https://live.launcx.com/api/v3/payments/{id} \
  -H "x-api-key: {{your-v3-api-key}}" \
  -H "x-timestamp: {{unix_timestamp_in_milliseconds}}"