insufficient_credits
HTTP 402 · billing_error
Account balance is too low for this operation.
You are not charged for this error. JustAPI only ever bills a completed job whose output was smaller than its input — never a request that failed, regardless of whose fault it was.
What to do
Top up the balance, or raise that key's spend cap.
Response shape
{
"error": {
"code": "insufficient_credits",
"message": "<details for this specific request>",
"type": "billing_error",
"doc_url": "https://justapi.tech/docs/errors/insufficient_credits/",
"request_id": "req_..."
}
}