Reference
Errors
LeadsFriday uses standard HTTP status codes and structured JSON error bodies.
400
Invalid request
Missing or malformed request fields.
401
Unauthorized
Token is missing, expired, revoked, or invalid.
403
Forbidden
Insufficient credits or unavailable service.
404
Not found
Order or endpoint was not found.
409
Conflict
Duplicate or conflicting request.
429
Rate limited
Retry after the provided delay.
500
Server error
The request failed on our side; inspect before retrying.
Error response
{
"code": "validation_error",
"detail": "Contact count must be at least 500.",
"fields": { "contact_count": ["Minimum value is 500."] }
}