Limits and errors

HENMESH rejects calls when a plan meter is empty or the key is unknown. Read HTTP status, then error and meter.

• 401 — missing, unknown, or deactivated hmk_ key.
• 403 with QUOTA_EXCEEDED — automation or product meter is empty.
• 400 — payload field missing or unusable.
• 202 — long solve queued; poll jobs.

Keys are product-specific. A HENFOIL hfk_ key does not call HENMESH. Create a HENMESH key from HENDOI Settings → Generate API key for HENMESH.

{
  "error": "API usage limit reached.",
  "meter": "apiRequests",
  "code": "QUOTA_EXCEEDED"
}