HTTP 402rate_limit

Monthly plan quota exhausted

limit_reached

What it means

The key owner's monthly free-plan quota is used up. Pro/Team/Trial accounts are unlimited.

Common causes

Free plan: 5 checks / 2 formula / 1 pathway per month.
All v1 calls count against the key owner's quota, regardless of how the key is provisioned.
`/v1/check/batch` rejects atomically — if the batch size exceeds remaining quota, the whole batch is rejected up front with 402.

How to fix

Upgrade at https://regcheck360.com/pricing.
Or wait until the quota resets at the start of the next calendar month (UTC).
Use `GET /api/v1/usage` to see current consumption and limits.

Example

// 402 response body (flat)
{
  "error": "limit_reached",
  "plan": "free",
  "usage": { "checks": 5, "formula": 0, "pathway": 0 },
  "limit": 5,
  "upgrade_url": "/pricing"
}