Rate limits and plans
Requests per minute, and what each plan includes.
Each key may make a set number of requests per minute, depending on the account’s plan.
See pricing for how many products and competitors each plan tracks.
When you reach the limit
The API answers 429 Too Many Requests with a Retry-After header giving
the seconds to wait:
Wait that long before retrying. A client that keeps retrying at once only stays limited.
Prices change at most as often as they are checked. Asking for the same listing more often than its check interval returns the same data.
Plan limits
Adding more listings than your plan allows answers 402 Payment Required,
because upgrading is what resolves it. Nothing already tracked is affected.