Check rate limits or refill tokens

Use this endpoint to either:

• Check if a user or resource can proceed (action: check).
• Refill tokens for multiple resource keys (action: refillTokens).

The API will return 200 whether a user is allowed or rate limited. You'll be able to check whether the user was rate limited from the result property. A separate 429 is used only when the developer account reaches their quota, if any.