What's the meaning of 403 Unauthorized when getting quote using LiFi API

[roto93]

I was testing LiFi API rate limit so I sent a lot of request from my dapp. Finally I got a 429 error which is expected. But later on every API calls are getting 403 error (see the screenshot below).
I'm not sure why this happened. Is my IP banned by LiFi?
As far as I know there is no API keys required so there should be no authorization.
And how can I get rid of this situation?

Here's the API call: https://li.quest/v1/quote?fromChain=288&toChain=288&fromToken=0x66a2A913e447d6b4BF33EFbec43aAeF87890FBbc&toToken=0xa18bF3994C0Cc6E3b63ac420308E5383f53120D7&fromAddress=0x113c14e0CF914E17325BBC5ceAF243583D4b965f&fromAmount=1000000&slippage=0.01

[chybisov]

@roto93 Hi, when you hit the rate limit but continue to send requests at some point you get a temporary ban 🙂 So the solution is either to reduce calls or to authenticate.