Please note that as of today we have decreased our rate limits to 500 requests per 10 seconds in Search and Data APIs. Please do consider these limits when you prepare your scripts. If the rates are exceeded the client will receive a 429 error code.
More generally, please always consider to keep rates as low as possible for your use case, and of course within the limits mentioned.
Best wishes
Jose
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Jose Duarte
RCSB PDB, UC San Diego