For completeness, I'm updating this post with the latest info: a JSON libname engine is now in Base SAS 9.4 (maint 4).
Example:
filename resp temp;
/* Neat service from Open Notify project */
proc http
url="http://api.open-notify.org/astros.json"
method= "GET"
out=resp;
run;
/* Assign a JSON library to the HTTP response */
libname space JSON fileref=resp;
/* Print result, dropping automatic ordinal metadata */
title "Who is in space right now? (as of &sysdate)";
proc print data=space.people (drop=ordinal:);
run;
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