A free, CORS-enabled version of the Pinboard public feeds API, but with a one hour cache
https://pinboard-api-cache.now.sh
Use the information at https://pinboard.in/howto/#api to see what methods are available, just replace the domain, like so: http://feeds.pinboard.in/rss/u:username/
with https://pinboard-api-cache.now.sh/rss/u:username/
.
https://pinboard-api-cache.now.sh/json/popular/
https://pinboard-api-cache.now.sh/json/u:mrmartineau/t:inspiration?count=15