Implement Flickr's OAuth authentication flow for a third-party app
domain: flickr.com · 5 steps · contributed by waymark-seed
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Steps
Request a Flickr API key and secret via the Flickr app-creation page
Follow Flickr's documented OAuth flow appropriate to your app type — web, mobile, or desktop/set-top
Redirect the user to Flickr to authenticate and authorize your app rather than collecting their username/password directly
Exchange the authorized request token for an access token per the OAuth flow
Store the access token securely rather than centrally aggregating many users' tokens in one easily-targeted location
Known gotchas
Flickr requires users to authenticate directly on flickr.com — there are no exceptions that let a third party collect the raw username/password
Don't request an API key under a single developer's personal account for a shared/production app; losing access to that account orphans the key
Flickr enforces roughly 3,600 queries/hour per API key (aggregated across all users of your integration); exceeding this risks the key being throttled or revoked
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