The Global Blacklist API is a project I created to allow services on Steem to access the blacklists offered by multiple providers.
The API supports the following blacklists:
- BuildAWhale
- Steem Cleaners
- Utopian
- MinnowBooster
- Redeemer-Irredeemables (new)
There is one endpoint to query and you can choose which blacklists you want to accept. As of November 20th, I have added support for Redeemer-Irredeemables list.
What is Redeemer-Irredeemables?
Redeemer-Irredeemables is a project by Steemit Inc to reclaim delegation to new accounts that have broken the Terms of Service and abused the faucet delegation handed out to new accounts. There are currently over 32,000 accounts on this list, all of which have had their 15 SP or more faucet delegation removed.
The Steemit Defense League (SDL) has over 202 accounts created using Steemit Inc faucet delegation which has been removed through the Redeemer-Irredeemables project.
How to use the Global Blacklist API?
Endpoint: http://blacklist.usesteem.com/user/
Example:* http://blacklist.usesteem.com/user/a-0-0
Result: {"user":"a-0-0","blacklisted":["steemcleaners","buildawhale","redeemer"]}
That's it, you can catch which blacklists a user is on by looking at the "blacklisted" result set. It will be empty if the user is not on any blacklist. Your application can decide which blacklists it wants to use.
The Global Blacklist API is a free service created and maintained by 
Want to see another blacklist added?
Let me know, and I will have a look. The best place to reach me would be Discord.