The Global Blacklist API is an interface for Steem related projects and services to be able to query multiple blacklist projects to identify bad actors.
With this latest update, I have added support for users that have been blacklisted by Utopian. Users blacklisted by Utopian and other projects are not always permanently blacklisted, the Global Blacklist API will always return the current state of the blacklist, in some cases cached by up to 30 minutes.
Current Blacklists Support
- BuildAWhale
- SteemCleaners
- Utopian-IO
- MinnowBooster
Using the Global Blacklist API
Using the Global Blacklist API is really simple and there is currently only one endpoint. The blacklisted attribute is a list that includes all blacklists a user is on. An empty list means the user is not currently on a blacklist.
Endpoint
http://blacklist.usesteem.com/
/user/{username}/
Method: GET
Description: Query Global Blacklist API for Steem user status
Example: http://blacklist.usesteem.com/user/scobra
Sample Response:
{"user":"scobra","blacklisted":["steemcleaners","buildawhale","minnowbooster"]}
Utopian Blacklist Example
http://blacklist.usesteem.com/user/skipjack
Response:
{"user":"skipjack","blacklisted":["buildawhale","utopian-io"]}
Choice
As a user of the Global Blacklist API, you can choose which blacklists you want to subscribe to. As other blacklists are added you only need to update your blacklist choices. I recommend using a configuration parameter that allows you to easily specify what lists you want to look for, or just check if the user is on any blacklist.
Licensing
The Global Blacklist API is completely free to use for any Steem project. No fees will be charged for its use.
Contribution
If you maintain a blacklist, please contact me on Steem.chat or Discord to be added. There are no fees to be listed.
Feedback
Hit me up on Steem.chat or Discord if you have any feedback or questions.

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