For example, let's say we feed in this content:

    "title" : "Bitcoin drops 20% after $70M worth of bitcoin was stolen from Bitfinex exchange"
    "body" : "Bitfinex, one of the most popular cryptocurrency exchanges online, has suffered a major hack. The company has posted a note on its website detailing the security breach, and while it doesn’t mention a total amount, one of their employees confirmed on Reddit that the total amount stolen was 119,756 bitcoins."

Note, this format is arbitary. The service/API/library will take this data, scan it and assign topic tags such as Bitcoin, Crypto Currency, Blockchain, & Bitfinex.

Is there such a thing available to people who can't really build their own?

  • 1
    This format is arbitrary. I assume that it will be JSON, just not a fixed structure?
    – user416
    Commented Aug 3, 2016 at 18:33
  • 1
    What is the subject area? You cannot expect any API to cover all the worlds topics. It would have to return every noun and name.
    – user416
    Commented Aug 3, 2016 at 18:34
  • What I meant was that the format can be anything. I am not picky about that. And subject area... well I guess the broader the better cause I want this system to tag articles from a broad range of topics.
    – darkhorse
    Commented Aug 3, 2016 at 18:49
  • What would the library need to be created in/compatible with?
    – Tom
    Commented Aug 4, 2016 at 3:04
  • Should compatibility really be an issue here? I mean I could feed the service data in any format it wants, and I could convert the returned data to my personal format as well. And its going to be JSON anyway most likely, if such a service exists that is.
    – darkhorse
    Commented Aug 4, 2016 at 9:23

1 Answer 1


Check out Open Calais. Here is the result I get from your proposed body:

Topics: Technology Internet 84% Labor 82% Business Finance 65%

Social Tags: Bitcoin Cryptocurrency Reddit

I'm searching for something really similar to you but I think this is exactly what you need.

  • Thank you. This seems like the only viable option.
    – darkhorse
    Commented Aug 11, 2016 at 17:57

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