Sift Ninja Features

The quickest, cleverest and most accurate filter for unmoderated content. Language isn’t black and white so your filter shouldn’t be either.

The Smartest Content Filter on the Internet

Sift Ninja, at it's core, is a text classification system to identify and label content that people create online. It understands patterns of behaviour, like bullying or sexting.

How does it work?

Sift Ninja is an API service that integrates with chat, comments, gaming and other social applications.

Topics, like bullying or sexual harassment, are detected and assigned a risk level. Messages are decorated with this metadata (topics and risk levels) and sent back. Your platform then decides, based on it’s own rules, what to do next.

Auto-moderate, hash out profane words, mark as NSFW, and so on, our service allows for a range of expression that can fit any community.

Use Sift Ninja just about any-f@&king-where.

With our API, you can use Sift Ninja anywhere you need to protect social interactions. Games, apps, mobile, bots, etc.

Sift Ninja API

We're working on SDK's, plugins and code-less integrations.



Facebook — coming soon

Yeah, right. Of course you don't have a problem.

Is your old-school profanity filter enough? How much do you understand about your community?

Free Report Card

Learn how toxic your users are in minutes.

Text classification — More advanced than blacklisting & whitelisting.

  • Accurate in multiple languages
  • Real-time dashboard reporting
  • Fast & simple setup
  • Best-in-class technology for text classification
  • Instant filtering based on a sliding scale — from low risk to severe
  • API-based service works with any platform
  • Install on multiple platforms at once

What can Sift Ninja Protect Against?


Bullying or cyberbullying is defined as “the act of harming or harassing via information technology networks in a repeated and deliberate manner.”


Vulgarity is defined as any comments that are lewd, crude and use profanity in a general sense but not inherently targeted at a person or a group of people.


Sexting refers to any attempt by users to send and/or receive sexually explicit messages or discuss child pornography.


Hate Speech refers to any speech that attacks a person or group on the basis of of personal attributes or identities.


Violence and fighting functions as an auxiliary topic that will identify and remove instances of this chat in your community.


Personal Identifying Information (known as PII), is information shared online that can be used to identify someone in real life.

Languages Supported:

All implementations of Sift Ninja include english.

  • English

Other languages we support are dependent on how you use Sift Ninja. Please enquire:

  • French
  • Spanish
  • Portuguese
  • Russian
  • German
  • Italian
  • Japanese

Handles l33t speak and filter bypass tricks.

Our system automatically looks for hidden letters and numbers and even characters from other languages. We have also built out thousands of unique rules to account for subversive manipulations.

Get Started — No credit card required.

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How Sift Ninja Works

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