Keep Your Platform Safe & Clean

Profanity Filter API.

Detect and filter profanity in real-time. Get word counts and auto-censored versions of text with customizable mask characters. Essential for community platforms, chat applications, and user-generated content.

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Free tier, no card< 200ms responses99.9% uptime SLA

GET/v1/profanityfilterlive

query

Response200 OK · sample

{
  "status": "ok",
  "error": null,
  "data": {
    "isProfane": true,
    "filteredText": "Today is so **** hot! Why the **** would anyone go outside?",
    "mask": "*",
    "trimmed": false,
    "profaneWords": 2
  }
}

Sample response · verify to run one live call, no signup

How it works

Profanity Filter API

Multi-language profanity detection (20+ languages)
Customizable mask characters for censoring
Real-time spam and bot detection
Username validation and generation

1
Send one request
A single authenticated GET with the location you care about — no SDK required.
```
GET /v1/profanityfilter?query=…
x-api-key: your_key
```
2
We do the aggregation
Each request pulls from multiple upstream sources and computes the derived fields for you.
3
Get clean JSON back
One structured object, typically under 200 ms — ready to render.
```
{ isProfane, filteredText, mask, … }
```

The response

Everything in a single call.

/v1/profanityfilterapplication/json

isProfanetrue

filteredText"Today is so **** hot! Why the **** would anyone go outside?"

mask"*"

trimmedfalse

profaneWords2

Use cases

What developers build with it.

Real applications shipping on this endpoint today — each with the numbers that made it worth wiring up.

See every use case

Real-Time Chat & Messaging Moderation

Our Profanity Filter API checks messages in under 100ms, perfect for real-time chat. Get word counts and auto-censored text before it reaches other users.

Sub-100ms response for real-time useProfanity word count for moderation logicCustomizable mask character

< 100msresponse time

20+ languagesprofanity detection

80% reductionin toxic content

User-Generated Content Moderation

Integrate our API into your content pipeline to screen posts, reviews, and comments before they go live. Flag or auto-reject content based on severity thresholds you define.

Pre-publish content screeningCustomizable severity thresholdsProtect brand reputation

90% lessmanual moderation

Protectbrand reputation

Instantcontent screening

Game Chat & Username Filtering

Use our Profanity Filter for real-time chat moderation and Username Profanity API to block inappropriate player names during registration. Catch leetspeak and creative bypasses.

Catch leetspeak variations (a$$, sh1t)Real-time game chat filteringUsername validation at signup

Block 95%of inappropriate usernames

Catch leetspeakand creative bypasses

Safer communityhigher retention

Start coding

Call it in your language.

Copy a working request, or install a typed SDK. Same endpoint, same key.

const res = await fetch("https://api.apiverve.com/v1/profanityfilter", { method: "POST", headers: { "x-api-key": "YOUR_API_KEY" } });
const { data } = await res.json();
console.log(data);

Included in your key

One subscription, the whole keep your platform safe & clean stack.

Every related API ships with your key — no separate plans, no extra keys, one bill.

See pricing

8APIs in this bundle

99.9%uptime SLA

The bundle

profanityfilterYou’re hereusernamegenerator spamdetector usernameprofanity sentimentanalysis languagedetector readabilityscore textsummarizer

No code required

Wire it into the tools you already run.

Ready-made recipes for Zapier, Make, and n8n — trigger on an event, and the data lands where your team works.

Google Sheets

Screen text entries for profanity

WhenNew row added with text

ThenFilter profanity → update row with result

Slack

Alert on profane user submissions

WhenNew submission (via webhook)

ThenFilter profanity → post alert if isProfane

Airtable

Moderate user-generated content records

WhenNew record created

ThenFilter profanity → populate fields

Notion

Screen wiki entries for profanity

WhenNew database item created

ThenFilter profanity → update status property

Salesforce

Moderate case descriptions

WhenNew case created

ThenFilter profanity → update custom field

GitHub

Screen issue comments for profanity

WhenNew issue comment

ThenFilter profanity → add label if profane

Browse all integrations

Learn

Understand the data behind the API.

Content Moderation Strategies

Approaches to moderating user-generated content at scale.

How Profanity Detection Works

Understanding profanity filtering techniques and their limitations.

Spam Detection and Prevention

Identifying and blocking spam, bots, and low-quality content.

Questions about the API

What languages does the profanity filter support?

Our profanity filter supports 20+ languages including English, Spanish, French, German, Portuguese, and more. We continuously update our word lists.

Can I add custom words to filter?

Yes! Premium plans allow you to add custom blocklists and allowlists to tailor the filtering to your community standards.

How does spam detection work?

Our spam detector uses machine learning to analyze text patterns, link density, repetition, and other signals to identify spam with high accuracy.

Is the API suitable for real-time chat moderation?

Absolutely. Our APIs have sub-100ms response times, making them perfect for real-time chat, comments, and live content moderation.

Is there a free tier available?

Yes! The free tier includes 1,000 API calls per month for development and testing purposes. Commercial use requires a paid plan. Check our pricing page for details.

Can you detect leetspeak variations?

Yes! Our filter catches creative spellings like a$$, sh1t, and f**k by normalizing text and using pattern matching to identify profanity regardless of spelling tricks.

What are the rate limits?

Rate limits vary by plan. Check our pricing page for details. Our plans support high-volume moderation with sub-100ms response times for real-time use.

How do you handle false positives?

Our filter aims to minimize false positives using context-aware detection. Premium plans offer allowlist customization to whitelist specific terms for your use case.

How does the profanity count help with moderation?

The API returns a count of profane words detected. You can use this to implement tiered moderation—for example, auto-censor single instances but flag content with multiple violations for review.

Do you provide auto-censored text?

Yes! The API can return auto-censored versions of text with profanity replaced by asterisks or your custom replacement character.