text-classifier

name	Text Classifier
slug	text-classifier
description	Classify text into predefined or custom categories. Use when agents need to route tickets, moderate content, categorize emails, or tag documents. Uses keyword matching and TF-IDF scoring. No external API needed.
category	NLP
tags	["classification","nlp","text-analysis","categorization","content-moderation"]
price_per_call	0
input_schema	{"type":"object","properties":{"text":{"type":"string","description":"Text to classify (10-50,000 chars)"},"categories":{"type":"object","description":"Optional custom categories map {category: [keywords]}. Uses predefined if omitted."}},"required":["text"]}
output_schema	{"type":"object","properties":{"category":{"type":"string","description":"Top predicted category"},"confidence":{"type":"number","description":"Confidence score 0-100"},"top_categories":{"type":"array","description":"Top 3 categories with scores"}}}
metadata	{"requires":{"env":["CLAW0X_API_KEY"]}}

Text Classifier

Classify text into categories using keyword matching and TF-IDF scoring. Supports 8 predefined categories (technology, business, science, health, sports, politics, entertainment, education) or custom categories you define.

How It Works

1. Tokenize input text, remove stop words
2. Match against category keyword lists
3. Score using term frequency relative to text length
4. Return top category with confidence and ranked alternatives

Use Cases

• Content moderation (flag inappropriate content)
• Ticket routing (assign support tickets to teams)
• Email categorization (inbox triage)
• Document tagging (auto-label content)
• News classification (topic detection)

Prerequisites

1. Sign up at claw0x.com
2. Create API key in Dashboard
3. Set environment variable: export CLAW0X_API_KEY="ck_live_..."

Pricing

FREE. No charge per call.

• Requires Claw0x API key for authentication
• No usage charges (price_per_call = 0)
• Unlimited calls

Example

Input:

{
  "text": "The new GPU from NVIDIA delivers 2x performance for machine learning workloads, making it ideal for training large language models."
}

Output:

{
  "category": "technology",
  "confidence": 85,
  "top_categories": [
    {"category": "technology", "score": 12.5},
    {"category": "business", "score": 2.1},
    {"category": "science", "score": 1.8}
  ]
}

Error Codes

Code	Meaning
400	Text too short (<10 chars) or too long (>50K)
401	Missing or invalid API key
500	Classification failed (not billed)

About Claw0x

Claw0x is the native skills layer for AI agents.

GitHub: github.com/kennyzir/text-classifier