Team Bello - Bananalyze

Bananalyze – A Chrome extension that extracts and verifies claims in real time, ensuring accuracy with trusted sources—combats misinformation and makes AI-generated content reliable.

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HackED 2025 Devpost Submission - "Bananalyze"

Introduction: The Problem We’re Solving

“LLMs are powerful, but they hallucinate, making them unreliable for research. What if AI could fact-check itself?”
AI-powered tools like ChatGPT have revolutionized education, research, and professional workflows, but misinformation remains a critical issue. LLMs generate the most probable response—not necessarily the most factual one.

The Problem Statement

AI-generated misinformation spreads unchecked, affecting students, journalists, researchers, and professionals who rely on it for credible information.

Our Solution: The Bananalyze Chrome Extension

We developed Bananalyze—a chrome extension that instantly extracts verifiable claims from any text, fact-checks them using trusted sources, and labels them as True or False with a sourced explanation.

Key Features

  • Instant Fact-Checking – Just highlight text and click the popup to verify claims.
  • Real-Time AI Analysis – Uses OpenAI’s LLM to extract and categorize claims.
  • Trusted Sources – Pulls data from WHO, NIH, major news outlets, and scientific journals.
  • Seamless UI – Works across any webpage with a simple, intuitive design.
  • Transparency & Credibility – Shows source links, summaries, and trust ratings.

How It Works (Super Simple!)

  1. Highlight any text you want to fact-check.
  2. Click the pop-up banana indicator, and the extension does the rest.
  3. Get real-time results, including credibility ratings, explanations, and direct supporting sources.

Technical Breakdown

  1. AI Claim Extraction – Uses OpenAI to identify verifiable claims from user-highlighted text.
  2. Web Scraping & Source Verification – Pulls evidence from WHO, NIH, Google Scholar, and news sites.
  3. Claim Matching & Labeling – Program determines truthfulness based on verified data.
  4. Chrome Extension UI – Fetches instant results and displays them in a clean, user-friendly interface.

Tech Stack

  • Frontend – JavaScript, HTML, CSS (Chrome Extension)
  • Backend – Node.js, Express.js, Cors, dotenv, OpenAI
  • AI/ML – OpenAI GPT (LLM-based claim extraction)
  • Web Scraping – Google Custom Search API, Cheerio
  • Storage – Chrome local storage

Scalability & Future Plans

  • Expand Trusted Sources – Add peer-reviewed journals and fact-checking databases.
  • Bias Detection – Identify partisan or misleading narratives in AI-generated responses.
  • Academic Citation Checker – Verify citations in research papers and essays.
  • API Integration – Allow other LLMs to fact-check their own responses before outputting them.

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