NutriVerify

Fact check information about supplements seamlessly while online shopping via Chrome Extension

Built for Replit/SPC hackathon in April 2023

Demo Video: https://www.loom.com/share/ed3f2bd2f29b45f29a0be982a7dac51f

How to run this repo

1. Clone the repo locally

2. Start the backend server

   npm start

Navigate to localhost:3000/

3. Run the chrome extension

• Go to chrome://extensions
• Toggle "Developer mode" on
• Select load unpacked and open the extension folder from your local copy of this repo
• See your extension now running from the browser toolbar

Next Steps

[ ] Handle outstanding TODOs

[ ] Add more robust error handling

[ ] Add tests for API and Chrome extension

[ ] Convert Chrome extension to React to better handle state management, UI component organization

Project System Design

Problem Statement

The value of the global supplement industry is over 159 billion USD. Finding reputable information about supplements, meanwhile, is difficult and time-consuming. What if you could see fact-checked supplement info without leaving an online shopping web page?

With this question in mind, we propose creating a tool that solves for the following requirements:

Functional requirements:

• Users can view an overall confidence score based on:

  • Claim correctness by ingredient
  • Found potential supporting evidence
  • Found potential conflicting evidence
  • Unable to assess claim correctness

• Users can use the tool without copying any information from the online shopping page

• Users can view the sources used to generate the confidence score and the claims that were matched against them

• Users can input an OpenAI API key in order to generate GPT4

Non-functional requirements:

• Low latency: users need to get results quickly
• Reliability: the system should not give unexpected errors to give the best user experience
• Availability: the system should be highly available to give the best user experience
• Consistency: the system should provide consistent feedback about a given supplement provided the model is shown the same context window

Proposed Design (MVP)

Given the desire to provide easily accessible supplement information, a Chrome extension is the best way to provide this tool.

The flow is:

1. User goes to Chrome extension store and downloads extension
2. User inputs OpenAI API key with GPT4 access
3. User navigates to online shopping page for a supplement e.g. Amazon.com: Nature's Bounty Hair, Skin & Nails Rapid Release Softgels
4. Chrome extension reads the information on the page and sends it to a server running on localhost:3000

Server

• Decides whether or not information is pertaining to a supplement
• If yes, pulls supplement name and ingredients
• GPT4 determines what information constitutes “supplement claims”
• Sends supplement name and claims to GPT4
• Use axios to connect to external API for research articles
• Retrieves:
  • A claim-by-claim analysis of accuracy
  • A general safety review
  • [P2] A review of manufacturing claims
  • [Optional] Stores retrieved info in DB
• Returns retrieved to UI
• UI displays confidence score

Alternatives Considered

• Standalone webapp with no Chrome extension -> Did not go this route as it would introduce friction into users getting the information they need

• Out of Scope

• Page cache
• Supporting languages other than English
• Validating supplement facts in images and/or videos
• In-line validations (include if have time)
• User rating of response quality
• User feedback submission
• Monitoring and logging
• Support for GPT3