browser extension / chrome

💭

Second Thought

Think Twice, Build Wealth

$18,000/year

The average American loses this much to impulse purchases annually. E-commerce platforms use psychological tactics to exploit our cognitive biases. Second Thought helps you fight back.

install extension view on github

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WHAT IT DOES

Real-Time Intervention

Intercepts checkout attempts on major e-commerce sites and provides instant analysis before you buy.

AI-Powered Analysis

Uses Cerebras AI to analyze purchase necessity based on your financial profile and goals.

Opportunity Cost Calculator

Shows what your money could grow to if invested: 5, 10, and 20-year projections at 7% return.

Predatory Pricing Detection

Identifies fake discounts, urgency manipulation, and psychological tactics used by retailers.

24-Hour Cool-Down

Enforces a waiting period for non-essential purchases with reminder notifications.

Personalized Guidance

Tailored insights based on your financial goals, income, and savings targets.

HOW TO INSTALL

Download the Extension

Click the Install button above or clone from GitHub:

Open Chrome Extensions

Navigate to chrome://extensions/ in your Chrome browser.

Enable Developer Mode

Toggle 'Developer mode' in the top right corner.

Load the Extension

Click 'Load unpacked' and select the extension/ folder from the downloaded files.

Start Shopping Smarter

Visit any e-commerce site (Amazon, eBay, Walmart, etc.) and browse products. Second Thought will intervene when you try to checkout!

SEE IT IN ACTION

📱

Impulse Electronics Purchase

you

Browse Amazon for a $300 smartwatch

second thought

AI analysis: This seems like a want, not a need.

second thought

Opportunity cost: $1,161 in 20 years if invested.

second thought

Predatory tactic detected: Fake urgency (Only 3 left!)

second thought

24-hour cool-down activated.

result:You reflect, realize you don't need it. $300 saved. $1,161 in future wealth.

👟

Legitimate Purchase

you

Need to buy work shoes ($80)

second thought

Recognizes necessity based on your profile.

second thought

Shows opportunity cost but doesn't block.

second thought

Suggests checking for better deals.

result:You proceed with an informed decision.

🚨

Predatory Pricing Detection

you

Find '70% off' deal on clothing

second thought

Original price was inflated. This is a fake discount.

second thought

Urgency timer is manipulative.

second thought

Actual value is questionable.

result:You avoid the scam and save money.

MEASURABLE IMPACT

$1,800

Average Annual Savings

preventing just 10% of impulse purchases

$73,800

20-Year Investment Value

at 7% annual return

$100K+

Lifetime Wealth Impact

compound growth over time

HOW IT WORKS

Detection

Content script monitors e-commerce sites and extracts product details, prices, and urgency indicators.

Analysis

Sends product info to our API powered by Cerebras AI for instant analysis based on your financial profile.

Intervention

Displays a beautiful, non-intrusive panel with AI insights, opportunity cost, and predatory pricing warnings.

Protection

Activates 24-hour cool-down for non-essential purchases with reminder notifications.

Learning

Tracks your decisions and refines recommendations using Opik observability and LLM-as-judge evaluations.

Growth

Helps you build long-term wealth through better spending decisions, one purchase at a time.

BUILT WITH

Next.js 15TypeScriptCerebras AISupabaseOpik ObservabilityVitestProperty-Based TestingChrome Extension API

FOR DEVELOPERS

GitHub:github.com/AqilaTheBuilder/second-thought

Test Coverage:85 tests passing with property-based testing

BUILT FOR HACKATHON

Best Use of Opik

Comprehensive observability with full request tracing, LLM-as-judge evaluations, and experiment tracking.

Financial Health

Empowering better financial decisions through opportunity cost visualization and consumer protection.