🧠 Mini-RAG

Paste a document, ask a question — it retrieves the most relevant passages (TF-IDF + cosine), the core of Retrieval-Augmented Generation, in pure Python.

Document

# Northwind Goods — Customer Handbook (sample document)

## Shipping
We ship within 1–2 business days. Standard delivery takes 3–7 business days within the country.
We also ship internationally to most countries; international orders take 7–21 business days and
may be subject to customs duties paid by the customer.

## Returns and refunds
You can return any unused item within 30 days of delivery for a full refund. Items must be in
their original packaging. To start a return, email returns@northwind.example with your order
number. Refunds are processed to the original payment method within 5 business days of us
receiving the item.

## Warranty
All electronics come with a 12-month limited warranty covering manufacturing defects. The
warranty does not cover accidental damage or normal wear and tear. Keep your order confirmation
as proof of purchase.

## Payment methods
We accept major credit and debit cards, GCash, and PayPal. Payment is taken at checkout. We never
store your full card details — payments are handled by our PCI-compliant payment processor.

## Support hours and contact
Customer support is available Monday to Friday, 9am to 6pm. You can reach us by email at
support@northwind.example or through the live chat on our website. We aim to reply within one
business day.

## Accounts and privacy
You can shop as a guest or create an account to track orders. We never sell your personal data,
and you can request deletion of your account at any time by contacting support.

Question

Retrieval runs with no API key. A grounded answer appears too if the server has one set.

Built by Rolly Calma · zero-dependency RAG · source on GitHub