Paperfindr

Pay-per-download platform giving students and independent researchers affordable access to paywalled academic papers, billed in credits rather than a subscription.

Source stays with the client

Built with

Next.js
TypeScript
ElysiaJS
Bun
PostgreSQL
Better Auth

What it is

Paperfindr is a micro-credit platform for academic paper access, aimed at students and independent researchers who cannot justify per-paper publisher pricing and do not have working institutional access. Users top up a credit balance through a local payment gateway, then submit a DOI or article link; one credit is deducted per retrieval and refunded automatically when a fetch fails. The Next.js frontend covers authentication, the credit wallet, top-up, and download history, backed by an ElysiaJS API on Bun that queues retrieval jobs and reconciles gateway callbacks against the credit ledger.

What it does

Credit wallet with per-download deduction
Top-up through a payment gateway with webhook reconciliation
Retrieval by DOI or article link
Automatic credit refund when a retrieval fails
Download and transaction history
Email/password and Google sign-in
Queued jobs with client-side status polling
Admin panel for users and manual top-up

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