QuickRefine

AI-assisted English proofreading: grammar and punctuation fixes, tone smoothing, and explanations for each change so you learn while you edit.

Live site: quickrefine.com · Repo: github.com/mishamoix/QuickRefine

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Screenshots

The app centers on a Your draft editor (up to 600 characters), How it works, and Why writers use it sections, with Google sign-in for analysis.

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Features

• Structured feedback — Corrections with short explanations, rules, and examples (via generateObject + Zod schemas).
• Provider choice — Switch between Anthropic, OpenAI, or OpenRouter using LLM_PROVIDER and the matching API keys.
• Modes — Standard enhance and a fast path for quicker edits.
• Auth — NextAuth with Google OAuth; MongoDB adapter for session persistence.
• Observability — Optional Langfuse tracing for prompt and usage visibility.

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Tech stack

Layer	Tools
Framework	Next.js 16 (App Router)
UI	React 19, Tailwind CSS, DaisyUI
AI	AI SDK (@ai-sdk/openai, @ai-sdk/anthropic)
DB	mongodb / mongoose, @next-auth/mongodb-adapter
Auth	NextAuth.js

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Getting started

Prerequisites

• Node.js 20+ (recommended)
• MongoDB URI (Atlas or local)
• API keys for at least one LLM provider you plan to use
• (Optional) Google OAuth client ID and secret for sign-in

Setup

git clone https://github.com/mishamoix/QuickRefine
cd fix_english
npm install
cp .env.example .env

Edit .env and set:

• MONGODB_URI — database connection string
• NEXTAUTH_SECRET — random string (e.g. openssl rand -base64 32)
• NEXTAUTH_URL — e.g. http://localhost:3000 in development
• GOOGLE_ID / GOOGLE_SECRET — from Google Cloud Console OAuth credentials
• LLM_PROVIDER — anthropic | openai | openrouter
• One or more of: LLM_API_KEY, ANTHROPIC_API_KEY, OPENROUTER_API_KEY (see src/libs/llm.ts for which key each provider uses)
• (Optional) Langfuse keys and LANGFUSE_HOST if you use tracing

Run locally

npm run dev

Open http://localhost:3000.

Other commands

npm run build   # production build
npm run start   # run production server (after build)
npm run lint    # ESLint

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Project layout (high level)

• src/app/ — App Router routes, metadata, OG images, API routes (/api/enhance, /api/enhance/fast, /api/auth/[...nextauth])
• src/components/ — Landing sections (Hero, TextAnalyzer, HowItWorks, Features, …)
• src/libs/ — LLM client, MongoDB, NextAuth, Langfuse

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Support

Questions or feedback: quickrefine@bizarrefusion.com