applyfst

Tailor your resume to any job in 10 seconds. Open-source, fork-it-and-ship template.

Paste a job description + your resume → get a tailored, ATS-friendly resume + a custom cover letter back, streamed live. One API key. No database. No auth. Pure AI SDK + Next.js + Tailwind.

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Quickstart

git clone https://github.com/dabhiram13/applyfst.git
cd applyfst
cp .env.example .env.local        # add your AI_GATEWAY_API_KEY
npm install
npm run dev

Open http://localhost:3000.

That's it. One env var, no database, no migrations, no Supabase setup.

Get your API key

Grab a free AI_GATEWAY_API_KEY from vercel.com/ai-gateway — it routes to OpenAI, Anthropic, Google, Mistral, and dozens of other providers through one key.

Swap the model

Default model is openai/gpt-4o-mini. To swap, edit one line in app/api/tailor/route.ts:

const result = streamText({
  model: "anthropic/claude-haiku-4-5",   // or google/gemini-2.5-flash, etc.
  ...
});

Full provider list: vercel.com/ai-gateway/docs.

Deploy

One-click to Vercel:

Stack

• Next.js 16 (App Router)
• Tailwind CSS v4
• shadcn/ui primitives
• AI SDK v6 + Vercel AI Gateway
• Zod for input validation
• TypeScript

Project structure

app/
  page.tsx              landing page
  tailor/page.tsx       the demo flow (client component, streams output)
  api/tailor/route.ts   the AI route (server, streamText + zod validation)
  layout.tsx            root layout
  globals.css           Tailwind v4 + design tokens (lime + charcoal)
components/ui/          shadcn primitives (button, card, input, textarea, etc.)
lib/utils.ts            cn() helper

Ideas to fork-and-extend

• Add file upload for PDF resumes (use pdf-parse server-side)
• Add persistence with Supabase / Neon for application history
• Add auth with Clerk or NextAuth so users can save their resumes
• Add interview prep: same prompt structure, different system prompt
• Add multi-model comparison: stream from 2-3 models side-by-side and let users pick
• Add scoring: ask the model to also output a fit score (0-100) per resume bullet

License

MIT. Fork it. Ship your own thing.