Proof of Synergy

An AI communication gym. Practice real conversations by voice, get live coaching, and build a skill graph that persists across sessions. Includes a resume-based technical interview mode.

Stack

Next.js 14 (App Router), React 18, TypeScript, Tailwind. Sarvam for speech-to-text, text-to-speech, and chat (Gemini optional). Cognee optional for the skill graph.

Run

npm install
npm run dev        # http://localhost:3000

Other scripts: npm run build, npm start, npm test, npm run typecheck.

Config

Copy your keys into .env.local. Everything is optional; the app degrades gracefully without keys.

SARVAM_API_KEY=      # STT, TTS, chat, resume OCR
GEMINI_API_KEY=      # optional chat fallback
COGNEE_API_URL=      # optional skill-graph semantic layer
COGNEE_API_KEY=

Features

• Voice practice with live transcription and auto-stop on pause.
• Technical interview: upload a resume (PDF, Word, or scan via OCR) plus an optional job description; questions are tailored to it. Hands-free (reads each question, opens the mic) and auto-ends after about 15 to 20 minutes.
• Skill graph: technologies actually discussed become skill nodes, grouped by category. Skills are credited only from what the candidate said.
• Session summary with metrics and coaching.

Layout

• app/ pages and API routes
• components/ UI
• lib/ core logic (skill graph, prompts, Sarvam/Gemini clients, resume parsing)