PromptKing

The Challenge

Most people struggle to write effective AI prompts. Without structure, prompts tend to be vague, leading to inconsistent and low-quality outputs. Existing tools either offer no guidance or are overly complex for everyday use.

• Users lacked a structured approach to prompt engineering
• No easy way to save, organise, and reuse prompts across sessions
• Discovering high-quality prompts from the community was fragmented
• Managing different AI personas for different tasks was tedious

The Solution

PromptKing introduces a guided 5-step wizard that walks users through crafting effective prompts — from defining intent and selecting an AI role, to adding context, specifying output requirements, and running a quality check.

• Step 1: Intent — Define one clear sentence describing what you want
• Step 2: Role — Choose from 15+ pre-built AI personas or create custom ones
• Step 3: Context — Add input data, target audience, and constraints
• Step 4: Output — Define expected format and content requirements
• Step 5: Quality Check — Automated validation checklist before finalising

Key Deliverables

Architecture

• Full-stack application with React SPA frontend and Go REST API backend
• PostgreSQL database with JSONB columns for flexible prompt storage
• JWT authentication with refresh token rotation and Google OAuth integration
• Rate limiting and security hardening across all endpoints

Frontend

• React 18 with TypeScript and Vite for fast development
• shadcn/ui component library built on Radix UI primitives
• Multi-step wizard with state persistence across steps
• Protected routes with automatic session management

Backend

• Go API server with go-chi router and middleware stack
• Database migrations with golang-migrate for schema versioning
• GitHub API integration for auto-discovering open-source prompt repositories
• Soft-delete support for data recovery and audit trails

Features

• Save and manage personal prompt library
• Create and customise AI role personas
• Explore open-source prompts from curated GitHub repositories
• Dual authentication: email/password and Google OAuth