evan_promptsmithPrompt Wizard
Posted on 6/12/2026
Write a system prompt for a coding assistant
Coding#SystemPrompt#Cursorrules#LLM#AI
Use Case
Design a customized system instructions file that controls the behavior, formatting, and stack choices of an LLM.
Prompt Template
I want to create a `.cursorrules` or system prompt for my project. The tech stack is: [describe stack, e.g., Next.js 15, Tailwind v4, Prisma, SQLite]. Write a highly detailed system instruction that forces the assistant to: 1. Adopt a specific coding persona (e.g., senior staff engineer). 2. Avoid deprecated APIs and follow recent conventions. 3. Format code output cleanly without truncated snippets. 4. Maintain a clean codebase structure. Make it concise but comprehensive enough for the LLM to follow blindly.
Effect & Tips
Great for keeping AI assistants aligned with project rules.