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Cursor AI user shares 7 rules to prevent recurring coding mistakes

A user on Reddit shared their experience with the AI coding assistant Cursor, detailing seven specific rules they implemented to prevent recurring mistakes. These rules address issues such as unintended code refactoring, incorrect error middleware configuration in Express, inefficient database connection handling, outdated Tauri invoke paths, unsafe use of `.unwrap()` in Rust, and the security risk of assigning user input to `innerHTML`. The user found that providing these explicit constraints to the AI, which lacks memory of their specific project's nuances, significantly improved its performance and reduced debugging time. AI

IMPACT Provides practical strategies for users to enhance the reliability and safety of AI coding assistants by implementing custom rules.

RANK_REASON User-generated tips for improving an AI coding assistant.

Read on r/cursor →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Cursor AI user shares 7 rules to prevent recurring coding mistakes

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  1. r/cursor TIER_2 English(EN) · /u/SixFingeredDev ·

    I got tired of my AI making the same 7 mistakes every session so I wrote a rule for each one. How have you added rules to prevent issues?

    <!-- SC_OFF --><div class="md"><p>Been using Cursor daily for a few months and I kept hitting the same wall. Every new session the assistant starts from zero and makes the same category of mistake it made yesterday.</p> <p>So I started keeping a file. One line per repeated failur…