✨ A customizable copilot-instructions.md ruleset & prompts to guide GitHub Copilot toward secure coding defaults in Java, Node.js, C# and Python. Blocks risky patterns, teaches safe habits.
Robotti-io/
copilot-security-instructions
Robotti-io/copilot-security-instructionsRules & Prompts
42
wanshuiyin/
HERO-Anti-OverDefense
wanshuiyin/HERO-Anti-OverDefenseRules & Prompts
HERO = Hashing · Edge cases · Rubrics · Overbuild — the four shapes coding agents over-defend in. A paste-in contract that stops them. Works with Claude Code, Codex, Antigravity, Cursor, Copilot, Windsurf, Gemini CLI.
444
lifedever/
claude-rules
lifedever/claude-rulesRules & Prompts
Coding standards for AI coding assistants. Auto-detect tech stack, generate project rules. Works with Claude Code, Cursor, Antigravity, GitHub Copilot.
189

Piebald-AI/claude-code-system-promptsRules & Prompts
All parts of Claude Code's system prompt, 27 builtin tool descriptions, sub agent prompts (Plan/Explore/Task), utility prompts (CLAUDE.md, compact, statusline, magic docs, WebFetch, Bash cmd, security review, agent creation). Updated for each Claude Code version.
13k