Open-source repositories gaining traction right now.
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#prompt-engineering
🪨 why use many token when few token do trick — Claude Code skill that cuts 65% of tokens by talking like caveman

Extracted system prompts from Anthropic - Claude Fable 5, Opus 4.8, Claude Code, Claude Design. OpenAI - ChatGPT 5.5 Thinking, GPT 5.5 Instant, Codex. Google - Gemini 3.5 Flash, 3.1 Pro, Antigravity. xAI - Grok, Cursor, Copilot, VS Code, Perplexity, and more. Updated regularly.

Star github / awesome-copilot Community-contributed instructions, prompts, and configurations to help you make the most of GitHub Copilot.

The GEP-Powered Self-Evolution Engine for AI Agents. Genome Evolution Protocol. | evomap.ai

Pack your entire codebase into a single AI-friendly file. Feed your repo to Claude, ChatGPT, Gemini with cost estimation and built-in prompt templates.
Paste a github.com URL. Submissions are reviewed before they are tracked.