10 tagged system prompt, measured the same way as everything else here.
Skill Claude CodeCodex
Stop LLM slop. A curated system prompt that cuts verbose, corporate-sounding LLM output by 56-71% (measured) while preserving information. Works bilingually (English + Chinese). Installs into your AGENTS.md as an always-on behavior modifier.
kangarooking/system-prompt-skills
Skill Claude CodeCodex
Persona design defines an AI’s core identity, role, limits, and relationship with the user. It answers what the AI is and how it should behave in a specific product or context.
Skill Claude CodeCodex
Token-optimized prompt compression techniques for reducing LLM instruction size while preserving or improving quality.
Skill Claude CodeCodex
AI.MD — Convert any human-written CLAUDE.md into AI-native structured format. Your CLAUDE.md is read by AI every single turn, not by you — so write it in AI's language. Battle-tested: 5 rounds, 4 models (GPT-5.3, Gemini 2.5 Pro, Grok-4, Claude Opus 4.6). Structured-label format raised Codex compliance from 6/8 → 8/8…
aigorahub/stop-being-annoying-claude
Skill Claude CodeCodex
Re-assert the working agreement mid-session, or strip AI writing tells from text. Use when the user invokes /stop-the-charade, when they say Claude is drifting back into persona, parenting, or filler, or when they ask to humanize, de-AI, or clean up a piece of text, a file, or a previous response.
gaia-research/skill-context-diet
Skill Claude CodeCodex
Measure and compact an oversized agent-context file (CLAUDE.md, .cursorrules, AGENTS.md, a system prompt) without losing rules, or safely run reversible bounded, reversible ablation when intentional/aggressive context removal is requested. Triggers: "CLAUDE.md too big", "over the char limit", "context file too large"…
Skill Claude CodeCodex
Strip the tells that mark prose as AI-generated. Use when writing or editing anything a person will read: posts, articles, documentation, emails, marketing copy.