- ponytail by DietrichGebert, 191k stars. Agent skill that pushes AI coding toward minimal, less code
- caveman by JuliusBrussee, 120k stars. Skill and proxy for coding agents that makes replies terser to cut tokens
- headroom by headroomlabs-ai, 80k stars. Compresses tool outputs and RAG chunks before they reach the LLM as a library, proxy, or MCP server
- OpenSpec by Fission-AI, 75k stars. Spec-driven development workflow for AI coding assistants
- humanizer by blader, 69k stars. Agent skill that strips AI-generated patterns from text
- ai-agent-book by bojieli, 58k stars. Open-source book on AI agent design with full text, PDF, and chapter code
- academic-research-skills by Imbad0202, 57k stars. Claude Code skills covering research, writing, review and revision
- awesome-copilot by github, 41k stars. Curated instructions, agents, skills and configs for GitHub Copilot
- PageIndex by VectifyAI, 40k stars. Reasoning-based document index for retrieval without vector embeddings
- book-to-skill by virgiliojr94, 38k stars. Converts a technical book PDF into a Claude Code skill
- awesome-gpt-image-2 by freestylefly, 36k stars. Prompt library and case collection for GPT Image 2 with reusable skills
- prompt-master by nidhinjs, 16k stars. Claude skill that writes prompts tailored to other AI tools
- semantica by semantica-agi, 15k stars. Context graph infrastructure for building auditable AI systems
- Trail-Code by trailhq, 11k stars. Shared code map and team decision memory for coding agents
- honcho by plastic-labs, 8.1k stars. Memory library for stateful agents that keeps context across sessions
- code2prompt by mufeedvh, 7.8k stars. CLI that packs a codebase into one LLM prompt with a source tree and token count
- quant-mind by LLMQuant, 3.1k stars. Framework for extracting and retrieving knowledge from quant finance research
- cocoindex-code by cocoindex-io, 3.0k stars. Lightweight AST-based code search CLI for coding agents
- token-optimizer by alexgreensh, 3.0k stars. Finds wasted context tokens in Claude Code sessions and trims them
- advanced-context-engineering-for-coding-agents by humanlayer, 2.8k stars. Context engineering guide for coding agents
- ripwire by redhat-et, 2.5k stars. Zero-dependency C++ CLI and MCP server that finds code context for agents
- openwolf by cytostack, 2.4k stars. Shared project memory for Claude Code, Codex and OpenCode with local token accounting
- contextgem by shcherbak-ai, 2.1k stars. Python framework for pulling structured data out of documents with LLMs
- context-engineering-kit by NeoLabHQ, 1.8k stars. Claude Code skills that improve agent output across several coding tools
- most-capable-agent-system-prompt by fainir, 889 stars. Copy-paste system prompt for building a self-improving coding agent setup
- framekeeper by chipfighter, 803 stars. Plugin that keeps only needed images in agent chats to save tokens
- claude-token-optimizer by nadimtuhin, 655 stars. CLI that trims the CLAUDE.md context Claude Code loads at session start
- lowfat by zdk, 586 stars. CLI that strips noise from command output before it reaches an LLM
- token-optimizer-mcp by ooples, 581 stars. MCP server that measures and reduces token use for coding agents
- graphicle by Graphicle-AI, 571 stars. Code graph and persistent memory server for coding agents over MCP
- ratel by ratel-ai, 562 stars. Context engine for agents with skills, memory and BM25 plus semantic search
- boost by jfrog, 550 stars. Scripts to cut token use and tune context for Claude Code and Cursor
- mcptoon by activeing123, 431 stars. Single CLI gateway for MCP servers and skills that cuts tool schema tokens
- honey-for-devs by Green-PT, 356 stars. Skill that makes coding agents write and hand off less text to save tokens
- LAP by Lap-Platform, 349 stars. Compiles OpenAPI, GraphQL and other API specs into a compact format for agents
- rails-ai-context by crisnahine, 187 stars. Ruby gem exposing a Rails app's schema and routes to AI coding agents
- open-h3-ir by ruashots, 137 stars. Local implementation of MiniMax H3 context IR for structured video briefs
- governor by 0xhimanshu, 133 stars. Wrapper for Claude Code that trims context, filters tool output and logs usage
- wade-skills by zapier, 100 stars. Collection of agent skills from Zapier's CEO for Claude Code and Cursor
- claude-terse by lowenbjer, 55 stars. Claude Code plugin that removes filler, essays and slogans from replies
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