Open-source prompt-engineering software
631 open-source libraries, tools and applications tagged prompt-engineering, ranked by how closely prompt-engineering is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
631 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| Superpowers Superpowers is an agentic skills framework that orchestrates coding agents through a structured software development workflow. It provides … | 82 | 290242 | active |
| mattpocock/skills Skills is a collection of AI agent skills that automate engineering tasks such as planning, spec writing, ticket creation, and code review.… | 78 | 266516 | active |
| DietrichGebert/ponytail Ponytail is a JavaScript library that provides a ruleset for AI coding agents to write the minimal amount of code needed. It integrates wit… | 81 | 166288 | active |
| LangChain LangChain is an open-source Python library for building LLM-powered applications and autonomous agents. It provides composable components, … | 95 | 148099 | active |
| nextlevelbuilder/ui-ux-pro-max-skill UI UX Pro Max is an AI‑driven CLI that offers design intelligence for creating professional user interfaces across many frameworks. It prov… | 79 | 129906 | active |
| JuliusBrussee/caveman Caveman is a set of tools that reduce token usage of AI coding agents by applying a skill that strips filler and a local proxy that compres… | 82 | 113485 | active |
| MadsLorentzen/ai-job-search An AI-powered job application framework built on Claude Code that runs locally: it evaluates job postings, tailors CVs, writes cover letter… | 83 | 60836 | active |
| blader/humanizer Humanizer is a Python‑based skill that rewrites AI‑generated text to sound more natural and human‑like. It works as a markdown skill for AI… | 81 | 54964 | active |
| coreyhaines31/marketingskills Marketing Skills is a JavaScript library that provides a collection of AI agent skills for marketing tasks such as SEO, copywriting, CRO, a… | 78 | 54081 | active |
| BMad Method BMAD-METHOD is an open-source framework and methodology for Agile AI-driven development, providing structured agents and workflows that tur… | 87 | 54038 | active |
| Academic Research Skills Academic Research Skills is a Python library of Claude Code skills that guides researchers through the full academic workflow, from questio… | 83 | 52555 | active |
| Yuan1z0825/nature-skills Nature Skills is a CLI-based skill library that provides reusable AI-powered workflows for academic writing and scientific figure generatio… | 58 | 45766 | active |
| emilkowalski/skills Skills is a collection of AI‑agent prompt files that encode design and animation best‑practices. It can be installed via npx and used to gu… | 60 | 45745 | active |
| LifeOS Fabric is an open-source framework for augmenting humans with AI by organizing crowdsourced AI prompts (called patterns) into a modular, re… | 89 | 44214 | active |
| anthropics/financial-services A collection of reference AI agents, skills, and data connectors for financial-services workflows like investment banking, equity research,… | 59 | 38868 | active |
| linshenkx/prompt-optimizer Prompt Optimizer is an AI prompt optimization tool that helps users write, refine, test, and evaluate prompts for better LLM outputs. It sh… | 89 | 38597 | active |
| alchaincyf/nuwa-skill Nuwa.skill is an Agent Skills-compatible package that distills how a person thinks—mental models, decision heuristics, and expression style… | 56 | 33624 | active |
| GPT Researcher GPT Researcher is a Python‑based autonomous AI agent that performs deep, multi‑source research and generates detailed reports with citation… | 95 | 29943 | active |
| alirezarezvani/claude-skills A large open-source collection of 380+ Claude Code skills, agent plugins, custom commands, and agent personas for AI coding assistants. Ski… | 79 | 27786 | active |
| vercel/ai Vercel AI is a TypeScript SDK that provides a unified API for interacting with large language models across many providers. It includes uti… | 93 | 27251 | active |
| Planning with Files Suite A persistent file-based planning skill/plugin for AI coding agents that maintains task_plan.md, findings.md, and progress.md on disk and re… | 77 | 27093 | active |
| JimLiu/baoyu-skills A collection of 20+ AI agent skills by Baoyu for Claude Code, Codex, and OpenClaw, covering tasks like article formatting, cover image gene… | 75 | 26734 | active |
| phuryn/pm-skills PM Skills Marketplace is a curated library of over 100 AI‑driven product management skills, commands, and plugins for Claude and other assi… | 75 | 26583 | active |
| TOON TOON (Token-Oriented Object Notation) is a compact, human-readable encoding of the JSON data model designed to reduce token usage in LLM pr… | 78 | 25440 | active |
| titanwings/distilly Distilly is a Python tool that distills a person's experience, judgment, voice, and working style from messages, documents, interviews, and… | 59 | 25182 | active |
| SuperClaude-Org/SuperClaude_Framework SuperClaude is a configuration framework that enhances Claude Code with 30 specialized slash commands, 20 cognitive personas, 7 behavioral … | 74 | 23914 | active |
| Guidance Guidance is a Python library that provides a domain‑specific language for steering large language models. It lets developers embed conditio… | 73 | 21799 | active |
| Guidance Guidance is a Python library providing an efficient programming paradigm for steering large language models, letting you interleave control… | 73 | 21799 | active |
| huggingface/peft 🤗 PEFT is a Python library that provides state‑of‑the‑art parameter‑efficient fine‑tuning methods for large pretrained models. It integrate… | 95 | 21795 | active |
| KKKKhazix/khazix-skills Khazix Skills is a Python‑based collection of ready‑to‑use AI Agent Skills that follow the open Agent Skills standard. Each skill is a stru… | 59 | 21494 | active |
| openai/gpt-oss gpt-oss provides open-weight large language models (120B and 20B) with full chain‑of‑thought reasoning and native agentic capabilities. The… | 66 | 20428 | active |
| Nagi-ovo/voyager Voyager is a browser extension that enhances AI chat interfaces such as Gemini, Claude, ChatGPT and DeepSeek with workflow tools like timel… | 81 | 20422 | active |
| tanweai/pua PUA is a Python‑based skill plugin that injects high‑energy, persistence‑driving prompts into AI coding agents such as Claude Code, OpenAI … | 78 | 19708 | active |
| LifeOS LifeOS is an open-source, AI-powered 'life operating system' that captures your goals, context, and ideal state, then uses that personal co… | 79 | 19387 | active |
| op7418/Humanizer-zh A Chinese-localized Claude Code skill that removes AI-generated writing patterns from text, rewriting it to sound more natural and human. I… | 59 | 18219 | active |
| microsoft/SkillOpt SkillOpt is a Python library from Microsoft that trains reusable natural-language skills for frozen LLM agents using trajectory-driven edit… | 73 | 17295 | active |
| wanshuiyin/Auto-claude-code-research-in-sleep ARIS is a collection of lightweight Markdown-only skills that turn LLM coding agents (Claude Code, Codex, Cursor, etc.) into autonomous ML … | 81 | 16907 | active |
| xbtlin/ai-berkshire A collection of AI research skills for Claude Code and Codex that systematizes the value investing methodologies of Buffett, Munger, Duan Y… | 60 | 16597 | active |
| Outlines Outlines is a Python library for structured generation that guarantees LLM outputs conform to a desired structure (JSON schemas, regex, gra… | 93 | 15920 | active |
| mindfold-ai/Trellis Trellis is an open-source engineering framework and agent harness for AI coding assistants that persists project specs, tasks, and cross-se… | 58 | 14748 | active |
| nidhinjs/prompt-master A Claude skill (plugin) that generates and refines precise prompts for a wide range of AI tools like ChatGPT, Cursor, Midjourney, and Stabl… | 56 | 13535 | active |
| Orchestra-Research/AI-Research-SKILLs An open-source library of ~98 packaged 'skills' (knowledge modules) that turn AI coding agents like Claude Code, Codex, or Gemini into auto… | 69 | 12991 | active |
| langgptai/LangGPT LangGPT is a structured, reusable prompt design framework for large language models, offering template-based methodology with variables, co… | 73 | 12612 | active |
| helloianneo/ian-xiaohei-illustrations A Codex Skill that guides AI agents to generate hand-drawn, quirky 16:9 illustrations for Chinese articles, featuring a signature 'Xiaohei'… | 61 | 12588 | active |
| gsd-build/get-shit-done A lightweight meta-prompting, context engineering, and spec-driven development system built as an extension for Claude Code. This repositor… | 10 | 64286 | maintenance |
| Jeffallan/claude-skills A collection of 67 specialized skills packaged as a Claude Code plugin that turns the Claude Code AI coding agent into an expert pair progr… | 85 | 11920 | active |
| elder-plinius/G0DM0D3 G0DM0D3 is an open-source, multi-model AI chat interface designed for red-teaming, cognition research, and unrestricted LLM interaction. It… | 53 | 11643 | active |
| kangarooking/cangjie-skill Cangjie Skill is a Python-based tool that distills methodologies from high-value content like books, long-form videos, and podcasts into ex… | 78 | 11455 | active |
| cobusgreyling/loop-engineering A collection of patterns, starter templates, and npm CLI tools for 'loop engineering' — designing automated loops that prompt and orchestra… | 76 | 11446 | active |
| petergyang/no-ai-slop An AI agent skill/plugin that removes 20+ patterns of AI-generated writing clichés ('slop') from text while preserving the author's persona… | 74 | 11204 | active |
| slavingia/skills A Claude Code plugin that installs 10 skills based on Sahil Lavingia's book The Minimalist Entrepreneur. Each skill is invoked via a slash … | 46 | 10816 | active |
| numman-ali/openskills OpenSkills is a universal CLI that installs and loads Anthropic SKILL.md-format skills for any AI coding agent, including Claude Code, Curs… | 50 | 10767 | active |
| open-gsd/gsd-core GSD Core is a meta-prompting, context-engineering, and spec-driven development framework that orchestrates AI coding agents (Claude Code, C… | 82 | 10725 | active |
| dontbesilent2025/dbskill A Chinese-language AI Skills toolbox (31 skills) distilled from dontbesilent's public tweets, designed for agents like Claude Code, Codex, … | 76 | 10606 | active |
| GitHub Copilot SDK Awesome Copilot is a community‑curated collection of agents, instructions, skills, and plugins that extend GitHub Copilot. It provides read… | 79 | 10557 | active |
| HKUSTDial/Supervisor-Skills A collection of structured AI skills distilled from a professor's decade of research experience, designed to act as an AI co-supervisor for… | 59 | 9743 | active |
| mshumer/gpt-prompt-engineer A Jupyter Notebook-based tool that automatically generates, tests, and ranks LLM prompts for a given task using GPT-4, GPT-3.5-Turbo, or Cl… | 47 | 9681 | active |
| EvoMap/evolver Evolver is a Node.js-based self-evolving engine for AI agents built on the GEP (Gene Evolution Protocol), letting agents turn experience in… | 77 | 9145 | active |
| Harness Harness is a Claude Code plugin that acts as a meta-skill for designing domain-specific agent teams. From a single prompt, it generates age… | 58 | 9071 | active |
| lencx/Noi Noi is a cross-platform desktop AI browser that unifies multiple AI chat services (ChatGPT, Claude, Gemini, Perplexity, DeepSeek, etc.) int… | 77 | 9063 | active |
| MiniMax H3 MiniMax H3 is a repository of installable agent skills for the MiniMax H3 video generation model, including a prompt-writing skill with ref… | 53 | 8994 | active |
| rockbenben/ChatGPT-Shortcut AiShort (ChatGPT Shortcut) is a searchable, tag-filterable library of 5000+ ready-to-use AI prompts for ChatGPT, Claude, Gemini, DeepSeek, … | 94 | 8785 | active |
| unicity-aos/capsule-memory A Rust WASM capsule that provides cross-session memory for Astrid OS agents by hooking into prompt assembly and injecting workspace memory … | 70 | 8443 | active |
| unicity-aos/capsule-identity A Rust-based system prompt builder that assembles an AI agent's identity from workspace config (spark.toml) and persisted capsule KV state.… | 69 | 8411 | active |
| jnMetaCode/superpowers-zh A Chinese community edition of the superpowers project that installs 20 battle-tested Markdown 'skills' (methodologies like brainstorming, … | 82 | 8341 | active |
| vudovn/ag-kit AG Kit is a CLI-installed capability expansion kit for AI coding agents (primarily Google Antigravity) that installs a .agents workspace of… | 80 | 8182 | active |
| zenstory-ai/oh-story-claudecode A skill pack for Claude Code and compatible AI coding agents that provides an end-to-end workflow for writing Chinese web fiction, covering… | 82 | 7700 | active |
| mufeedvh/code2prompt Code2Prompt is a Rust-based CLI tool that converts an entire codebase into a single structured LLM prompt, including a source tree, file co… | 66 | 7688 | active |
| lingfengQAQ/webnovel-writer A Claude Code plugin for long-form serialized webnovel writing, built in Python. It provides slash-command skills for initializing story se… | 84 | 7566 | active |
| guardrails-ai/guardrails Guardrails is a Python framework for building reliable LLM applications by running Input/Output Guards that detect and mitigate risks, and … | 95 | 7527 | active |
| lijigang/ljg-skills A curated collection of custom skills (prompt packs) for OpenAI Codex and compatible AI agents, installable via the skills CLI in org-mode … | 60 | 7525 | active |
| deanpeters/Product-Manager-Skills A library of 77 battle-tested product management skills and 6 command workflows packaged as a Claude Code plugin (also usable with Codex, C… | 80 | 7416 | active |
| LiamGvchi/gc-minimal-zine-poster A Codex skill that turns themes, sentences, photos, or reference sets into minimal zine-style editorial poster prompts and generated images… | 73 | 7365 | active |
| kyegomez/swarms Swarms is an enterprise-grade Python framework for orchestrating multi-agent systems powered by large language models, offering prebuilt se… | 66 | 7282 | active |
| OpenAI Codex Plugins A catalog of Agent Skills—folders of instructions, scripts, and resources—for OpenAI's Codex CLI agent, distributed via the openai/skills a… | 58 | 7137 | active |
| dsh-routing-suite A bundled kit for the DSH (DeepSeek harness) agent runtime combining a runtime injector plugin with task-aware reasoning-mode router preset… | 76 | 6999 | active |
| gepa-ai/gepa GEPA is a Python framework that optimizes textual system parameters such as prompts, code, and agent configurations using LLM-based reflect… | 81 | 6996 | active |
| therealXiaomanChu/ex-skill A Claude Code skill (plugin) that distills an ex-partner into a personalized AI persona. It ingests chat exports (WeChat, QQ), screenshots,… | 46 | 6406 | active |
| alchaincyf/darwin-skill Darwin.skill is an agent skill for Claude Code that autonomously optimizes other SKILL.md agent skills through an evaluate-improve-test-kee… | 58 | 6170 | active |
| princeton-nlp/tree-of-thought-llm Official implementation of the Tree of Thoughts (ToT) framework for deliberate LLM problem solving, generalizing chain-of-thought prompting… | 21 | 6071 | stable |
| tigerless-labs/autoharness Autoharness is a self-learning skill layer for Claude Code that distills reusable skills from your real coding sessions, merges near-duplic… | 58 | 6020 | active |
| epoko77-ai/im-not-ai A Claude Code / Copilot CLI skill (with a hosted web app) that detects and rewrites AI-generated Korean text so it reads like natural human… | 79 | 5958 | active |
| MadcowD/ell ell is a lightweight Python library for language model programming that treats prompts as functions (language model programs) rather than s… | 32 | 5847 | active |
| ZzzLc0405/photo-abstract-editorial A Codex Skill / prompt template that transforms a photo into a vertical editorial composition combining the original photo with an abstract… | 54 | 5830 | active |
| coze-dev/coze-loop Coze Loop is an open-source, self-hostable platform for full-lifecycle AI agent development, offering prompt engineering with a visual play… | 72 | 5764 | active |
| WUBING2023/PaperSpine PaperSpine is an orchestrated AI-agent skill (for Claude Code, Codex, OpenClaw, and Hermes CLI) that guides academic writing: it learns fro… | 66 | 5724 | active |
| SenseNova A collection of modular Agent Skills for SenseNova models that add end-to-end office capabilities such as slide-deck generation, Excel data… | 58 | 5683 | active |
| wuyoscar/GPT-Image2-Skill A curated prompt gallery and library for OpenAI's GPT Image 2 model, packaged as an agentic skill and Python CLI for image generation and e… | 72 | 5622 | active |
| s1dashu/ip-as-logo-skill A compact Agent Skill that guides AI agents to generate highly simplified, rounded, subtly neo-skeuomorphic IP mascot logos. It follows the… | 54 | 5575 | active |
| breferrari/obsidian-mind Obsidian Mind is a self-organizing Obsidian vault template that gives AI coding agents like Claude Code, Codex CLI, and Gemini CLI persiste… | 82 | 5300 | active |
| Zeejay0/gathered-scenes-zine-skill A collection of image-generation skills (prompt packs) written for Codex that transform ordinary photos into zine-style paper artworks. It … | 55 | 5277 | active |
| icip-cas/PPTAgent PPTAgent is an agentic Python framework that automatically generates PowerPoint presentations from documents using a two-stage, edit-based … | 79 | 5122 | active |
| gd3kr/BlenderGPT A Blender add-on that integrates OpenAI's GPT-4/GPT-3.5 into Blender's UI, letting users control the 3D software with natural language comm… | 31 | 4987 | active |
| coleam00/excalidraw-diagram-skill A coding agent skill that enables Claude Code and other skill-compatible agents to generate polished Excalidraw diagrams from natural langu… | 43 | 4978 | active |
| microsoft/poml POML is a markup language from Microsoft for structuring, templating, and styling prompts for large language models, with an HTML-like synt… | 48 | 4962 | active |
| conorbronsdon/avoid-ai-writing A portable agent skill that audits and rewrites text to remove AI writing patterns ('AI-isms'). It supports detect-only, rewrite, and edit-… | 82 | 4947 | active |
| darrenhinde/OpenAgentsControl OpenAgentsControl (OAC) is an AI agent framework built on OpenCode that enforces plan-first development workflows with approval-based execu… | 70 | 4896 | active |
| Swift Agent Skills An agent skill (SwiftUI Pro) that teaches AI coding assistants like Claude Code, Codex, Gemini, and Cursor to write modern, idiomatic Swift… | 56 | 4873 | active |
| danyuchn/asd-ste100-skill A Claude Code skill that rewrites dense, ambiguous English into ASD-STE100 Simplified Technical English, the aerospace controlled-language … | 58 | 4797 | active |
| Keysmith codex-keysmith is a Python CLI that safely deploys versioned Markdown instruction files into the Codex CLI global configuration directory (… | 79 | 4755 | active |
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