An index of the LangChain + LangGraph ecosystem: concepts, projects, tools, templates, and guides for LLM & multi-agent apps.

LangChain & Prompt Engineering tutorials on Large Language Models (LLMs) such as ChatGPT with custom data. Jupyter notebooks on loading and indexing data, creating prompt templates, CSV agents, and using retrieval QA chains to query the custom data. Projects for using a private LLM (Llama 2) for chat with PDF files, tweets sentiment analysis.

Claude Code Skill Factory — A powerful open-source toolkit for building and deploying production-ready Claude Skills, Code Agents, custom Slash Commands, and LLM Prompts at scale. Easily generate structured skill templates, automate workflow integration, and accelerate AI agent development with a clean, developer-friendly setup.

Tooling to build LLM applications: prompt templating and composition, agents, LLM memory, and other instruments for builders of AI applications.

专业的 LaTeX 简历模板，专为大模型与 Agent 算法工程师设计 | Professional LaTeX resume template for LLM & Agent algorithm engineers

Natural language → ComfyUI workflow JSON. 34 built-in templates, 360+ node definitions, auto model download. Supports txt2img, img2img, txt2vid, img2vid, audio, 3D generation across SD1.5/SDXL/SD3/FLUX/Wan2.2/HunyuanVideo/LTXV/Mochi/Cosmos + LLM integration. Works as a skill for Claude Code, Cursor, and other AI coding agents.

Survey paper: From Static Templates to Dynamic Runtime Graphs: A Survey of Workflow Optimization for LLM Agents.

Template repository with AI agent guardrails, safety protocols, and sprint task framework. For Claude, GPT, Gemini, and all LLMs.

Agentic prompts are the most important code you're not engineering. PromptKit fixes that — composable, version-controlled prompt components (personas, protocols, formats, templates) that snap together into reliable, repeatable prompts for bug investigation, design docs, code review, security audits, and more. Works with any LLM.

Minimal FastAPI + Pydantic AI project template for building LLM-powered agents

Monorepo for sinapsis templates supporting LLM based Agents

BMAD AI/ML Engineering Expansion Pack - Streamlined framework for AI Singapore programs (MVP, POC, SIP, LADP) with specialized agents, workflows, and templates for ML/LLM development

Collection of oTree app templates for running experiments with LLM agents.

Self-evolving AI daemon in Go with fully generative UI. LLM generates unique HTML/ANSI interfaces from scratch for every response — not templates, not component catalogs. 10-stage pipeline, 4-level reflection, fractal agents, auto-generated code skills, 6 input channels.

[ICLR 2026] Official implementation of "ChatInject: Abusing Chat Templates for Prompt Injection in LLM Agents"

A personal opinionated template for fullstack projects featuring LLM agents. Supabase, Flask, SvelteKit, Tailwind and websockets

Fabricatio is a Python library designed for building applications that leverage Large Language Models (LLMs) using an event-based agent structure. It utilizes Handlebars for templating and provides a robust framework for managing tasks, workflows, and toolboxes, enabling developers to create intelligent and efficient applications.

LLM agent-driven conversion of Word documents to any LaTeX template

🎭 MoE Agent: Replace Multi-Agent with single-prompt AI architecture | RAG + SQL + Tool calling without routing | Zero context loss, 10x cost reduction | LLM Prompt engineering for AGI | Production-ready template | Solve ambiguous queries & cross-domain reasoning

PromptWeaver: RAG Edition helps design effective prompts for Traditional, Hybrid, and Agentic RAG systems. It offers templates, system prompts, and best practices to improve accuracy, context use, and LLM reasoning.

A starter template for building app agents using Cloudflare's Agent platform, allowing you to build rich user interfaces around AI conversation. Integrated with AI@YourService for authentication and LLM Gateway access, so users pay for their own AI usage instead of you footing the bill.

.NET / ASP.NET Core starter template for Claude Code, Codex, Copilot, and local LLMs with Clean Architecture, EF Core, Azure-ready patterns, and reusable AI agent/skill prompts.

ppt-template-editor is an Agent Skill that enables LLM-driven systems to programmatically edit and manage PowerPoint templates through structured interfaces and automated slide manipulation workflows.

🎨 LLM-driven slide creation workflow: Markdown SPEC + Style TOML → AI-generated prompts → Images/PPT/PDF artifacts. Features style extraction from references, reusable layout templates, and agent-powered automation.

The testing framework for skill engineering. Test MCP tools, prompt templates, agent skills, custom agents, and instruction files with real LLMs. AI analyzes results and tells you what to fix.

A project template for building a multi-tool LLM agent with Llama-Index

A JSON/YAML-esque system instructions template designed to get the most value out of each individual token spent, while slightly improving code quality, security, and intent of agentic coding LLMs.

MetaPromptFramework is a collection of advanced meta-prompt engineering templates and design patterns built for LLMs like GPT-4, Claude, Gemini, Mistral, and beyond. This framework provides a structured, reusable, and scalable way to craft high-performance prompts across automation, agents, RAG pipelines, and AI-first applications.

A reusable, full-stack starter kit for building LLM-powered agents.

🚀 Build and customize AI agents, skills, and patterns with this vendor-neutral template for effortless integration across platforms.