[](https://the-pocket.github.io/PocketFlow/)
Pocket Flow is a [100-line](pocketflow/__init__.py) minimalist LLM framework
- **Expressive**: Everything you love from larger frameworks—([Multi-](https://the-pocket.github.io/PocketFlow/design_pattern/multi_agent.html))[Agents](https://the-pocket.github.io/PocketFlow/design_pattern/agent.html), [Workflow](https://the-pocket.github.io/PocketFlow/design_pattern/workflow.html), [RAG](https://the-pocket.github.io/PocketFlow/design_pattern/rag.html), and more.
- **Lightweight**: Just the core graph abstraction in 100 lines. Zero bloat, zero dependencies, zero vendor lock-in.
- **Principled**: Built with modularity and clear separation of concerns at its heart for maintainable codes.
- **AI-Friendly**: Intuitive enough for AI agents (e.g., Cursor AI) to assist humans in [Vibe Coding](https://x.com/karpathy/status/1886192184808149383).
- To install, ```pip install pocketflow```or just copy the [source code](pocketflow/__init__.py) (only 100 lines).
- To learn more, check out the [documentation](https://the-pocket.github.io/PocketFlow/). For an in-depth design dive, read the [essay](https://github.com/The-Pocket/.github/blob/main/profile/pocketflow.md).
- 🎉 We now have a [discord](https://discord.gg/hUHHE9Sa6T)
## What can Pocket Flow build?
✨ Below are examples of LLM Apps:
| Formal App Name | Informal One-Liner |Difficulty | Learning Objectives |
| :------------- | :------------- | :------------- | :--------------------- |
| [Youtube Summarizer](https://github.com/The-Pocket/Tutorial-Youtube-Made-Simple) | Explain YouTube Videos to you like you're 5 | ★☆☆
*Beginner* | [Map Reduce](https://the-pocket.github.io/PocketFlow/design_pattern/mapreduce.html) |
| [Cold Opener Generator](https://github.com/The-Pocket/Tutorial-Cold-Email-Personalization) | Instant icebreakers that turn cold leads hot | ★☆☆
*Beginner* | [Map Reduce](https://the-pocket.github.io/PocketFlow/design_pattern/mapreduce.html)
[Web Search](https://the-pocket.github.io/PocketFlow/utility_function/websearch.html) |
| [Ask AI Paul Graham](https://github.com/The-Pocket/Tutorial-YC-Partner) | Ask AI Paul Graham, in case you don't get in | ★★☆
*Medium* | [RAG](https://the-pocket.github.io/PocketFlow/design_pattern/rag.html)
[Map Reduce](https://the-pocket.github.io/PocketFlow/design_pattern/mapreduce.html)
[Text-to-Speech](https://the-pocket.github.io/PocketFlow/utility_function/text_to_speech.html) |
- Want to learn how I vibe code these LLM Apps? Check out [my YouTube](https://www.youtube.com/@ZacharyLLM?sub_confirmation=1):
- Want to create your own Python project? Start with [this template](https://github.com/The-Pocket/PocketFlow-Template-Python)
## Why Pocket Flow?
For a new development paradigmn: **[Vibe Coding](https://x.com/karpathy/status/1886192184808149383)**!
- 🧑 Human **describe LLM App requirements** in a design doc.
- 🤖 The agent (like Cursor AI) **implements App** your code automatically.
👈 (Click to expand) How to set up Pocket Flow for LLM agents?
- **For quick questions**: Use the [GPT assistant](https://chatgpt.com/g/g-677464af36588191b9eba4901946557b-pocket-flow-assistant) (note: it uses older models not ideal for coding).
- **For one-time LLM task**: Create a [ChatGPT](https://help.openai.com/en/articles/10169521-using-projects-in-chatgpt) or [Claude](https://www.anthropic.com/news/projects) project; upload the [docs](docs) to project knowledge.
- **For LLM App development**: Use [Cursor AI](https://www.cursor.com/).
- If you want to start a new project, check out the [project template](https://github.com/The-Pocket/PocketFlow-Template-Python).
- If you already have a project, copy [.cursorrules](.cursorrules) to your project root as [Cursor Rules](https://docs.cursor.com/context/rules-for-ai).
👈 (Click to expand) How does Pocket Flow compare to other frameworks?
Pocket Flow is purpose-built for LLM Agents:
1. **🫠 LangChain-like frameworks** overwhelm Cursor AI with *complex* abstractions, *deprecated* functions and *irritating* dependency issues.
2. 😐 **Without a framework**, code is *ad hoc*—suitable only for immediate tasks, *not modular or maintainable*.
3. **🥰 With Pocket Flow**: (1) Minimal and expressive—easy for Cursor AI to pick up. (2) *Nodes and Flows* keep everything *modular*. (3) A *Shared Store* decouples your data structure from compute logic.
In short, the **100 lines** ensures LLM Agents follows *solid coding practices* without sacrificing *flexibility*.
## How does Pocket Flow work?
The [100 lines](pocketflow/__init__.py) capture what we believe to be the core abstraction of LLM frameworks:
- **Computation**: A *graph* that breaks down tasks into nodes, with *branching, looping, and nesting*.
- **Communication**: A *shared store* that all nodes can read and write to.
From there, it’s easy to implement popular design patterns like ([Multi-](https://the-pocket.github.io/PocketFlow/design_pattern/multi_agent.html))[Agents](https://the-pocket.github.io/PocketFlow/design_pattern/agent.html), [Workflow](https://the-pocket.github.io/PocketFlow/design_pattern/workflow.html), [RAG](https://the-pocket.github.io/PocketFlow/design_pattern/rag.html), etc.
