<div align="center">
  <img src="https://github.com/The-Pocket/.github/raw/main/assets/title.png" alt="Pocket Flow – 100-line minimalist LLM framework" width="600"/>
</div>

<!-- For translation, replace English with [English](https://github.com/The-Pocket/PocketFlow/blob/main/README.md), and remove the link for the target language. -->

English | [中文](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_CHINESE.md) | [Español](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_SPANISH.md) | [日本語](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_JAPANESE.md) | [Deutsch](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_GERMAN.md) | [Русский](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_RUSSIAN.md) | [Português](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_PORTUGUESE.md) | [Français](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_FRENCH.md) | [한국어](https://github.com/The-Pocket/PocketFlow/blob/main/cookbook/pocketflow-batch/translations/README_KOREAN.md)

![License: MIT](https://img.shields.io/badge/License-MIT-yellow.svg)
[![Docs](https://img.shields.io/badge/docs-latest-blue)](https://the-pocket.github.io/PocketFlow/)
 <a href="https://discord.gg/hUHHE9Sa6T">
    <img src="https://img.shields.io/discord/1346833819172601907?logo=discord&style=flat">
</a>

Pocket Flow is a [100-line](https://github.com/The-Pocket/PocketFlow/blob/main/pocketflow/__init__.py) minimalist LLM framework

- **Lightweight**: Just 100 lines. Zero bloat, zero dependencies, zero vendor lock-in.
  
- **Expressive**: Everything you love—([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.

- **[Agentic Coding](https://zacharyhuang.substack.com/p/agentic-coding-the-most-fun-way-to)**: Let AI Agents (e.g., Cursor AI) build Agents—10x productivity boost!

Get started with Pocket Flow:
- To install, ```pip install pocketflow```or just copy the [source code](https://github.com/The-Pocket/PocketFlow/blob/main/pocketflow/__init__.py) (only 100 lines).
- To learn more, check out the [video tutorial](https://youtu.be/0Zr3NwcvpA0) and [documentation](https://the-pocket.github.io/PocketFlow/)
- 🎉 Join our [Discord](https://discord.gg/hUHHE9Sa6T) to connect with other developers building with Pocket Flow!
- 🎉 Pocket Flow now has [Typescript](https://github.com/The-Pocket/PocketFlow-Typescript), [Java](https://github.com/The-Pocket/PocketFlow-Java), [C++](https://github.com/The-Pocket/PocketFlow-CPP), [Go](https://github.com/The-Pocket/PocketFlow-Go), [Rust](https://github.com/The-Pocket/PocketFlow-Rust) and [PHP](https://github.com/The-Pocket/PocketFlow-PHP) versions!

## Why Pocket Flow?

Current LLM frameworks are bloated... You only need 100 lines for LLM Framework!

<div align="center">
  <img src="https://github.com/The-Pocket/.github/raw/main/assets/meme.jpg" width="400"/>


  |                | **Abstraction**          | **App-Specific Wrappers**                                      | **Vendor-Specific Wrappers**                                    | **Lines**       | **Size**    |
|----------------|:-----------------------------: |:-----------------------------------------------------------:|:------------------------------------------------------------:|:---------------:|:----------------------------:|
| LangChain  | Agent, Chain               | Many <br><sup><sub>(e.g., QA, Summarization)</sub></sup>              | Many <br><sup><sub>(e.g., OpenAI, Pinecone, etc.)</sub></sup>                   | 405K          | +166MB                     |
| CrewAI     | Agent, Chain            | Many <br><sup><sub>(e.g., FileReadTool, SerperDevTool)</sub></sup>         | Many <br><sup><sub>(e.g., OpenAI, Anthropic, Pinecone, etc.)</sub></sup>        | 18K           | +173MB                     |
| SmolAgent   | Agent                      | Some <br><sup><sub>(e.g., CodeAgent, VisitWebTool)</sub></sup>         | Some <br><sup><sub>(e.g., DuckDuckGo, Hugging Face, etc.)</sub></sup>           | 8K            | +198MB                     |
| LangGraph   | Agent, Graph           | Some <br><sup><sub>(e.g., Semantic Search)</sub></sup>                     | Some <br><sup><sub>(e.g., PostgresStore, SqliteSaver, etc.) </sub></sup>        | 37K           | +51MB                      |
| AutoGen    | Agent                | Some <br><sup><sub>(e.g., Tool Agent, Chat Agent)</sub></sup>              | Many <sup><sub>[Optional]<br> (e.g., OpenAI, Pinecone, etc.)</sub></sup>        | 7K <br><sup><sub>(core-only)</sub></sup>    | +26MB <br><sup><sub>(core-only)</sub></sup>          |
| **PocketFlow** | **Graph**                    | **None**                                                 | **None**                                                  | **100**       | **+56KB**                  |

</div>

## How does Pocket Flow work?

The [100 lines](https://github.com/The-Pocket/PocketFlow/blob/main/pocketflow/__init__.py) capture the core abstraction of LLM frameworks: Graph!
<br>
<div align="center">
  <img src="https://github.com/The-Pocket/.github/raw/main/assets/abstraction.png" width="900"/>
</div>
<br>

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.
<br>
<div align="center">
  <img src="https://github.com/The-Pocket/.github/raw/main/assets/design.png" width="900"/>
</div>
<br>
✨ Below are basic tutorials:

<div align="center">
  
|  Name  | Difficulty    |  Description  |  
| :-------------:  | :-------------: | :--------------------- |  
| [Chat](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-chat) | ☆☆☆ <sup>*Dummy*</sup>  | A basic chat bot with conversation history |
| [Structured Output](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-structured-output) | ☆☆☆ <sup>*Dummy*</sup> | Extracting structured data from resumes by prompting |
| [Workflow](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-workflow) | ☆☆☆ <sup>*Dummy*</sup> | A writing workflow that outlines, writes content, and applies styling |
| [Agent](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-agent) | ☆☆☆ <sup>*Dummy*</sup>  | A research agent that can search the web and answer questions |
| [RAG](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-rag) | ☆☆☆ <sup>*Dummy*</sup> | A simple Retrieval-augmented Generation process |
| [Batch](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-batch) | ☆☆☆ <sup>*Dummy*</sup> | A batch processor that translates markdown into multiple languages |
| [Streaming](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-llm-streaming) | ☆☆☆ <sup>*Dummy*</sup> | A real-time LLM streaming demo with user interrupt capability |
| [Chat Guardrail](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-chat-guardrail) | ☆☆☆ <sup>*Dummy*</sup> | A travel advisor chatbot that only processes travel-related queries |
| [Majority Vote](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-majority-vote) | ☆☆☆ <sup>*Dummy*</sup> | Improve reasoning accuracy by aggregating multiple solution attempts |
| [Map-Reduce](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-map-reduce) | ☆☆☆ <sup>*Dummy*</sup>  | Batch resume qualification using map-reduce pattern |
| [CLI HITL](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-cli-hitl) | ☆☆☆ <sup>*Dummy*</sup>  | A command-line joke generator with human-in-the-loop feedback |
| [Multi-Agent](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-multi-agent) | ★☆☆ <sup>*Beginner*</sup> | A Taboo word game for async communication between 2 agents |
| [Supervisor](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-supervisor) | ★☆☆ <sup>*Beginner*</sup> | Research agent is getting unreliable... Let's build a supervision process|
| [Parallel](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-parallel-batch) |  ★☆☆ <sup>*Beginner*</sup> | A parallel execution demo that shows 3x speedup |
| [Parallel Flow](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-parallel-batch-flow) | ★☆☆ <sup>*Beginner*</sup> | A parallel image processing showing 8x speedup |
| [Thinking](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-thinking) |  ★☆☆ <sup>*Beginner*</sup> | Solve complex reasoning problems through Chain-of-Thought |
| [Memory](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-chat-memory) |  ★☆☆ <sup>*Beginner*</sup> | A chat bot with short-term and long-term memory |
| [Text2SQL](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-text2sql) |  ★☆☆ <sup>*Beginner*</sup>  | Convert natural language to SQL queries with an auto-debug loop |
| [Code Generator](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-code-generator) | ★☆☆ <sup>*Beginner*</sup> | Generate test cases, implement solutions, and iteratively improve code |
| [MCP](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-mcp) |  ★☆☆ <sup>*Beginner*</sup> |  Agent using Model Context Protocol for numerical operations |
| [Agent Skills](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-agent-skills) |  ★☆☆ <sup>*Beginner*</sup> | Route requests to reusable markdown skills and apply them in an agent flow |
| [A2A](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-a2a) |  ★☆☆ <sup>*Beginner*</sup> | Agent wrapped with A2A protocol for inter-agent communication |
| [Streamlit FSM](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-streamlit-fsm) | ★☆☆ <sup>*Beginner*</sup> | Streamlit app with finite state machine for HITL image generation |
| [FastAPI WebSocket](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-fastapi-websocket) | ★☆☆ <sup>*Beginner*</sup> | Real-time chat interface with streaming LLM responses via WebSocket |
| [FastAPI Background](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-fastapi-background) | ★☆☆ <sup>*Beginner*</sup> | FastAPI app with background jobs and real-time progress via SSE |
| [Voice Chat](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-voice-chat) | ★☆☆ <sup>*Beginner*</sup> | An interactive voice chat application with VAD, STT, LLM, and TTS. |
| [Judge](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-judge) | ★☆☆ <sup>*Beginner*</sup> | LLM-as-Judge evaluator-optimizer loop for iterative content refinement |
| [Debate](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-debate) | ★☆☆ <sup>*Beginner*</sup> | Adversarial reasoning with two advocates and an impartial judge |
| [Agentic RAG](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-agentic-rag) | ★☆☆ <sup>*Beginner*</sup> | Agent-driven RAG that decides which documents to read |
| [Self-Healing Mermaid](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-self-healing-mermaid) | ★☆☆ <sup>*Beginner*</sup> | Generate Mermaid diagrams with automatic error recovery |
| [Heartbeat](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-heartbeat) | ★☆☆ <sup>*Beginner*</sup> | ClawBot-like always-on periodic monitoring with nested flows |
| [Lead Generation](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-lead-generation) | ★★☆ <sup>*Intermediate*</sup> | Sales pipeline: scrape, enrich, score, and personalize emails |
| [Newsletter](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-newsletter) | ★★☆ <sup>*Intermediate*</sup> | AI newsletter curation: search, filter, summarize, and format |
| [Invoice Processing](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-invoice) | ★★☆ <sup>*Intermediate*</sup> | Extract and validate invoice data from PDFs using vision |
| [NotebookLM](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-notebook-lm) | ★★☆ <sup>*Intermediate*</sup> | Turn documents into a podcast with two AI hosts |
| [Deep Research](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-deep-research) | ★★☆ <sup>*Intermediate*</sup> | Recursive map-reduce research with iterative refinement |
| [Coding Agent](https://github.com/The-Pocket/PocketFlow/tree/main/cookbook/pocketflow-coding-agent) | ★★★ <sup>*Advanced*</sup> | Production coding agent with 6 tools, memory, and patch-as-subflow |

</div>

👀 Want to see other tutorials for dummies? [Create an issue!](https://github.com/The-Pocket/PocketFlow/issues/new)

## How to Use Pocket Flow?

🚀 Through **Agentic Coding**—the fastest LLM App development paradigm-where *humans design* and *agents code*!

<br>
<div align="center">
  <a href="https://zacharyhuang.substack.com/p/agentic-coding-the-most-fun-way-to" target="_blank">
    <img src="https://substackcdn.com/image/fetch/f_auto,q_auto:good,fl_progressive:steep/https%3A%2F%2Fsubstack-post-media.s3.amazonaws.com%2Fpublic%2Fimages%2F423a39af-49e8-483b-bc5a-88cc764350c6_1050x588.png" width="700" alt="IMAGE ALT TEXT" style="cursor: pointer;">
  </a>
</div>
<br>

✨ Below are examples of more complex LLM Apps:

<div align="center">
  
|  App Name     |  Difficulty    | Topics  | Human Design | Agent Code |
| :-------------:  | :-------------: | :---------------------: |  :---: |  :---: |
| [Website Chatbot](https://github.com/The-Pocket/PocketFlow-Tutorial-Website-Chatbot) <br> <sup><sub>Turn your website into a 24/7 customer support genius</sup></sub> | ★★☆ <br> *Medium* | [Agent](https://the-pocket.github.io/PocketFlow/design_pattern/agent.html) <br> [RAG](https://the-pocket.github.io/PocketFlow/design_pattern/rag.html) | [Design Doc](https://github.com/The-Pocket/PocketFlow-Tutorial-Website-Chatbot/blob/main/docs/design.md) | [Flow Code](https://github.com/The-Pocket/PocketFlow-Tutorial-Website-Chatbot/blob/main/flow.py)
| [Danganronpa Simulator](https://github.com/The-Pocket/PocketFlow-Tutorial-Danganronpa-Simulator) <br> <sup><sub>Forget the Turing test. Danganronpa, the ultimate AI experiment!</sup></sub> | ★★★ <br> *Advanced*   | [Workflow](https://the-pocket.github.io/PocketFlow/design_pattern/workflow.html) <br> [Agent](https://the-pocket.github.io/PocketFlow/design_pattern/agent.html) | [Design Doc](https://github.com/The-Pocket/PocketFlow-Tutorial-Danganronpa-Simulator/blob/main/docs/design.md) | [Flow Code](https://github.com/The-Pocket/PocketFlow-Tutorial-Danganronpa-Simulator/blob/main/flow.py)
| [Codebase Knowledge Builder](https://github.com/The-Pocket/Tutorial-Codebase-Knowledge) <br> <sup><sub>Life's too short to stare at others' code in confusion</sup></sub> |  ★★☆ <br> *Medium* | [Workflow](https://the-pocket.github.io/PocketFlow/design_pattern/workflow.html) | [Design Doc](https://github.com/The-Pocket/Tutorial-Codebase-Knowledge/blob/main/docs/design.md) | [Flow Code](https://github.com/The-Pocket/Tutorial-Codebase-Knowledge/blob/main/flow.py)
| [Build Cursor with Cursor](https://github.com/The-Pocket/Tutorial-Cursor) <br> <sup><sub>We'll reach the singularity soon ...</sup></sub> | ★★★ <br> *Advanced*   | [Agent](https://the-pocket.github.io/PocketFlow/design_pattern/agent.html) | [Design Doc](https://github.com/The-Pocket/Tutorial-Cursor/blob/main/docs/design.md) | [Flow Code](https://github.com/The-Pocket/Tutorial-Cursor/blob/main/flow.py)
| [Ask AI Paul Graham](https://github.com/The-Pocket/Tutorial-YC-Partner) <br> <sup><sub>Ask AI Paul Graham, in case you don't get in</sup></sub> | ★★☆ <br> *Medium*  | [RAG](https://the-pocket.github.io/PocketFlow/design_pattern/rag.html) <br> [Map Reduce](https://the-pocket.github.io/PocketFlow/design_pattern/mapreduce.html) <br> [TTS](https://the-pocket.github.io/PocketFlow/utility_function/text_to_speech.html) | [Design Doc](https://github.com/The-Pocket/Tutorial-AI-Paul-Graham/blob/main/docs/design.md) | [Flow Code](https://github.com/The-Pocket/Tutorial-AI-Paul-Graham/blob/main/flow.py)
| [Youtube Summarizer](https://github.com/The-Pocket/Tutorial-Youtube-Made-Simple)  <br> <sup><sub> Explain YouTube Videos to you like you're 5 </sup></sub> | ★☆☆ <br> *Beginner*   | [Map Reduce](https://the-pocket.github.io/PocketFlow/design_pattern/mapreduce.html) |  [Design Doc](https://github.com/The-Pocket/Tutorial-Youtube-Made-Simple/blob/main/docs/design.md) | [Flow Code](https://github.com/The-Pocket/Tutorial-Youtube-Made-Simple/blob/main/flow.py)
| [Cold Opener Generator](https://github.com/The-Pocket/Tutorial-Cold-Email-Personalization)  <br> <sup><sub> Instant icebreakers that turn cold leads hot </sup></sub> | ★☆☆ <br> *Beginner*   | [Map Reduce](https://the-pocket.github.io/PocketFlow/design_pattern/mapreduce.html) <br> [Web Search](https://the-pocket.github.io/PocketFlow/utility_function/websearch.html) |  [Design Doc](https://github.com/The-Pocket/Tutorial-Cold-Email-Personalization/blob/master/docs/design.md) | [Flow Code](https://github.com/The-Pocket/Tutorial-Cold-Email-Personalization/blob/master/flow.py)


</div>

- Want to learn **Agentic Coding**?

  - Check out [my YouTube](https://www.youtube.com/@ZacharyLLM?sub_confirmation=1) for video tutorial on how some apps above are made!

  - Want to build your own LLM App? Read this [post](https://zacharyhuang.substack.com/p/agentic-coding-the-most-fun-way-to)! Start with [this template](https://github.com/The-Pocket/PocketFlow-Template-Python)!


