├── static
├── LangChain-logo.svg
└── LangGraph wordmark - dark.svg
├── README.md
└── LICENSE
/static/LangChain-logo.svg:
--------------------------------------------------------------------------------
1 |
2 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # LangChain- Develop AI Agents with LangChain & LangGraph 🦜🔗
2 |
3 | **Learn LangChain and LangGraph by building real world AI Agents (Python, Latest Version V.1.0+)**
4 |
5 | This course is designed to teach you how to QUICKLY harness the power of the LangChain library for LLM applications. Build 3 end-to-end working LangChain based generative AI applications with no fluff, no toy examples - just real projects using real APIs and real-world skills.
6 |
7 | 
8 | 
9 |
10 | [](https://twitter.com/EdenMarco177)
11 | [](LICENSE)
12 |
13 | [](https://www.udemy.com/course/langchain/?couponCode=DEC-2025)
14 |
15 |
16 |
17 | ## 💡 What You'll Build
18 |
19 | This course takes you through building 7 real-world AI agent projects, from simple hello-world applications to advanced agentic systems:
20 |
21 | | Project | Type | Description |
22 | |---------|------|-------------|
23 | | 👋 [LangChain Hello World](https://github.com/emarco177/langchain-course/tree/project/hello-world) | Branch (`project/hello-world`) | Your first AI agent - basic structure and LLM integration |
24 | | 🔎 [Modern Search Agent](https://github.com/emarco177/ice_breaker/tree/project/search-agent) | Branch (`project/search-agent`) | Build search agents using LangChain v.1's `create_agent` interface with custom tools, Tavily integration, and structured outputs |
25 | | 🔎 [Classic ReAct Search Agent](https://github.com/emarco177/langchain-course/tree/project/ReAct-search-agent) | Branch (`project/ReAct-search-agent`) | ReAct agent with search capabilities using the original `create_react_agent` from langchain-classic |
26 | | 🧠 [ReAct Algorithm Under the Hood](https://github.com/emarco177/langchain-course/tree/project/ReAct-Algo) | Branch (`project/ReAct-Algo`) | Understanding reasoning and acting patterns in AI agents |
27 | | 📄 [RAG Gist](https://github.com/emarco177/langchain-course/tree/project/rag-gist) | Branch (`project/rag-gist`) | The gist of retrieval-augmented generation |
28 | | 📚 [Documentation Helper](https://github.com/emarco177/documentation-helper) | External Repo | Intelligent documentation assistant |
29 | | 💻 [Code Interpreter](https://github.com/emarco177/langchain-course/tree/project/code-interpreter) | Branch (`project/code-interpreter`) | AI-powered code execution and analysis |
30 | | 🪞 [Reflection Agent](https://github.com/emarco177/langgraph-course/tree/project/reflection-agent) | External Repo | Self-improving agent with reflection and critique capabilities |
31 | | 🔄 [Reflexion Agent](https://github.com/emarco177/langgraph-course/tree/project/reflexion-agent) | External Repo | Advanced self-correcting agent using reflexion techniques |
32 | | 🤖 [Agentic RAG](https://github.com/emarco177/langgraph-course/tree/project/agentic-rag) | External Repo | Advanced retrieval-augmented generation system |
33 |
34 | ## 📚 Course Highlights
35 |
36 | - **7 Complete Projects** - From beginner to advanced implementations including Ice Breaker, Documentation Helper, and Code Interpreter
37 | - **Real-World Applications** - Build agents that solve actual problems with live APIs
38 | - **Modern Tech Stack** - LangChain v0.3+, LangGraph, Pinecone, FAISS, Streamlit
39 | - **Practical Skills** - Learn RAG, vector databases, prompt engineering, and agent workflows
40 | - **Interactive Learning** - Follow commits chronologically for step-by-step learning
41 |
42 | ## 🤔 Learning Path
43 |
44 | ### Phase 1: Foundations
45 | 1. **Hello World Chain** - Basic agent structure and LLM integration
46 | 2. **Code Interpreter** - Tool calling and code execution capabilities
47 |
48 | ### Phase 2: Real-World Applications
49 | 3. **Ice Breaker** - Data collection and social media integration
50 | 4. **Documentation Helper** - RAG implementation and knowledge management
51 |
52 | ### Phase 3: Advanced Concepts
53 | 5. **Blog Analyzer** - Multi-step reasoning and content analysis
54 | 6. **Agentic RAG** - Self-correcting agents with memory and planning
55 |
56 | ## ▶️ Getting Started
57 |
58 | ### 🛠️ Prerequisites
59 | - **This is not a beginner course** - Basic software engineering concepts needed
60 | - Familiarity with: git, Python, environment variables, classes, testing and debugging
61 | - Python 3.10+
62 | - Any Python package manager (uv, poetry, pipenv) - but NOT conda!
63 | - Access to an LLM (can be open source via Ollama, or cloud providers like OpenAI, Anthropic, Gemini)
64 | - No Machine Learning experience needed
65 |
66 | ### ⚙️ Setup Instructions
67 |
68 | 1. **Clone the repository**
69 | ```bash
70 | git clone https://github.com/emarco177/langchain-course
71 | cd langchain-course
72 | ```
73 | 2. **Choose your learning path**
74 |
75 | **For branch-based projects:**
76 | ```bash
77 | # Start with Hello World
78 | git checkout project/hello-world
79 | uv sync
80 | uv run python main.py
81 |
82 | # Progress to Code Interpreter
83 | git checkout project/code-interpreter
84 | uv sync
85 | uv run python main.py
86 | ```
87 |
88 | **For external repository projects:**
89 | ```bash
90 | # Clone specific project repositories
91 | git clone https://github.com/emarco177/ice_breaker
92 | cd ice_breaker
93 | # Follow project-specific setup instructions
94 | ```
95 |
96 | 3. **Follow the commits**
97 | - Each commit represents a lesson or feature implementation
98 | - Use `git log --oneline` to see the learning progression
99 | - Checkout previous commits to understand the development process
100 |
101 | **External Projects:**
102 | - [Ice Breaker](https://github.com/emarco177/ice_breaker) - Social media profile analyzer
103 | - [Medium Analyzer](https://github.com/emarco177/blog-analyzer) - Content analysis and insights generator
104 | - [Documentation Helper](https://github.com/emarco177/documentation-helper) - AI documentation assistant
105 | - [Reflection Agent](https://github.com/emarco177/langgraph-course/tree/project/reflection-agent) - Self-improving agent with reflection and critique capabilities
106 | - [Reflexion Agent](https://github.com/emarco177/langgraph-course/tree/project/reflexion-agent) - Advanced self-correcting agent using reflexion techniques
107 | - [Agentic RAG](https://github.com/emarco177/langgraph-course/tree/project/agentic-rag) - Advanced retrieval-augmented generation system
108 |
109 |
110 | ## 📚 Learning Objectives
111 |
112 | By the end of this course, you'll be able to:
113 |
114 | - Build AI agents from scratch using modern frameworks
115 | - Implement tool calling and external API integrations
116 | - Create RAG systems with vector databases
117 | - Design multi-step reasoning workflows
118 | - Deploy agents to production environments
119 | - Handle error correction and self-improvement in agents
120 | - Optimize agent performance and cost efficiency
121 |
122 |
123 |
124 |
125 |
126 | ## 🙏 Acknowledgements
127 |
128 | Big thanks to the **LangChain / LangGraph** team and their excellent [documentation and tutorials](https://langchain-ai.github.io/langgraph/tutorials/introduction/) that make this course possible.
129 |
130 | ## 🌟 Support
131 |
132 | If you find this project helpful, please consider:
133 | - ⭐ Starring the repository
134 | - 🐛 Reporting issues
135 | - 💡 Contributing improvements
136 | - 📢 Sharing with others
137 |
138 | ---
139 |
140 |
141 |
142 | ### 🔗 Connect with Me
143 |
144 | [](https://www.udemy.com/course/langchain/?referralCode=D981B8213164A3EA91AC)
145 | [](https://www.linkedin.com/in/eden-marco/)
146 | [](https://twitter.com/EdenEmarco177)
147 |
148 | **Built with ❤️ by Eden Marco**
149 |
150 |
151 |
152 |
--------------------------------------------------------------------------------
/LICENSE:
--------------------------------------------------------------------------------
1 | Apache License
2 | Version 2.0, January 2004
3 | http://www.apache.org/licenses/
4 |
5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
6 |
7 | 1. Definitions.
8 |
9 | "License" shall mean the terms and conditions for use, reproduction,
10 | and distribution as defined by Sections 1 through 9 of this document.
11 |
12 | "Licensor" shall mean the copyright owner or entity authorized by
13 | the copyright owner that is granting the License.
14 |
15 | "Legal Entity" shall mean the union of the acting entity and all
16 | other entities that control, are controlled by, or are under common
17 | control with that entity. For the purposes of this definition,
18 | "control" means (i) the power, direct or indirect, to cause the
19 | direction or management of such entity, whether by contract or
20 | otherwise, or (ii) ownership of fifty percent (50%) or more of the
21 | outstanding shares, or (iii) beneficial ownership of such entity.
22 |
23 | "You" (or "Your") shall mean an individual or Legal Entity
24 | exercising permissions granted by this License.
25 |
26 | "Source" form shall mean the preferred form for making modifications,
27 | including but not limited to software source code, documentation
28 | source, and configuration files.
29 |
30 | "Object" form shall mean any form resulting from mechanical
31 | transformation or translation of a Source form, including but
32 | not limited to compiled object code, generated documentation,
33 | and conversions to other media types.
34 |
35 | "Work" shall mean the work of authorship, whether in Source or
36 | Object form, made available under the License, as indicated by a
37 | copyright notice that is included in or attached to the work
38 | (an example is provided in the Appendix below).
39 |
40 | "Derivative Works" shall mean any work, whether in Source or Object
41 | form, that is based on (or derived from) the Work and for which the
42 | editorial revisions, annotations, elaborations, or other modifications
43 | represent, as a whole, an original work of authorship. For the purposes
44 | of this License, Derivative Works shall not include works that remain
45 | separable from, or merely link (or bind by name) to the interfaces of,
46 | the Work and Derivative Works thereof.
47 |
48 | "Contribution" shall mean any work of authorship, including
49 | the original version of the Work and any modifications or additions
50 | to that Work or Derivative Works thereof, that is intentionally
51 | submitted to Licensor for inclusion in the Work by the copyright owner
52 | or by an individual or Legal Entity authorized to submit on behalf of
53 | the copyright owner. For the purposes of this definition, "submitted"
54 | means any form of electronic, verbal, or written communication sent
55 | to the Licensor or its representatives, including but not limited to
56 | communication on electronic mailing lists, source code control systems,
57 | and issue tracking systems that are managed by, or on behalf of, the
58 | Licensor for the purpose of discussing and improving the Work, but
59 | excluding communication that is conspicuously marked or otherwise
60 | designated in writing by the copyright owner as "Not a Contribution."
61 |
62 | "Contributor" shall mean Licensor and any individual or Legal Entity
63 | on behalf of whom a Contribution has been received by Licensor and
64 | subsequently incorporated within the Work.
65 |
66 | 2. Grant of Copyright License. Subject to the terms and conditions of
67 | this License, each Contributor hereby grants to You a perpetual,
68 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable
69 | copyright license to reproduce, prepare Derivative Works of,
70 | publicly display, publicly perform, sublicense, and distribute the
71 | Work and such Derivative Works in Source or Object form.
72 |
73 | 3. Grant of Patent License. Subject to the terms and conditions of
74 | this License, each Contributor hereby grants to You a perpetual,
75 | worldwide, non-exclusive, no-charge, royalty-free, irrevocable
76 | (except as stated in this section) patent license to make, have made,
77 | use, offer to sell, sell, import, and otherwise transfer the Work,
78 | where such license applies only to those patent claims licensable
79 | by such Contributor that are necessarily infringed by their
80 | Contribution(s) alone or by combination of their Contribution(s)
81 | with the Work to which such Contribution(s) was submitted. If You
82 | institute patent litigation against any entity (including a
83 | cross-claim or counterclaim in a lawsuit) alleging that the Work
84 | or a Contribution incorporated within the Work constitutes direct
85 | or contributory patent infringement, then any patent licenses
86 | granted to You under this License for that Work shall terminate
87 | as of the date such litigation is filed.
88 |
89 | 4. Redistribution. You may reproduce and distribute copies of the
90 | Work or Derivative Works thereof in any medium, with or without
91 | modifications, and in Source or Object form, provided that You
92 | meet the following conditions:
93 |
94 | (a) You must give any other recipients of the Work or
95 | Derivative Works a copy of this License; and
96 |
97 | (b) You must cause any modified files to carry prominent notices
98 | stating that You changed the files; and
99 |
100 | (c) You must retain, in the Source form of any Derivative Works
101 | that You distribute, all copyright, patent, trademark, and
102 | attribution notices from the Source form of the Work,
103 | excluding those notices that do not pertain to any part of
104 | the Derivative Works; and
105 |
106 | (d) If the Work includes a "NOTICE" text file as part of its
107 | distribution, then any Derivative Works that You distribute must
108 | include a readable copy of the attribution notices contained
109 | within such NOTICE file, excluding those notices that do not
110 | pertain to any part of the Derivative Works, in at least one
111 | of the following places: within a NOTICE text file distributed
112 | as part of the Derivative Works; within the Source form or
113 | documentation, if provided along with the Derivative Works; or,
114 | within a display generated by the Derivative Works, if and
115 | wherever such third-party notices normally appear. The contents
116 | of the NOTICE file are for informational purposes only and
117 | do not modify the License. You may add Your own attribution
118 | notices within Derivative Works that You distribute, alongside
119 | or as an addendum to the NOTICE text from the Work, provided
120 | that such additional attribution notices cannot be construed
121 | as modifying the License.
122 |
123 | You may add Your own copyright statement to Your modifications and
124 | may provide additional or different license terms and conditions
125 | for use, reproduction, or distribution of Your modifications, or
126 | for any such Derivative Works as a whole, provided Your use,
127 | reproduction, and distribution of the Work otherwise complies with
128 | the conditions stated in this License.
129 |
130 | 5. Submission of Contributions. Unless You explicitly state otherwise,
131 | any Contribution intentionally submitted for inclusion in the Work
132 | by You to the Licensor shall be under the terms and conditions of
133 | this License, without any additional terms or conditions.
134 | Notwithstanding the above, nothing herein shall supersede or modify
135 | the terms of any separate license agreement you may have executed
136 | with Licensor regarding such Contributions.
137 |
138 | 6. Trademarks. This License does not grant permission to use the trade
139 | names, trademarks, service marks, or product names of the Licensor,
140 | except as required for reasonable and customary use in describing the
141 | origin of the Work and reproducing the content of the NOTICE file.
142 |
143 | 7. Disclaimer of Warranty. Unless required by applicable law or
144 | agreed to in writing, Licensor provides the Work (and each
145 | Contributor provides its Contributions) on an "AS IS" BASIS,
146 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
147 | implied, including, without limitation, any warranties or conditions
148 | of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
149 | PARTICULAR PURPOSE. You are solely responsible for determining the
150 | appropriateness of using or redistributing the Work and assume any
151 | risks associated with Your exercise of permissions under this License.
152 |
153 | 8. Limitation of Liability. In no event and under no legal theory,
154 | whether in tort (including negligence), contract, or otherwise,
155 | unless required by applicable law (such as deliberate and grossly
156 | negligent acts) or agreed to in writing, shall any Contributor be
157 | liable to You for damages, including any direct, indirect, special,
158 | incidental, or consequential damages of any character arising as a
159 | result of this License or out of the use or inability to use the
160 | Work (including but not limited to damages for loss of goodwill,
161 | work stoppage, computer failure or malfunction, or any and all
162 | other commercial damages or losses), even if such Contributor
163 | has been advised of the possibility of such damages.
164 |
165 | 9. Accepting Warranty or Additional Liability. While redistributing
166 | the Work or Derivative Works thereof, You may choose to offer,
167 | and charge a fee for, acceptance of support, warranty, indemnity,
168 | or other liability obligations and/or rights consistent with this
169 | License. However, in accepting such obligations, You may act only
170 | on Your own behalf and on Your sole responsibility, not on behalf
171 | of any other Contributor, and only if You agree to indemnify,
172 | defend, and hold each Contributor harmless for any liability
173 | incurred by, or claims asserted against, such Contributor by reason
174 | of your accepting any such warranty or additional liability.
175 |
176 | END OF TERMS AND CONDITIONS
177 |
178 | APPENDIX: How to apply the Apache License to your work.
179 |
180 | To apply the Apache License to your work, attach the following
181 | boilerplate notice, with the fields enclosed by brackets "[]"
182 | replaced with your own identifying information. (Don't include
183 | the brackets!) The text should be enclosed in the appropriate
184 | comment syntax for the file format. We also recommend that a
185 | file or class name and description of purpose be included on the
186 | same "printed page" as the copyright notice for easier
187 | identification within third-party archives.
188 |
189 | Copyright [yyyy] [name of copyright owner]
190 |
191 | Licensed under the Apache License, Version 2.0 (the "License");
192 | you may not use this file except in compliance with the License.
193 | You may obtain a copy of the License at
194 |
195 | http://www.apache.org/licenses/LICENSE-2.0
196 |
197 | Unless required by applicable law or agreed to in writing, software
198 | distributed under the License is distributed on an "AS IS" BASIS,
199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
200 | See the License for the specific language governing permissions and
201 | limitations under the License.
202 |
--------------------------------------------------------------------------------
/static/LangGraph wordmark - dark.svg:
--------------------------------------------------------------------------------
1 |
13 |
--------------------------------------------------------------------------------