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Module 1 · Basic abilities
1 1.1a Basic model
2 1.1b Prompting
3 1.2a Tools
4 1.2b Web Search
5 1.3 Memory
6 1.4 Multimodal
7 1.5 Personal Chef
SUM Module Summary
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LANGCHAIN MODULE 1 · SUMMARY

LangChain basic capabilities
Foundations for LangChain Agents

From model calling, prompt engineering, tool calling, web search, memory, multimodality, to personal chef Agent projects.

7lessons
6core skills
1project
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Learning Map
1
Model
Model
Initializing the model, sending messages, and reading responses are the basis for all subsequent Agent capabilities.
2
Prompt
Prompt
Improve model reliability with system prompts, few-shots, and structured output.
3
Tools
Tools
Connect Python functions, Web Search, and multimodal input to the Agent.
4
Memory
Memory
Use checkpointer and thread_id to keep conversations contextual across rounds.
5
Project
Project
Combine the previous capabilities into a complete application such as Personal Chef.
Lesson Summary
1

1.1a Foundational Models

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Model initialization, HumanMessage/AIMessage, and basic invoke process.

  • init_chat_model
  • messages
  • response
2

1.1b Prompting

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system prompt, few-shot, structured prompts, and Pydantic output.

  • system_prompt
  • few-shot
  • structured output
3

1.2a Tools

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@tool, tool description, how the Agent decides whether to call the tool.

  • @tool
  • tool calls
  • Agent
4

1.2b Web Search

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Supplement real-time external knowledge with search tools and let Agents aggregate the results.

  • Tavily
  • search
  • external knowledge
5

1.3 Memory

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Use checkpointer and thread_id to establish multi-round conversation memory.

  • memory
  • thread_id
  • checkpointer
6

1.4 Multimodal

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Let messages carry multi-modal content such as pictures, and expand model input forms.

  • image input
  • content blocks
  • vision
7

1.5 Personal Chef

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Combine models, tips, tools, and memories to build a personal chef agent.

  • project
  • recipe
  • agent workflow
Completion Criteria