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Langchain Langsmith

# [Tutorial -- Learning is not just about technology, but also about dreams!](https://example.com/) * (https://example.com/) * (https://example.com/html/html-tutorial.html) * (https://example.com/js/js-tutorial.html) * (https://example.com/css/css-tutorial.html) * (javascript:void(0);) * (https://example.com/react/react-tutorial.html) * (https://example.com/python3/python3-tutorial.html) * (https://example.com/java/java-tutorial.html) * (https://example.com/cprogramming/c-tutorial.html) * [C++](https://example.com/cplusplus/cpp-tutorial.html) * [C#](https://example.com/csharp/csharp-tutorial.html) * (javascript:void(0);) * (https://example.com/go/go-tutorial.html) * (https://example.com/sql/sql-tutorial.html) * (https://example.com/linux/linux-tutorial.html) * (https://example.com/vscode/vscode-tutorial.html) * (javascript:void(0);) * (https://example.com/git/git-tutorial.html) * (https://example.com/browser-history) * (https://example.com/) * (https://example.com/html/html-tutorial.html) * (https://example.com/css/css-tutorial.html) * (https://example.com/js/js-tutorial.html) * (https://example.com/browser-history) * (javascript:void(0)) * (https://example.com/vue3/vue3-tutorial.html) * (https://example.com/vue/vue-tutorial.html) * (https://example.com/bootstrap/bootstrap-tutorial.html) * (https://example.com/bootstrap4/bootstrap4-tutorial.html) * (https://example.com/bootstrap5/bootstrap5-tutorial.html) * (https://example.com/ml/ml-tutorial.html) * (https://example.com/pytorch/pytorch-tutorial.html) * (https://example.com/tensorflow/tensorflow-tutorial.html) * (https://example.com/sklearn/sklearn-tutorial.html) * (https://example.com/nlp/nlp-tutorial.html) * (https://example.com/ai-agent/ai-agent-tutorial.html) * (https://example.com/ollama/ollama-tutorial.html) * (https://example.com/claude-code/coding-plan.html) LangChain Tutorial (https://example.com/langchain/langchain-tutorial.html "LangChain Tutorial")(https://example.com/langchain/langchain-intro.html "LangChain Introduction")(https://example.com/langchain/langchain-env-setup.html "LangChain Environment Setup")(https://example.com/langchain/langchain-deepseek.html "LangChain Integrate DeepSeek") ## Agent Development Configuration (https://example.com/langchain/langchain-first-agent.html "First LangChain Agent")[LangChain Model Calling β€” init_chat_model() functions](https://example.com/langchain/langchain-init_chat_mode.html "LangChain Model Calling β€” init_chat_model() functions β€” init_chat_model() functions")(https://example.com/langchain/langchain-model-params.html "LangChain Chat Model Common Parameters")(https://example.com/langchain/langchain-model-advanced.html "LangChain Chat Model Advanced Usage")(https://example.com/langchain/langchain-messages.html "LangChain Message Types")[LangChain @tool](https://example.com/langchain/langchain-tool-basics.html "LangChain @tool Decoratorsβ€”β€”Defining Tools")(https://example.com/langchain/langchain-tool-advanced.html "LangChain Tool Advanced Features")[LangChain Tool Access β€” InjectedState and InjectedStore](https://example.com/langchain/langchain-state-store.html "LangChain Tool Access β€” InjectedState and InjectedStore β€” InjectedState and InjectedStore")[LangChain create_agent() functions](https://example.com/langchain/langchain-create_agent.html "LangChain create_agent() functions")(https://example.com/langchain/langchain-agent-workflow.html "LangChain Agent Workflow")(https://example.com/langchain/langchain-agent-state.html "LangChain AgentState State Management")[LangChain Prompts β€” System Prompt and Dynamic Prompt](https://example.com/langchain/langchain-system-prompt.html "LangChain Prompts β€” System Prompt and Dynamic Prompt β€” System Prompt and Dynamic Prompt")(https://example.com/langchain/langchain-streaming.html "LangChain Streaming Output Streaming")(https://example.com/langchain/langchain-structured-output.html "LangChain Structured Output")(https://example.com/langchain/langchain-structured-output-strategies.html "LangChain Output Strategy")[LangChain Middleware (Middleware)](https://example.com/langchain/langchain-middleware-concepts.html "LangChain Middleware (Middleware)(MiddlewareοΌ‰")[LangChain Middleware (Middleware)Hook](https://example.com/langchain/langchain-before-after-model.html "LangChain Middleware (Middleware)Hook β€” @before_model and @after_model")[LangChain Model Calling β€” init_chat_model() functionsIntercept](https://example.com/langchain/langchain-wrap-model-call.html "LangChain Model Calling β€” init_chat_model() functionsIntercept β€” @wrap_model_call")(https://example.com/langchain/langchain-wrap-tool-call.html "LangChain Tool Call Interception β€” @wrap_tool_call")[LangChain @before_agent](https://example.com/langchain/langchain-before-after-agent.html "LangChain @before_agent and @after_agent")(https://example.com/langchain/langchain-checkpointer.html "LangChain Conversation Memory β€” Checkpointer")(https://example.com/langchain/langchain-store.html "LangChain Cross-session Storage β€”β€” Store")(https://example.com/langchain/langchain-human-in-the-loop.html "LangChain Human-in-the-loop")(https://example.com/langchain/langchain-multi-agent.html "LangChain Multi Agent")(https://example.com/langchain/langchain-rag-overview.html "LangChain RAG")(https://example.com/langchain/langchain-document-loaders.html "LangChain Document LoadingandSplit")(https://example.com/langchain/langchainrag-agent.html "LangChain Building RAG Agent")(https://example.com/langchain/langchain-project-customer-service.html "LangChain Intelligent Customer Service Bot")(https://example.com/langchain/langchain-project-knowledge-qa.html "LangChain Personal Knowledge BaseQuestion Answering System")(https://example.com/langchain/langchain-project-personal-assistant.html "LangChain MultiTool Personal Assistant")(https://example.com/langchain/langchain-langsmith.html "LangChain LangSmith β€” Observability")(https://example.com/langchain/langchain-error-handling.html "LangChain Error HandlingandDebug") ## Reference Manual (https://example.com/langchain/langchain-chat-model-api.html "LangChain Chat Model API")(https://example.com/langchain/langchain-agent-api.html "LangChain Agent API")(https://example.com/langchain/langchain-messages-api.html "LangChain Messages API")[LangChain Tools
← Langchain Chat Model ApiLangchain Project Knowledge Qa β†’