API reference

Integrations API reference

partner packages connecting LangChain and LangGraph to leading LLMs, vector stores, and MCP tools

Topics covered

Name	What it does
`ChatOpenAI`	Class
`OpenAIEmbeddings`	Class
`ChatAnthropic`	Class
`ChatGoogleGenerativeAI`	Class
`GoogleGenerativeAIEmbeddings`	Class
`ChatBedrock`	Class
`BedrockEmbeddings`	Class
`HuggingFaceEmbeddings`	Class
`ChatGroq`	Class
`ChatOllama`	Class
`OllamaEmbeddings`	Class
`MultiServerMCPClient`	Class
`PineconeVectorStore`	Class
`Chroma`	Class
`PGVector`	Class
`ChatMistralAI`	Class
`MistralAIEmbeddings`	Class
`ChatCohere`	Class
`CohereEmbeddings`	Class
`CohereRerank`	Class
`ChatVertexAI`	Class
`VertexAIEmbeddings`	Class
`ChatTogether`	Class
`ChatFireworks`	Class
`QdrantVectorStore`	Class
`FAISS`	Class
`Milvus`	Class
`WeaviateVectorStore`	Class
`TavilySearchResults`	Class
`DuckDuckGoSearchRun`	Class
`WikipediaQueryRun`	Class
`ArxivQueryRun`	Class
`StdioServerTransport`	Class
`SseServerTransport`	Class
`StreamlitCallbackHandler`	Class
`AzureChatOpenAI`	Class
`ChatXAI`	Class
`ChatDeepSeek`	Class
`ChatPerplexity`	Class
`ChatHuggingFace`	Class
`ChatNVIDIA`	Class
`ChatOpenRouter`	Class
`VoyageAIEmbeddings`	Class
`InMemoryVectorStore`	Class
`ElasticsearchStore`	Class
`MongoDBAtlasVectorSearch`	Class
`RedisVectorStore`	Class
`PyPDFLoader`	Class
`DoclingLoader`	Class
`TavilySearch`	Class
`MongoDBSaver`	Class

Name	What it does
`BaseMCPClient`	Interface
`VectorStoreRetriever`	Interface

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