Issues

• FEATURE] Qdrant: implement Spring Boot starter

  enhancementRAGSpring Boot
  langchain4j/langchain4j#4925 · Filter by author Yahid-Basha opened on Apr 15, 2026
  1

  

• [BUG] SpringRestClient silently uses Apache HttpClient 5, causing streaming tokens to arrive in bursts instead of real-time

  bugHTTPSpring Boot
  langchain4j/langchain4j#4918 · Filter by author aedanilyak opened on Apr 14, 2026
  19

• [FEATURE] systemMessageProvider should give visbility into current in-flight user messge.

  AI ServicesCustomizationenhancement
  langchain4j/langchain4j#4909 · Filter by author bitsofinfo opened on Apr 13, 2026
  5

• [BUG] Error when calling MCP using StreamableHttpMcpTransport

  bugMCP
  langchain4j/langchain4j#4906 · Filter by author jeff411226 opened on Apr 13, 2026
  4

• Need help: strange question tool_use ids were found without tool_result blocks immediately

  langchain4j/langchain4j#4900 · Filter by author bajie-git opened on Apr 13, 2026
  7

• [FEATURE] Add zh Doc

  enhancement
  langchain4j/langchain4j#4895 · Filter by author jouzi5 opened on Apr 11, 2026
  1

• 2.0: Revisit UserMessage transformations during AI Service invocation

  langchain4j/langchain4j#4884 · Filter by author dliubarskyi opened on Apr 9, 2026 · 2.0.0
  

• 2.0: Consider removing legacy structured output functionality

  enhancementStructured Outputs
  langchain4j/langchain4j#4883 · Filter by author dliubarskyi opened on Apr 9, 2026 · 2.0.0
  

• [FEATURE] Future roadmap for LangChain Deep-Agents and Harness Engineering support

  Agenticenhancement
  langchain4j/langchain4j#4855 · Filter by author MoonEsther opened on Apr 3, 2026
  7

• [FEATURE] Extended Thinking in Vertex AI Anthropic Streaming Model

  enhancementThinking/Reasoning
  langchain4j/langchain4j#4852 · Filter by author danieldevere2 opened on Apr 2, 2026
  3

  

• responseContext.chatResponse().aiMessage() 获取的 AiMessage 中的 attributes 是否可以修改为可修改集合类型 ollama

  enhancement
  langchain4j/langchain4j#4844 · Filter by author lincaizheng opened on Apr 1, 2026
  4

• [Bug] VertexAiEmbeddingModel: explicit credentials not propagated to llmUtilitySettings (token counting falls back to ADC)

  Gemini
  langchain4j/langchain4j#4837 · Filter by author cedricfopa opened on Mar 31, 2026
  2

• [FEATURE] Support multi-domain metadata filtering in RAG document retrieval

  RAG
  langchain4j/langchain4j#4831 · Filter by author sachin-gupta99 opened on Mar 30, 2026
  4

• 2.0: Merge maxTokens/maxCompletionTokens/maxOutputTokens

  langchain4j/langchain4j#4823 · Filter by author dliubarskyi opened on Mar 30, 2026 · 2.0.0
  

• [FEATURE] Add EmbeddingSearchRequest.Filter support to AstraDbEmbeddingStore

  enhancementRAG
  langchain4j/langchain4j#4819 · Filter by author husseinvr97 opened on Mar 29, 2026
  1

• I want to directly run any ONNX model （such as YOLOv8, classification, detection, segmentation, and generative LLM)

  enhancement
  langchain4j/langchain4j#4774 · Filter by author smileyboy2019 opened on Mar 25, 2026
  4

• [FEATURE] Expose full Tavily Search API parameters in TavilyWebSearchEngine

  langchain4j/langchain4j#4771 · Filter by author pjmalandrino opened on Mar 24, 2026

• Setup Checkstyle for Static Code Analysis and Maintain consistency over the codebase.

  langchain4j/langchain4j#4770 · Filter by author DakshRJain737 opened on Mar 24, 2026
  17

• [FEATURE] Add a tool execution routing attribute to distinguish system-executed tools and user-participated tools

  AgenticAI ServicesTools
  langchain4j/langchain4j#4767 · Filter by author zhanghj-java opened on Mar 24, 2026
  1

• [FEATURE] Support polymorphism in typed output

  enhancement
  langchain4j/langchain4j#4766 · Filter by author alan-atkinson opened on Mar 23, 2026
  1

  

• [FEATURE] Structured outputs: graceful enum fallback instead of InvalidFormatException on unknown values

  enhancementError HandlingStructured Outputs
  langchain4j/langchain4j#4763 · Filter by author mmogley opened on Mar 23, 2026
  2

• [FEATURE] SQL-backed persistent ChatMemory module.

  enhancementMemory
  langchain4j/langchain4j#4760 · Filter by author ghiloufibg opened on Mar 21, 2026
  9

• Introduce typed ModerationResponseMetadata to replace Map<String, Object> in ModerationResponse

  Moderation
  langchain4j/langchain4j#4754 · Filter by author jeanbisutti opened on Mar 20, 2026
  1

• Suggest adding Graph (graph workflow)

  Agenticenhancement
  langchain4j/langchain4j#4748 · Filter by author smileyboy2019 opened on Mar 20, 2026
  7

• [FEATURE] Ollama should send thinking back to the LLM

  enhancementThinking/Reasoning
  langchain4j/langchain4j#4743 · Filter by author ap-actoron opened on Mar 19, 2026
  6