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createAgent with responseFormat silently returns undefined structuredResponse when LLM output doesn't match schema

bugSomething isn't workingSomething isn't working

Status: Open.

#10878 In langchain-ai/langchainjs;

· Voddam Vignesh (vignesh-gep) opened on May 9, 2026

[Feature Request] Support MiniMax chatcompletion_v2 API endpoint

bugSomething isn't workingSomething isn't working

Status: Open.

#10876 In langchain-ai/langchainjs;

· lanrenm opened on May 9, 2026

AzureChatOpenAI: deployment name missing from callback/tracing run data (ls_model_name defaults to gpt-3.5-turbo)

Status: Open.

#10874 In langchain-ai/langchainjs;

· PengF (fpfp100) opened on May 8, 2026

ChatOpenAI Responses API drops encrypted_content from reasoning items in streaming converter

Status: Open.

#10844 In langchain-ai/langchainjs;

· Jason Taylor (thetizzo) opened on May 7, 2026

CJS export wraps uuid.v4 in module object, breaks langchain@1.3.5 summarization middleware

bugSomething isn't workingSomething isn't working

Status: Open.

#10827 In langchain-ai/langchainjs;

· Simon (SiKreuz) opened on May 5, 2026

feat(mcp-adapters): MultiServerMCPClient initializes servers sequentially, causing slow startup

Status: Open.

#10825 In langchain-ai/langchainjs;

· ssabariram opened on May 4, 2026

Title: Feature Request / Bug: Cannot mix Gemini native tools and standard LangChain tools in the same request (@langchain/google-genai)

bugSomething isn't workingSomething isn't working

Status: Open.

#10819 In langchain-ai/langchainjs;

· SHADOW (kshadow07) opened on May 2, 2026

bug(langchain): initChatModel provider packages excluded from esbuild bundles

bugSomething isn't workingSomething isn't working

Status: Open.

#10818 In langchain-ai/langchainjs;

· Alexei Lexx (alexei-lexx) opened on May 2, 2026

@langchain/aws crashes on empty AIMessage text blocks in Bedrock Converse conversion

Status: Open.

#10782 In langchain-ai/langchainjs;

· Quentin Georget (tinque) opened on Apr 29, 2026

Hardcoded Base URL prevents MongoDB Atlas Vector Search integration ai.mongodb and ai.voyageai

bugSomething isn't workingSomething isn't working

Status: Open.

#10778 In langchain-ai/langchainjs;

· Rodrigo Brocchi (brocchirodrigo) opened on Apr 28, 2026

@langchain/anthropic streaming leaves malformed thinking blocks (missing thinking text) in AIMessage content, breaking multi-turn replay with adaptive thinking

bugSomething isn't workingSomething isn't working

Status: Open.

#10744 In langchain-ai/langchainjs;

· Seth Fiawoo (syfiawoo) opened on Apr 23, 2026

@langchain/google-genai: TypeError in convertResponseContentToChatGenerationChunk when streaming candidate has no content (partial fix in #10319)

Status: Open.

#10741 In langchain-ai/langchainjs;

· Kavika (kavika-1) opened on Apr 23, 2026