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ChatBedrockConverse throws 'Unsupported content block type: tool_call' on tool_call content blocks it should skip

Status: Open.

#11476 In langchain-ai/langchainjs;

· Thomas Shappee (tshappee-veeva) opened on Aug 26, 2026

ChatAnthropic rejects supported mid-conversation system messages

Status: Open.

#11472 In langchain-ai/langchainjs;

· Soham Samal (sazuyakun) opened on Aug 25, 2026

Truncated streamed tool arguments are repaired into valid-looking tool_calls

Status: Open.

#11469 In langchain-ai/langchainjs;

· Sparky (Sparky579) opened on Aug 25, 2026

ChatOpenAI drops streamed tool calls when the server sends role: ""

Status: Open.

#11468 In langchain-ai/langchainjs;

· Sparky (Sparky579) opened on Aug 25, 2026

ChatOpenAI (Responses API, streaming): response_metadata.model_name is the requested alias, not the resolved model

bugSomething isn't workingSomething isn't working

Status: Open.

#11466 In langchain-ai/langchainjs;

· Simon (SiKreuz) opened on Aug 25, 2026

createAgent examples fail to save graph PNGs on Windows

Status: Open.

#11464 In langchain-ai/langchainjs;

· dvd233 (dvd233) opened on Aug 25, 2026

Responses API: audio content blocks are silently dropped on the v1 conversion path

Status: Open.

#11460 In langchain-ai/langchainjs;

· Maxim (mxmzb) opened on Aug 24, 2026

@langchain/openai: a caller-supplied User-Agent is emitted as a second header, so the transport sends a comma-joined value

Status: Open.

#11438 In langchain-ai/langchainjs;

· Linda Oraegbunam (obielin) opened on Aug 21, 2026

ProviderStrategy parses Gemini thought summaries as structured output

bugSomething isn't workingSomething isn't working

Status: Open.

#11435 In langchain-ai/langchainjs;

· Elie Rotenberg (elierotenberg) opened on Aug 21, 2026

@langchain/google uses an invalid endpoint for Vertex multi-regions

Status: Open.

#11432 In langchain-ai/langchainjs;

· Zexu Jin (jackjin1997) opened on Aug 21, 2026

llmOutput.tokenUsage is wrong on both streaming paths, so callback-based token tracking under-reports Gemini usage by orders of magnitude

Status: Open.

#11424 In langchain-ai/langchainjs;

· ainazulfiqar99acc opened on Aug 20, 2026

@langchain/google-genai: thoughtsTokenCount is dropped, so reasoning tokens are missing and input_tokens + output_tokens no longer equals total_tokens

Status: Open.

#11422 In langchain-ai/langchainjs;

· ainazulfiqar99acc opened on Aug 20, 2026