Search results

pass tool_call_id to on_tool_start callback

bugRelated to a bug, vulnerability, unexpected error with an existing featureRelated to a bug, vulnerability, unexpected error with an existing feature

core`langchain-core` package issues & PRs`langchain-core` package issues & PRs

external

langchain`langchain` package issues & PRs`langchain` package issues & PRs

openai`langchain-openai` package issues & PRs`langchain-openai` package issues & PRs

Status: Open.

Bug

#34849 In langchain-ai/langchain;

· lekhnath opened on Jan 23, 2026

Search bar input clears when clicking away and returning

external

feature requestRequest for an enhancement / additional functionalityRequest for an enhancement / additional functionality

Status: Open.

Feature

#34836 In langchain-ai/langchain;

· pateld6 opened on Jan 22, 2026

please allow packaging<0.27.0

core`langchain-core` package issues & PRs`langchain-core` package issues & PRs

external

feature requestRequest for an enhancement / additional functionalityRequest for an enhancement / additional functionality

langchain`langchain` package issues & PRs`langchain` package issues & PRs

Status: Open.

Feature

#34831 In langchain-ai/langchain;

· stonebig opened on Jan 21, 2026

Streaming blocked by Structured Output

core`langchain-core` package issues & PRs`langchain-core` package issues & PRs

external

langchain`langchain` package issues & PRs`langchain` package issues & PRs

openai`langchain-openai` package issues & PRs`langchain-openai` package issues & PRs

Status: Open.

Feature

#34818 In langchain-ai/langchain;

· jmoreno11 opened on Jan 20, 2026

Add a First‑Class Testing Framework for LangChain + LangGraph (Similar to JUnit/PyTest/LangTest)

cli`langchain-cli` package issues & PRs`langchain-cli` package issues & PRs

external

feature requestRequest for an enhancement / additional functionalityRequest for an enhancement / additional functionality

langchain`langchain` package issues & PRs`langchain` package issues & PRs

Status: Open.

Feature

#34810 In langchain-ai/langchain;

· rbhattarai opened on Jan 19, 2026

merge_dicts() concatenates parallel tool calls during streaming

bugRelated to a bug, vulnerability, unexpected error with an existing featureRelated to a bug, vulnerability, unexpected error with an existing feature

core`langchain-core` package issues & PRs`langchain-core` package issues & PRs

external

Status: Open.

Bug

#34807 In langchain-ai/langchain;

· saiparsa opened on Jan 19, 2026

Conform to Open Responses

external

feature requestRequest for an enhancement / additional functionalityRequest for an enhancement / additional functionality

langchain`langchain` package issues & PRs`langchain` package issues & PRs

Status: Open.

Feature

#34806 In langchain-ai/langchain;

· Doge-is-Dope opened on Jan 19, 2026

<code>TextSplitter</code> <code>chunk_overlap</code> is silently ignored unless <code>chunk_size</code> overflow occurs

bugRelated to a bug, vulnerability, unexpected error with an existing featureRelated to a bug, vulnerability, unexpected error with an existing feature

external

text-splittersRelated to the package `text-splitters`Related to the package `text-splitters`

Status: Open.

Bug

#34804 In langchain-ai/langchain;

· artyom-dehtiar opened on Jan 18, 2026

Unable to use agent response format with ProviderStrategy and ChatOpenAI

bugRelated to a bug, vulnerability, unexpected error with an existing featureRelated to a bug, vulnerability, unexpected error with an existing feature

external

langchain`langchain` package issues & PRs`langchain` package issues & PRs

openai`langchain-openai` package issues & PRs`langchain-openai` package issues & PRs

Status: Open.

Bug

#34797 In langchain-ai/langchain;

· liangjs opened on Jan 18, 2026

Unable to use agent response format when AutoStrategy selects ToolStrategy

bugRelated to a bug, vulnerability, unexpected error with an existing featureRelated to a bug, vulnerability, unexpected error with an existing feature

external

langchain`langchain` package issues & PRs`langchain` package issues & PRs

Status: Open.

Bug

#34796 In langchain-ai/langchain;

· liangjs opened on Jan 18, 2026

[Feature Request] Add MCP Discovery tool for dynamic MCP server discovery

external

Status: Open.

#34795 In langchain-ai/langchain;

· yksanjo opened on Jan 17, 2026

SummarizationMiddleware breaks Anthropic extended thinking by removing thinking blocks during active assistant turns

bugRelated to a bug, vulnerability, unexpected error with an existing featureRelated to a bug, vulnerability, unexpected error with an existing feature

external

langchain`langchain` package issues & PRs`langchain` package issues & PRs

Status: Open.

Bug

#34794 In langchain-ai/langchain;

· Nilesh3105 opened on Jan 17, 2026