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Docs: add Superlinked (SIE) embeddings integration page

external

Status: Open.

#36712 In langchain-ai/langchain;

· Filip Makraduli (fm1320) opened on Apr 14, 2026

Fix typo in Visitor._validate_func error message for operators

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

#36701 In langchain-ai/langchain;

· eye-gu (eye-gu) opened on Apr 13, 2026

Add ToolArgValidationMiddleware — a new agent middleware that validates LLM-generated tool-call arguments

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

#36700 In langchain-ai/langchain;

· S3rj (Serjbory) opened on Apr 13, 2026

ShellSession times out when stdout has no trailing newline and the done marker is appended to the same line

external

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

Status: Open.

#36696 In langchain-ai/langchain;

· nu1lx opened on Apr 13, 2026

core: default_tool_parser crashes on malformed function dicts, silently drops all valid tool calls

external

Status: Open.

#36679 In langchain-ai/langchain;

· Mustafa Shoukat (Mustafa-Shoukat1) opened on Apr 12, 2026

Blob.as_bytes_io() raises NotImplementedError for string data

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

#36667 In langchain-ai/langchain;

· chang923 opened on Apr 11, 2026

Support OpenAI token count API

external

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

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

Status: Open.

Feature

#36661 In langchain-ai/langchain;

· Tharshan Muthulingam (viperfx) opened on Apr 10, 2026

bug(openai): _create_usage_metadata crashes with TypeError when service_tier is set and cached_tokens is missing

external

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

Status: Open.

#36657 In langchain-ai/langchain;

· Yunsu (Hybirdss) opened on Apr 10, 2026

bug(core): _batch and _abatch lack batch_size validation causing infinite loop

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

#36647 In langchain-ai/langchain;

· chang923 opened on Apr 10, 2026

bug(core): same-index tool_call chunks in one streamed delta can split into blank tool_calls and invalid_tool_calls

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

external

Status: Open.

#36627 In langchain-ai/langchain;

· Yuchen Lin (lyc280705) opened on Apr 9, 2026

feat(middleware): TodoListMiddleware should re-inject current todos into system prompt for deep/long-running agent compatibility

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

#36624 In langchain-ai/langchain;

· Chetan Reddy (chetanreddyv) opened on Apr 9, 2026

MongoDB Toolkit fails with Firestore MongoDB-compatible endpoint due to unsupported authorizedCollections option

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

#36609 In langchain-ai/langchain;

· deepa-invisibl opened on Apr 8, 2026