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LangChain releases v1.3.12 with interrupt propagation and shell middleware fix

LangChain released version 1.3.12, fixing interrupt propagation through ToolRetryMiddleware and avoiding shared process-group kill in shell middleware. The companion langchain-openai v1.3.4 suppresses Pydantic serializer warnings on structured output parsed fields.

4 engagement·2 sources·Wed, Jul 8, 2026, 10:38 PM
On July 8, 2026, LangChain published two patch releases. LangChain v1.3.12 (from v1.3.11) includes fixes for interrupt propagation in ToolRetryMiddleware, shared process-group kill in shell middleware, and sanitization of Anthropic cache markers on fallback retries. LangChain-OpenAI v1.3.4 (from v1.3.3) suppresses Pydantic serializer warnings on structured output parsed fields and includes dependency bumps. These releases improve reliability for agent middleware and structured output handling.

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ToolRetryMiddleware(concept)langchain-openai(tool)LangChain(company)langchain(tool)Pydantic(tool)

Related

Tool ReleaseFri, Jul 10, 2026, 06:58 PM

LangChain releases v1.3.13 and langchain-openai v1.3.5 with explicit prompt caching

LangChain released versions 1.3.13 and langchain-openai 1.3.5, adding explicit prompt caching support for OpenAI models. This allows developers to mark reusable prompt prefixes for reduced latency and cost. The update also includes a new 'meta' extra for langchain-meta integration and refreshed model profiles.

0 engagement·2 sources·github
Tool ReleaseSun, Jul 5, 2026, 09:30 PM

LangChain-Mistralai v1.1.6 adds citation metadata support

LangChain released version 1.1.6 of its langchain-mistralai integration, adding support for surfacing citation metadata from Mistral AI chat responses. The update also includes refreshed model profiles and dependency bumps for vcrpy and langsmith.

0 engagement·1 source·github
Tool ReleaseThu, Jul 9, 2026, 05:56 PM

LangChain Fireworks partner package v1.4.4 released with cached prompt token reporting

LangChain released version 1.4.4 of the langchain-fireworks partner package on July 9, 2026. The update adds reporting of cached prompt token usage and includes dependency bumps and documentation clarifications.

0 engagement·1 source·github
Tool ReleaseSun, Jul 5, 2026, 08:53 PM

LangChain-OpenRouter releases v0.2.6 with custom HTTP header support

LangChain-OpenRouter v0.2.6 is released on 2026-07-05, adding support for `default_headers` for custom HTTP header injection and refreshing model profile data. The update is a minor version bump from 0.2.5.

0 engagement·1 source·github
ProductSat, Jul 11, 2026, 08:57 AM

whatbroke: CLI that captures context on test/dev server crashes for LLM debugging

whatbroke is a free open-source CLI that wraps any command (e.g., npm test) and, on a crash, captures a bundle of context: the error with parsed stack trace, the diff since the last passing run (recorded as a 'green' commit), and a ranked guess at the responsible file with reasons. This context is designed to be fed to an LLM (like Cursor) to enable accurate debugging, solving the problem of LLMs editing the wrong file when given only a stack trace.

2 engagement·1 source·reddit