MCP Servers

LangChain Core version 0.3.84 has been released with improvements to prompt sanitization. This patch release follows version 0.3.83 and includes a fix that enhances how prompts are processed and cleaned within the core library. The changes focus on improving data handling and security in prompt processing.

LangChain Core version 1.2.28 has been released with improvements to template sanitization. This patch release follows version 1.2.27 and includes a fix that adds enhanced sanitization logic to templates, improving security and robustness. The release is part of the ongoing LangChain framework maintenance and development cycle.

Claude Code v2.1.94 introduces Amazon Bedrock support via Mantle, increases default effort levels for API users, and adds enhanced Slack integration with compact channel headers. The release includes significant bug fixes for rate-limiting handling, macOS login issues, plugin skill invocation naming, and terminal rendering problems across multiple platforms including VSCode.

langchain-core version 1.2.27 was released with a critical fix for handling symlinks in deprecated prompt save paths. The release includes a minor chore update adding clarification comments about the pygments dependency requirement. This patch addresses a reported issue that could affect users relying on legacy prompt saving functionality.

langchain-ollama version 1.1.0 introduces several new features and improvements including support for response_format, logprobs, and embedding dimensions, along with critical bug fixes for message serialization and base_url handling. The release includes dependency updates for security (CVE-2026-4539), improved error handling, and code quality enhancements across the Ollama integration package.

OpenAI Agents Python v0.13.5 introduces callable approval policies for local MCP servers, adds a public flush_traces API for trace management, and fixes critical issues with AnyLLM reasoning extraction and SQLite session serialization. This release improves agent security, observability, and data consistency while maintaining backward compatibility.

Claude Code v2.1.92 introduces enhanced security policies with remote settings refresh, an interactive Bedrock setup wizard for AWS integration, improved cost transparency with per-model breakdowns, and numerous bug fixes. Key improvements include better session naming with hostname prefixes, fixed subagent spawning issues, enhanced prompt cache feedback for Pro users, and performance optimizations for the Write tool. The release also streamlines the CLI by removing `/tag` and `/vim` commands while improving terminal compatibility and sandbox security.

LangChain Core v1.2.26 release includes fixes for Bedrock model initialization and serialization, adds ChatBaseten to the serializable mapping, removes deprecated gpt-3.5-turbo references from documentation, and corrects parameter names in filter_messages docstring examples. This patch release focuses on improving model compatibility, serialization support, and documentation accuracy.

LangChain v1.2.15 is a minor release that includes a dependency update bumping aiohttp from version 3.13.3 to 3.13.4 in the langchain_v1 library. This patch addresses potential improvements or security fixes in the aiohttp HTTP client library. The release represents incremental maintenance work on the LangChain framework.

Claude Code v2.1.91 introduces MCP tool result persistence overrides supporting up to 500K characters, adds shell execution disabling options, enables multi-line prompts in deep links, and allows plugins to ship executables. The release includes critical fixes for transcript chain breaks, terminal key handling, plan mode persistence in remote sessions, and JSON schema validation, plus performance improvements and enhanced API guidance.

OpenClaw v2026.4.2 is a major release featuring significant architectural improvements including restoration of the core Task Flow substrate with managed sync modes, migration of plugin configurations (xAI and Firecrawl) from legacy core paths to plugin-owned paths, and numerous provider/channel fixes. Key additions include Android assistant integration, enhanced Matrix mentions, Feishu comment workflows, and centralized provider transport policy handling. The release includes breaking changes requiring config migration via `openclaw doctor --fix`.