MCP Servers

OpenClaw v2026.5.12 is a maintenance release focused on dependency externalization, UI improvements, and stability fixes. Key changes include externalizing AWS Bedrock and plugin dependencies to reduce bloat, adding persistent auto-scroll controls in the UI, implementing ACP fallback backends, and fixing numerous issues across Telegram, Slack, authentication, and session management. The release addresses 40+ bug fixes spanning security, performance, and user experience improvements.

OpenClaw v2026.5.12-beta.8 introduces significant improvements to dependency management by externalizing AWS SDK and plugin dependencies, enhances user control with persistent auto-scroll modes in the UI, adds fallback runtime backends for ACP, and fixes numerous issues across Telegram integration, session management, security sandboxing, and media handling. The release focuses on performance optimization, security hardening, and improved reliability across multiple subsystems including CLI, gateway, and agent spawning.

OpenClaw v2026.5.12-beta.5 is a comprehensive bug-fix release addressing gateway protocol improvements, security hardening, plugin dependency management, channel integrations (WhatsApp, Telegram, Discord, WeCom), session transcript redaction, and agent execution reliability. Key fixes include OAuth token exchange for Copilot, device pairing approval requirements, media size enforcement across plugins, and LLM idle watchdog timeout escalation. The release improves stability across multiple integrations while strengthening security controls for trusted proxies, admin scopes, and sensitive data redaction.

langchain-core version 1.4.0 release includes numerous bug fixes, performance improvements, and feature additions across the LangChain core library. Key updates involve hardening security (SSRF protections, deserialization safety), improving streaming with content-block-centric v2 support, enhancing tracer metadata handling, and updating dependencies. The release spans from version 0.3.86 through 1.4.0 with multiple intermediate releases (1.2.x, 1.3.x series) containing incremental improvements to tool handling, token counting, and model integrations.

Claude Code v2.1.139 introduces significant new features including an agent view for managing multiple sessions, a `/goal` command for multi-turn task completion, and enhanced MCP server support with environment variables. The release includes numerous UX improvements like transcript navigation shortcuts, plugin token cost estimation, and fixes for critical issues such as credential deadlocks, memory leaks in MCP servers, and terminal interaction bugs.

OpenClaw v2026.5.10-beta.3 introduces stricter build and TypeScript checks, upgrades to pnpm 11, and adds significant enhancements across Slack, Discord voice, models, and the Plugin SDK. Key improvements include provider-level local service startup, context mapping, Slack link/media preview controls, realtime voice diagnostics, and structured media extraction capabilities. Multiple bug fixes address session management, authentication latency, and cross-platform compatibility.

OpenClaw v2026.5.10-beta.2 introduces significant enhancements across QA automation, voice capabilities, and provider compatibility. Key additions include Telegram live PR evidence automation with Crabbox integration, realtime voice diagnostics for Discord, and improved CLI onboarding. The release includes 30+ dependency updates and numerous bug fixes addressing session management, model compatibility, and gateway stability.

OpenClaw v2026.5.10-beta.1 introduces significant enhancements to QA automation, real-time voice diagnostics, and gateway security. Key additions include Telegram live PR evidence automation with Crabbox integration, Discord voice diagnostics, and private skill archive uploads. The release also includes numerous bug fixes across CLI, agent routing, model compatibility, and chat delivery systems, plus dependency updates for improved performance and security.

Claude Code v2.1.136 is a maintenance release focused on stability and bug fixes across multiple platforms. Key improvements include fixes for MCP server persistence, OAuth token handling, extended thinking compatibility, and numerous UI/UX refinements in the VS Code extension and JetBrains plugin. The release addresses critical issues with file picker matching, dialog rendering, terminal output formatting, and plugin management while enhancing visual consistency and keyboard navigation.

LangChain version 0.3.30 has been released with updates since v0.3.29. The release includes a backport of loads/dumps hardening to v0.3 and deprecation of the hub feature. These changes improve serialization robustness and signal the deprecation of hub functionality in the v0.3 branch.

OpenAI Agents Python v0.16.1 is a maintenance release focusing on stability and reliability improvements. Key fixes address chat completion streaming indexes, MCP policy validation, session history recovery, corrupt state handling, and function tool input validation. The release includes documentation updates covering tool execution concurrency and changelog entries.

This cookbook demonstrates building a multiagent coordinator system using Claude Managed Agents to automate sales-proposal generation. A coordinator agent orchestrates three specialist subagents—a web-search researcher, a case-study librarian, and a rules-based pricing modeler—each with scoped toolsets and specific responsibilities. The pattern shows how to structure heterogeneous teams, use per-role tool scoping, and leverage thread_created/thread_message_received events for agent coordination to assemble tailored sales proposals.

OpenAI Agents Python SDK v0.16.0 introduces significant updates including a default model change from gpt-4.1 to gpt-5.4-mini, new configuration options for disabling max_turns limits, SDK-side tool execution concurrency control, and server-prefixed MCP tool naming to prevent conflicts. The release also includes stability fixes for tool call output indexes and security improvements for symlink handling. These changes enhance performance and provide greater flexibility for agent configuration while maintaining backward compatibility through explicit model specification.

Claude Code v2.1.132 is a maintenance release focused on stability, terminal handling, and user experience improvements. Key fixes address graceful shutdown behavior, emoji/character rendering issues, clipboard operations, IDE terminal compatibility, and MCP server reliability. The release also adds environment variables for session tracking and alternate-screen rendering control, plus improvements to slash command UI and error messaging.

OpenAI Agents Python v0.15.3 is a maintenance release focused on bug fixes and stability improvements. Key fixes address MCP (Model Context Protocol) tool input schema mutations, JSON validation for non-object inputs, deterministic error handling for duplicate tools, and audio delta tolerance during format negotiation. The release includes documentation updates and expanded test coverage for edge cases.

OpenClaw v2026.5.5 is a maintenance release focused on fixing critical bugs across multiple messaging platforms (Feishu, LINE, Telegram, Discord, Matrix, Slack), improving control UI responsiveness and session management, resolving provider integration issues (xAI/Grok, Fireworks), and enhancing diagnostic tools. Key improvements include fixing message routing, webhook validation, tool progress rendering, approval delivery retries, and heartbeat timeout handling. The release also addresses plugin management, media handling, and gateway stability issues.

OpenAI Agents Python v0.15.2 introduces context management model settings and fixes critical issues with conversation session replay, tool execution, and error handling. The release includes 11 bug fixes addressing assistant conversation item IDs, function tool tracing, MCP tool metadata isolation, and stream terminal rejection. Comprehensive test coverage improvements ensure reliability across realtime tool behaviors, handoff mechanisms, and tool identity helpers.

Claude Code v2.1.129 introduces plugin URL fetching, improved output synchronization, and auto-update capabilities for package managers. The release includes refinements to model discovery, history search behavior, and skill overrides, along with numerous bug fixes addressing UI regressions, cache handling, OAuth issues, and policy enforcement. Key improvements enhance terminal compatibility, conversation management, and enterprise security features.

LangChain Core version 0.3.85 was released with a critical security fix that hardens the `load()` function against untrusted manifests. This patch addresses potential vulnerabilities when loading manifests from untrusted sources. The release follows version 0.3.84 and includes security improvements to the core library.

langchain-core version 1.3.3 was released with security hardening, deprecation fixes, and stability improvements. Key changes include protecting the `load()` function against untrusted manifests, preserving structured inputs on tool runs in tracers, and validating batch_size to prevent infinite loops. The release also includes dependency updates and marks stream_v2/astream_v2 as beta features.