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Public story · 2026-03-14 · source-backed
LangGraph 1.1 ships opt-in version="v2" streaming that yields strongly-typed StreamPart dicts with type, namespace, data, and interrupts — eliminating the untyped dict problem that plagued production observability. Pydantic model coercion is automatic. Time-travel with interrupts and subgraphs is fixed. Backward-compatible opt-in; gradual migration via dict-style access on GraphOutput.
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The v2 streaming format brings full type safety to all stream/invoke methods — strongly-typed StreamPart dicts with Pydantic model coercion. v1 remains default so nothing breaks. The langgraph-cli 0.4.14 patch simultaneously resolves three CVEs. LangGraph GitHub
3,364 stars since its August 17 creation. Every action against a computer, file, MCP server or UI component routes through a single gateway that resolves the target, decides it against policy, writes an audit row, then acts or refuses while naming the rule. Each bot gets its o...
FastMCP v4.0.1 (September 2) makes ClientGroup reference-count its context like Client does, so entering a connected group from a nested block reuses connections instead of raising (release). LangChain's 1.4.0a4, cut hours later, contains commits adding _ReentrantClientGroup,...
MIT-licensed, built on LangChain and LangGraph, v2.0 expanding from research-only to sandboxed filesystem, persistent memory, a skills system, and sub-agent orchestration with Slack/Telegram/Feishu integrations (GitHub). The pattern across every framework today is identical: m...
Pydantic's validate_call stores the caller's f_locals on the wrapper it builds, and Agno's Function caches those wrappers for the process lifetime, so on 3.13 each cached tool kept the Agent, session and run state alive indefinitely. Release notes here. The same release adds P...
LangChain, LangGraph, CrewAI, AutoGen, Microsoft Agent Framework, and Google ADK, presented at Black Hat (The Register). Insecure deserialization, SSRF, path traversal, use-after-free. That's the point: prompt-controlled content crosses into trusted framework logic, and then i...
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