Timeline
Open-source plugin 'dont-let-me' released for Claude Code, Codex, and OpenCode
Claude Code now ships with Plan mode as a first-class safety rail for cross-file refactors
Claude Code skills feature introduced, allowing reusable instruction packs in ~/.claude/skills/
Plan mode and CLAUDE.md/skills introduced for Claude Code
Claude Code's Plan mode introduced as a safety rail for cross-
Claude Code adds iOS Simulator support for building and testing iOS apps from the terminal
Released DeepAgents, an open-source framework for hierarchical AI agent systems
Ecosystem
Claude Code
LangChain
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Benchmarks
Evidence (4 articles)
Profound Launches $40K Marketing Engineering Hackathon in NYC
May 12, 2026GitAgent Launches as Standardized Runtime for AI Agent Frameworks, Aims to Unify LangChain, AutoGen, and Claude Code
Mar 22, 2026LangChain Open-Sources Deep Agents: MIT-Licensed Framework Replicating Claude Code's Core Workflow
Mar 15, 2026Build a Cross-Retailer Price-Comparison Agent with BuyWhere MCP in 30 Lines
Jun 13, 2026