In May 2026, Claude Code's Hooks system received a significant upgrade. PostToolUse hooks can now intercept and replace output from any tool (not just MCP), hooks can read the current effort level via effort.level or $CLAUDE_EFFORT, and duration_ms tracks actual tool execution time. A new claude ultrareview subcommand also enables non-interactive code review from CI pipelines.
In the first week of May 2026, the AI ecosystem is moving on three fronts. Google I/O 2026 opens May 19 with Gemini 4.0 and agentic AI on the agenda. Claude Code has quietly shipped v2.1.132 with better session management and MCP visibility. And NotebookLM has opened a new knowledge-management layer by integrating with the Gemini app as "Notebooks in Gemini."
In May 2026, Anthropic shipped Claude Code with Opus 4.7 as the default model, plus /ultrareview for parallel multi-agent code review and Routines for event-driven cloud agents. AI coding tools are crossing a threshold β from assistants to autonomous teammates.
On May 6, 2026, Claude Code v2.1.129 shipped with three standout features: install plugins from a URL with --plugin-url, build personal color palettes via /theme, and wipe project state cleanly with claude project purge. Anthropic also opened its official plugin directory. Claude Code is no longer just a tool β it is becoming a platform.
Claude Code Routines, launched in April 2026 as a research preview, runs AI agents on Anthropic cloud infrastructure using three triggers: scheduled, API, and GitHub events. Available on Pro plans ($20/month) and above β the agent keeps working even when your laptop is closed. A practical setup guide and real-world education and business scenarios.