Release of a comprehensive cheat sheet for Claude Code aggregating CLI commands, MCP configurations, and workflow shortcuts.

Achieved flagship-level coding performance, surpassing the larger Qwen3.5-397B-A17B model on all major coding benchmarks.

Announced 46:1 context cache ratio for managing 39 projects and integration with FastMCP

Released Playwright MCP Server for generating web tests from natural language prompts

Critical security vulnerabilities (CVE-2026-35022) disclosed, requiring immediate patching and cessation of authentication helper use.

Anthropic releases Claude Code CLI version 0.2.87, which is later found to contain critical vulnerabilities.

Anthropic releases Claude Code version 2.1.87, which is later found to contain critical vulnerabilities.