Claude Code 2.1.259

Everything Fervor AI has published that touches Claude Code 2.1.259 — 2 pieces, newest first.

• Claude Code 2.1.259 Changed What Your MCP Allowlist Covers, and the Docs Still Say Otherwise

  Claude Code 2.1.259 narrowed allowedMcpServers to servers users add, so a managed-mcp.json server your allowlist used to filter out now loads on upgrade, while the…

• Briefing · September 3, 2026 · morning

  The unit that now carries agent capability between machines is an installable Agent Skill fronted by an instruction file, and every governance control that shipped this…