Found at “[SEVERE] Desktop auto-installs Codex/Claude plugins; installer attempts to trust its own startup hook · Issue #14370 · postmanlabs/postman-app-support” on 2026-11-04T10:14:02+01:00.

Opening Postman on my Mac was followed by unexpected changes to my coding agents: recurring MCP authentication warnings and Codex repeatedly routing API work through Postman skills. Investigation found a user-wide Postman plugin, a startup instruction hook, a remote MCP connection, a Claude Code plugin, and a separately installed Postman CLI.