Agent Tooling
The best May 28 updates were about running agents more safely and debugging them with less guesswork.
Codex CLI 0.135.0 is an operator release, not a shiny one
OpenAI's May 28 Codex CLI release is the sort of update that matters more after the third unattended run than in a product demo. The key improvement is better observability: `codex doctor` now exposes richer environment, Git, terminal, app-server, and thread diagnostics, which is exactly the information you need when a scheduled run fails on a machine that 'should have worked.' The same release also tightened remote `/status` visibility and made permission profiles more legible, which points in the same direction: Codex is getting better at being operated as a system, not just chatted with as a tool.
Vercel added an AI Gateway allowlist that even coding agents cannot sidestep
Vercel's new team-wide provider allowlist is a meaningful governance feature for anyone routing multiple models through one gateway. The important detail is where enforcement lives: the restriction happens at the gateway level, not the request level, so a developer or agent cannot quietly route traffic to an unapproved provider just by changing a prompt or request option. That makes AI Gateway much more usable for client work where model choice is a security, legal, or procurement decision rather than a purely technical preference.