Tools #Coding agents#OpenAI Oct 16, 2026 · Originally published Oct 15

Codex CLI 0.163.0 lets you steer mid-response, runs read-only tools in parallel and checks network permission before DNS lookups

This release is mostly interaction polish and sandbox details, with the network proxy fixes bearing directly on security.

Primary source OpenAI Codex GitHub release · github.com Read the original ↗

// Key points

  • You can send a follow-up mid-response to redirect Codex right away; interrupting also stops active Code Mode cells.
  • Independent read-only tools such as skill, memory and history lookups can run in parallel; /config is searchable and flags settings that need a restart.
  • The network proxy checks permissions before DNS lookups, rejects duplicate Host headers and closes a credential-alias bypass; resuming a saved thread restores its permissions and network approvals.
  • Daybreak is on by default for eligible accounts.

Builder's takeIf you run Codex in CI, upgrade for the three network proxy fixes rather than the features: a DNS lookup can leak information on its own, and a credential-alias bypass is worse. Also, resuming a thread now brings back its network approvals, so after upgrading check which domains old threads had approved.

// Background · from #Coding agents

Full timeline →
  1. Oct 16 Copilot will retire Claude Opus 4.8, Claude Opus 5 and GPT-5.6 Terra on November 16
  2. Oct 16 Code scanning alerts can be assigned to Copilot, which reruns CodeQL to verify and opens a draft PR, up to 25 alerts at a time
  3. Oct 15 Claude Code 2.1.299 compacts 200K+ token conversations after about 54 idle minutes, before the one-hour prompt cache expires