What’s new in Codex 0.139.0

Official releaseReleased Jun 9, 2026Original notes on GitHub

New features

Code mode can now call standalone web search directly, including from nested JavaScript tool calls, and receive plaintext search results. (#26719)
Tool and connector input schemas now preserve oneOf and allOf, and large schemas keep more shallow structure when compacted, improving compatibility with richer MCP tools. (#24118, #27084)
codex doctor now includes editor and pager environment details in the local report while redacting raw values in JSON output. (#27081)
Plugin marketplace automation is more informative and responsive: codex plugin marketplace list --json now includes each marketplace source, and plugin lists can return from the cached remote catalog before refreshing in the background. (#27009, #26932)

codex resume --last "..." and codex fork --last "..." now treat the trailing argument as the initial prompt instead of misreading it as a session ID. (#26818)
MCP startup warnings from subagents now stay in the thread that owns them, avoiding duplicate parent-thread alerts and stuck startup spinners in the TUI. (#26639)
Image edits now use the exact referenced image file paths instead of guessing from conversation history, so attached-image edits land on the intended input. (#26486)
Bare URLs with ~ in the path are now linkified end to end in the TUI instead of being truncated before the tilde. (#27088)
Thread resets such as /new, /clear, and /fork no longer drop cloud-managed requirements or feature flags during TUI config reloads. (#25177)
Sandbox execution now preserves approved escalation decisions and enforces configured proxy-only networking more consistently. (#24981, #27035)

Release builds once again publish separate symbol archives with line tables, improving post-release crash symbolication without bringing back the earlier full-debug build slowdown. (#26202)
The embedded V8 toolchain was updated to rusty_v8 149.2.0. (#26464)