CODEX 0.119–0.120: REALTIME V2 PROGRESS STREAMING, STRONGER MCP, AND STURDIER REMOTE/SANDBOX RUNS
OpenAI Codex shipped 0.119 and 0.120, adding Realtime V2 progress streaming and major stability fixes for remote and sandboxed workflows. The releases bring ag...
OpenAI Codex shipped 0.119 and 0.120, adding Realtime V2 progress streaming and major stability fixes for remote and sandboxed workflows.
The releases bring agent quality-of-life upgrades: Realtime V2 can now stream background progress and queue follow-ups, while voice sessions default to the v2 WebRTC path for cleaner transport. Remote/app-server workflows gained egress WebSocket support, runtime remote control, sandbox-aware filesystem APIs, and an experimental exec-server. The TUI picked up nicer copy/resume/notification behavior and clearer hook visibility (0.119.0, 0.120.0).
Under the hood, Windows elevated sandbox splits, symlinked carveouts, and TLS websocket panics were fixed. Rate-limit handling in the TUI now fetches limits asynchronously and refreshes stale quotas, which lines up with questions after the April 9 limit changes Understanding the New Codex Limit System After the April 9 Update.
Realtime progress streaming and queued responses reduce perceived latency and make long-running agent work observable.
Remote and sandbox fixes unstick CI/SSH workflows and reduce flaky permission errors across Windows and symlink-heavy repos.
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terminal
Run a remote/app-server session over egress WebSocket, try --cd forwarding, exercise the experimental exec-server, and validate sandbox carveouts with symlinks.
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terminal
Start a long Realtime V2 session and confirm streamed progress, queued follow-ups, and accurate TUI rate-limit updates post–April 9.
Legacy codebase integration strategies...
- 01.
Upgrade pinned environments to ≥0.120 and re-run Windows/symlink carveout scenarios; check for any behavior shifts in tool search result ordering.
- 02.
Audit remote TLS websocket flows to confirm the Rustls provider fix eliminates prior panics.
Fresh architecture paradigms...
- 01.
Adopt MCP tools with typed outputSchema to enforce structured results in code-mode workflows.
- 02.
Expose Realtime V2 progress telemetry in your UI so operators can see agent work while it runs.