Codex CLI 0.153.0-alpha.2

• [new] Adds the o1 model identifier so it can be selected alongside existing models.
• [changed] Renames the MCP protobuf-related environment variable from CODEX_MCP_PROTOC to CODEX_MCP_PROTOCC.
• [removed] Drops the CODEX_SANDBOX_NETWORK_DISABLED environment variable.
• [changed] Client message handling now surfaces a full result event instead of a chunked result event.
• [new] Emits exec_command_begin and collab_waiting_end notifications for clearer exec and collaboration lifecycle signaling.
• [changed] Expands response usage metadata (including completed-output token details) on turn completion paths.
• [new] Adds sandbox state arguments for carrying sandbox status in tool/runtime flows.
• [changed] Hook configuration recognizes MCP tool and prompt handler forms more directly.
• [new] Supports clearing a thread goal via dedicated thread-goal clear parameters.
• [changed] Login/account parameter shapes for API key and ChatGPT sign-in are reworked for clearer account initialization.
• [removed] Removes the raw marketplace manifest payload type and related steer/list parameter shapes that are no longer part of the wire model.

Under the hood

• Environment status and GitHub git-ref summary types land in the data model for status and repo-ref reporting.
• Turn-completed notifications and related usage metadata are structured for downstream consumers.
• Trace, handshake, delegate, and filesystem path enums see internal cleanups (renames and variant swaps) aimed at more precise error and runtime signaling.
• Websocket error wrapping and several older client/trace payload variants are trimmed as the event model narrows.
• Version metadata is bumped to 0.153.0-alpha.2 / rust-v0.153.0-alpha.2 on the alpha channel.

Upgrade notes

• If you set CODEX_MCP_PROTOC, switch to CODEX_MCP_PROTOCC.
• Remove any use of CODEX_SANDBOX_NETWORK_DISABLED; it is no longer honored.
• Clients that listened for chunked client-message result events should handle the full client-message result event instead.
• Anything that depended on marketplace manifest payloads or the old thread-list / turn-steer parameter shapes will need to follow the updated protocol types.