Switch Codex CLI rust-v0.157.0 to GPT-6 Sol or Luna
Codex CLI rust-v0.157.0 adds GPT-6 Sol and Luna with Amazon Bedrock and older-model migration prompts, turns on fullscreen transcripts and automatic background-server startup, and addsf fork plus /import in remote and daemon sessions. Upgrade, migrate models, and keep those defaults.Why this loop
rust-v0.157.0 changes both which model you should run and how sessions start. GPT-6 Sol and Luna are in the catalog, including Amazon Bedrock, and older models now show migration prompts—ignore them and you stay on stale entries (gpt-5.6-sol also lost the ultrafast tier). Automatic background-server startup is on for eligible interactive sessions, with an explicit recovery choice when daemon settings are incompatible; that path is what makes /import work in remote and local background-server sessions. The TUI defaults to fullscreen transcripts, Shift-click extends selections, and f forks a conversation locked in another app without dropping drafts or queued prompts. Proxies now apply to realtime WebSockets and standalone web search (including redirects); network restrictions continue across redirects, HTTP, and WebSockets. Unix local MCP servers are limited to stdio, and MCP OAuth authorization endpoints must be HTTP(S). After upgrade, codex doctor names failed SQLite databases. File uploads retry with a five-minute timeout.
Proposed actions
- Upgrade OpenAI Codex CLI to rust-v0.157.0 (https://github.com/openai/codex/releases/tag/rust-v0.157.0), then run
codex doctorand repair any failed SQLite databases it identifies. - In Codex CLI, switch this session to GPT-6 Sol or Luna. If a migration prompt appears for an older model, accept it. If you serve models on Amazon Bedrock, enable Bedrock for GPT-6 Sol and Luna and do not select the removed gpt-5.6-sol ultrafast tier.
- Leave automatic background-server startup enabled for eligible interactive sessions. If Codex reports incompatible background-server settings, take the recovery choice it offers instead of disabling the daemon.
- In the Codex TUI, keep fullscreen transcripts (now default), Shift-click to extend text selections, and press
fto fork a conversation open in another app so drafts and queued prompts are preserved. In remote sessions and local background-server sessions, run/importto load threads that previously required a local interactive session. - Point Unix local MCP servers at stdio descriptors only. Restrict MCP OAuth authorization endpoints to HTTP(S). Confirm configured proxies are used for realtime WebSocket connections and standalone web search, including search redirects.
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Context
Assistant: OpenAI Codex CLI
Proposal: Switch Codex CLI rust-v0.157.0 to GPT-6 Sol or Luna
Summary: Codex CLI rust-v0.157.0 adds GPT-6 Sol and Luna with Amazon Bedrock and older-model migration prompts, turns on fullscreen transcripts and automatic background-server startup, and adds f fork plus /import in remote and daemon sessions. Upgrade, migrate models, and keep those defaults.
Primary source: https://github.com/openai/codex/releases/tag/rust-v0.157.0
Why it matters
rust-v0.157.0 changes both which model you should run and how sessions start. GPT-6 Sol and Luna are in the catalog, including Amazon Bedrock, and older models now show migration prompts—ignore them and you stay on stale entries (gpt-5.6-sol also lost the ultrafast tier). Automatic background-server startup is on for eligible interactive sessions, with an explicit recovery choice when daemon settings are incompatible; that path is what makes /import work in remote and local background-server sessions. The TUI defaults to fullscreen transcripts, Shift-click extends selections, and f forks a conversation locked in another app without dropping drafts or queued prompts. Proxies now apply to realtime WebSockets and standalone web search (including redirects); network restrictions continue across redirects, HTTP, and WebSockets. Unix local MCP servers are limited to stdio, and MCP OAuth authorization endpoints must be HTTP(S). After upgrade, codex doctor names failed SQLite databases. File uploads retry with a five-minute timeout.
Suggested actions
- Upgrade OpenAI Codex CLI to rust-v0.157.0 (https://github.com/openai/codex/releases/tag/rust-v0.157.0), then run
codex doctorand repair any failed SQLite databases it identifies. - In Codex CLI, switch this session to GPT-6 Sol or Luna. If a migration prompt appears for an older model, accept it. If you serve models on Amazon Bedrock, enable Bedrock for GPT-6 Sol and Luna and do not select the removed gpt-5.6-sol ultrafast tier.
- Leave automatic background-server startup enabled for eligible interactive sessions. If Codex reports incompatible background-server settings, take the recovery choice it offers instead of disabling the daemon.
- In the Codex TUI, keep fullscreen transcripts (now default), Shift-click to extend text selections, and press
fto fork a conversation open in another app so drafts and queued prompts are preserved. In remote sessions and local background-server sessions, run/importto load threads that previously required a local interactive session. - Point Unix local MCP servers at stdio descriptors only. Restrict MCP OAuth authorization endpoints to HTTP(S). Confirm configured proxies are used for realtime WebSocket connections and standalone web search, including search redirects.
Config surfaces this release may change
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- MCP servers — check your repo before applying
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Deliverables:
- Short impact assessment
- Optional patch plan (files + steps)
- Do not invent APIs not in the source notes
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