openai/codex
View on GitHub ↗ ★ 132,828 Rust
Lightweight coding agent that runs in your terminal
220 mentions on Hacker News by 164 people: 64 stories, 156 comments · first 2025-04-16 · latest 2026-10-27
20082026
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…rules works at OpenAI, which, incidentally, is how at least parts of OpenAI builds rust and wasm: https://github.com/openai/codex/blob/main/MODULE.bazel . I have a pretty complex rust backend in my project. I rent a capable bare-metal…
comment by pcj-github · 2026-10-27 · in One year of Dioxus fullstack in production: the good, the painful -
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Codex Desktop continuously generates Crashpad pending dumpsstory by AIorNot · 2026-10-17 · 89 comments
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…bug that ate up 330GB of my Mac's disk space? come one please triage your github issues? See this: https://github.com/openai/codex/issues/25921#issuecomment-62...
comment by AIorNot · 2026-10-17 · in Codex Desktop continuously generates Crashpad pending dumps -
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Codex: Unexplained cleanup `blocked by policy` despite effective Full Accessstory by user2387463 · 2026-10-16 · 0 comments
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…Rust. There are lot of other amazing open source agent harnesses like OpenCode [2] and Pi [3]. [1] https://github.com/openai/codex [2] https://github.com/anomalyco/opencode [3] https://github.com/earendil-works/pi
comment by armcat · 2026-10-16 · in Ask HN: Has anyone decompiled Claude Code yet? -
As an almost-on-topic aside: completely unrelated to this comment, I just stumbled upon this delight: https://github.com/openai/codex/issues/53743 If you thought that your agents in your swarm would need to find some external bulletin…
comment by amluto · 2026-10-13 · in Redesigning source control at Anthropic -
…they broke the most essential thing you can do in TUI - copying the text selected with the mouse: https://github.com/openai/codex/issues/48125
comment by srigi · 2026-10-13 · in Codex CLI installs a persistent, self-updating background daemon by default -
> It’s a shame I cannot inspect the tool. It’s a shame I cannot modify it as I see fit. https://github.com/openai/codex https://github.com/MoonshotAI/kimi-code https://github.com/mistralai/mistral-vibe https://github.com/earendil-works/pi…
comment by schleck8 · 2026-10-12 · in AI is a tool and using it well takes skill -
…model's context window". Somehow, both auto-compaction and manually running /compact don't work. https://github.com/openai/codex/issues/52567#issuecomment-61... - Goals get blocked due to bwrap randomly failing with `bwrap: loopback:…
comment by dllu · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default -
…it to execute on any goal since it would often get blocked every few hours due to random bugs. https://github.com/openai/codex/issues/52251#issuecomment-60...
comment by dllu · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default -
…daemon_auto_start codex app-server daemon stop pkill -f 'app-server daemon pid-update-loop' [1] - https://github.com/openai/codex/issues/48195
comment by vunderba · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default -
…then the background daemon will crash on startup, if the feature flag ever goes away. -- 1: https://github.com/openai/codex/blob/0c329ad2c9d5a2592128a1d...
comment by whimblepop · 2026-10-12 · in Codex CLI installs a persistent, self-updating background daemon by default -
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Codex CLI installs a persistent, self-updating background daemon by defaultstory by whimblepop · 2026-10-12 · 294 comments
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…With that- I was running into essentially what is described here https://github.com/openai/codex/issues/47383
comment by agentdev001 · 2026-10-10 · in Mxc: Microsoft Execution Containers version 1.0.0 -
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Codex Instant Interruptsstory by armcat · 2026-10-08 · 0 comments
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…how they do it. Here is what the model is instructed to do in codex (look at "guidance_message"): https://github.com/openai/codex/blob/d91294c39edb93d204926b3...
comment by nsingh2 · 2026-10-01 · in Context Language Models -
…[1] https://chrlschn.dev/blog/2026/03/mcp-is-dead-long-live-mcp/ [2] https://github.com/openai/codex/issues/5059
comment by CharlieDigital · 2026-09-30 · in You said no MCP -
…to an older version because of the annoying excessive terminal screen flashing issue ( https://github.com/openai/codex/issues/48074 ) (I see a newer version was posted an hour ago. Let's see if the issue is now fixed...)
comment by coverband · 2026-09-30 · in DevDay 2026 Recap -
…To see what can go wrong with this, consider a recent fix to the Codex sandbox on macOS: https://github.com/openai/codex/pull/46500 The sandbox forbids writing to a file descriptor except, oops, someone at Apple forgot about the…
comment by mike_hearn · 2026-09-24 · in 'We hacked the FBI:' Hackers say they have data on all FBI employees -
Seems agents understand their own bugs now. https://github.com/openai/codex/issues/9252 has 88 thumbs up and a workaround (switch to raw mode with Alt+R) found in a comment. Codex suggested the workaround to me today when I complained…
comment by reedlaw · 2026-09-18 · in Claude Code now reads AGENTS.md if there is no Claude.md -
…this specific benchmark would be impacted by this more than the smaller contrived benchmarks. [1]: https://github.com/openai/codex/issues/37524
comment by beefsack · 2026-09-13 · in Real-SWE: Benchmarking AI models on private, real-world, enterprise codebases -
…auto-recharge of credits as well causing people to rack up thousands of dollars unintentionally. https://github.com/openai/codex/issues/31987
comment by nharziro · 2026-09-10 · in Tell HN: OpenAI keeps re-enabling the 'allow training' setting -
…that Codex threw (a 404 of all things) briefly became a live chat for bored and annoyed AI users. https://github.com/openai/codex/issues/28756
comment by aftbit · 2026-09-03 · in Grok outage -
https://github.com/openai/codex/issues/42534
comment by HiPHInch · 2026-09-03 · in ChatGPT outage – Resolved -
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Codex outagestory by armcat · 2026-09-03 · 1 comment
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Data Exfil: OpenAI polices private chats exfiltrated through Codex Memoriesstory by tmpnode · 2026-08-30 · 1 comment
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Can a harness have a true deterministic scheduler and task orchestrator?story by hmokiguess · 2026-08-28 · 1 comment
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Codex uses Ratatui also since June last year. You might be interested to read https://github.com/openai/codex/issues/8344 There's a lot of things you can do to get to 90-95% fidelity with a normal scollable terminal, but that last 5-10% is…
comment by joshka · 2026-08-23 · in Stop Making TUIs -
…a gap between native and the terminal emulator that you're building to run in the terminal. See https://github.com/openai/codex/issues/8344 and https://github.com/openai/codex/pull/9640 Claude code and gemini have both had various versions…
comment by joshka · 2026-08-22 · in Stop Making TUIs -
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OpenAI Codex adds hidden "Daybreak Blue" and "Daybreak Red" cybersecurity modelsstory by bakigul · 2026-08-21 · 1 comment
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…+ Ultra, which is terrible for debugging for obvious reasons. This GitHub issue exists for this: https://github.com/openai/codex/issues/28058 Fine, the opening issue isn't concise exactly, but it's mostly clear what's going on. After a few…
comment by embedding-shape · 2026-08-21 · in Codex on AWS bedrock bug causing 10x charges -
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Codex on AWS bedrock bug causing 10x chargesstory by TheP1000 · 2026-08-21 · 66 comments
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Since when? https://learn.chatgpt.com/docs/codex/cli https://github.com/openai/codex Looks like it's still a more-or-less-open-source product called Codex CLI. FWIW, there have been issues with various versions of ChatGPT not knowing what…
comment by amluto · 2026-08-20 · in Asana cleared 5 years of engineering work in 2 weeks with Codex -
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CodeX v0.148.0 cannot use GPT-5.6 Solstory by linzhangrun · 2026-08-19 · 1 comment
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Codex adds experimental thread/revert supportstory by bakigul · 2026-08-13 · 1 comment
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…to it, it did all of this during the installation. Here is one related GitHub issue I found for it https://github.com/openai/codex/issues/12343 Looks like they don't intend to change this.
comment by debazel · 2026-08-13 · in Codex in ChatGPT desktop app for Linux is now in preview -
Minor factual correction: The Codex client is open source. https://github.com/openai/codex
comment by ameliaquining · 2026-08-11 · in What I learned by putting GitHub Copilot behind a MitM proxy -
…need to make your own copy of the bundled model catalog [2] and opt Luna into MultiAgent V2. 1. https://github.com/openai/codex/issues/32031 2. https://github.com/openai/codex/issues/32031#issuecomment-51...
comment by pbowyer · 2026-07-30 · in Advancing the price-performance frontier with GPT‑5.6 -
…syspolicyd file descriptors and causing unrelated notarized apps to be reported as “damaged”: https://github.com/openai/codex/issues/25882 https://github.com/openai/codex/issues/28071 Quitting Codex and restarting syspolicyd is only a…
comment by williamjinq · 2026-07-29 · in Codex app for macOS repeatedly triggers syspolicyd/trustd CPU and memory runaway -
With some badly written apps like Codex though, this may be a concern [1]. [1] https://github.com/openai/codex/issues/28224
comment by yellow_lead · 2026-07-25 · in Ask HN: Is there a website that tracks excessive writes to SSDs in OS/app betas? -
…aren't even allowed to see what the subagents are doing. To work like this seems impossible to me. https://github.com/openai/codex/issues/28058 https://news.ycombinator.com/item?id=48905028 The big American models have become the most…
comment by jauntywundrkind · 2026-07-20 · in China’s open-weights AI strategy is winning -
> a huge value is the […] Codex harness. There are open source implementations Like Codex https://github.com/openai/codex
comment by kgwgk · 2026-07-20 · in Kimi K3, Qwen 3.8, and Anthropic's (Potential) Unravelling -
A Github issue with actual data instead of just someone reposting info: https://github.com/openai/codex/issues/28224 Previously discussed: https://news.ycombinator.com/item?id=48626930
comment by mirashii · 2026-07-20 · in Codex is wearing out our devices -
A Github issue with actual data instead of just someone reposting info: https://github.com/openai/codex/issues/28224 Previously discussed: https://news.ycombinator.com/item?id=48626930
comment by mirashii · 2026-07-20 · in Codex is wearing out our devices -
A related GitHub issue: https://github.com/openai/codex/issues/25719
comment by arto · 2026-07-20 · in Codex is wearing out our devices -
…do we need Bun for? Why doesn't everybody just port all of their Javascript code into Rust? [0] https://github.com/openai/codex/discussions/1174
comment by abc42 · 2026-07-19 · in Claude Code uses Bun written in Rust now