codex

fix: remove behavioral prompting from update_plan tool def (#2261 )

- Moved some of the content to the main prompt.

ae · 2025-08-13 19:05:13 +00:00

30ee24521b

[prompt] Restore important guidance for shell command usage (#2211 )

## Summary
In #1939 we overhauled a lot of our prompt. This was largely good, but
we're seeing some specific points of confusion from the model! This
prompt update attempts to address 3 of them:
- Enforcing the use of `ripgrep`, which is bundled as a dependency when
installed with homebrew. We should do the same on node (in progress)
- Explicit guidance on reading files in chunks.
- Slight adjustment to networking sandbox language. `enabled` /
`restricted` is anecdotally less confusing to the model and requires
less reasoning to escalate for approval.

We are going to continue iterating on shell usage and tools, but this
restores us to best practices for current model snapshots.

## Testing
- [x] evals
- [x] local testing

Dylan · 2025-08-12 10:19:07 -07:00

90d892f4fd

feat: update system prompt (#1939 )

ae · 2025-08-07 04:29:50 -07:00

81b148bda2

[prompt] Update prompt.md (#1839 )

## Summary
Additional clarifications to our prompt. Still very concise, but we'll
continue to add more here.

Dylan · 2025-08-05 00:43:23 -07:00

d31e149cb1

[prompts] Better user_instructions handling (#1836 )

## Summary
Our recent change in #1737 can sometimes lead to the model confusing
AGENTS.md context as part of the message. But a little prompting and
formatting can help fix this!

## Testing
- Ran locally with a few different prompts to verify the model
behaves well.
- Updated unit tests

Dylan · 2025-08-04 18:55:57 -07:00

063083af15

Update prompt.md (#1819 )

The existing prompt is really bad. As a low-hanging fruit, let's correct
the apply_patch instructions - this helps smaller models successfully
apply patches.

easong-openai · 2025-08-04 10:42:39 -07:00

a6139aa003

Initial planning tool (#1753 )

We need to optimize the prompt, but this causes the model to use the new
planning_tool.

<img width="765" height="110" alt="image"
src="https://github.com/user-attachments/assets/45633f7f-3c85-4e60-8b80-902f1b3b508d"
/>

easong-openai · 2025-07-31 20:45:52 +00:00

6ce0a5875b

feat: initial import of Rust implementation of Codex CLI in codex-rs/ (#629 )

As stated in `codex-rs/README.md`:

Today, Codex CLI is written in TypeScript and requires Node.js 22+ to
run it. For a number of users, this runtime requirement inhibits
adoption: they would be better served by a standalone executable. As
maintainers, we want Codex to run efficiently in a wide range of
environments with minimal overhead. We also want to take advantage of
operating system-specific APIs to provide better sandboxing, where
possible.

To that end, we are moving forward with a Rust implementation of Codex
CLI contained in this folder, which has the following benefits:

- The CLI compiles to small, standalone, platform-specific binaries.
- Can make direct, native calls to
[seccomp](https://man7.org/linux/man-pages/man2/seccomp.2.html) and
[landlock](https://man7.org/linux/man-pages/man7/landlock.7.html) in
order to support sandboxing on Linux.
- No runtime garbage collection, resulting in lower memory consumption
and better, more predictable performance.

Currently, the Rust implementation is materially behind the TypeScript
implementation in functionality, so continue to use the TypeScript
implmentation for the time being. We will publish native executables via
GitHub Releases as soon as we feel the Rust version is usable.

Michael Bolin · 2025-04-24 13:31:40 -07:00

31d0d7a305

8 Commits