Agent IDE — Codex fork for AI-native development environment
bb0ac5be70
## Summary - move regular-turn context diff/full-context persistence into `run_turn` so pre-turn compaction runs before incoming context updates are recorded - after successful pre-turn compaction, rely on a cleared `reference_context_item` to trigger full context reinjection on the follow-up regular turn (manual `/compact` keeps replacement history summary-only and also clears the baseline) - preserve `<model_switch>` when full context is reinjected, and inject it *before* the rest of the full-context items - scope `reference_context_item` and `previous_model` to regular user turns only so standalone tasks (`/compact`, shell, review, undo) cannot suppress future reinjection or `<model_switch>` behavior - make context-diff persistence + `reference_context_item` updates explicit in the regular-turn path, with clearer docs/comments around the invariant - stop persisting local `/compact` `RolloutItem::TurnContext` snapshots (only regular turns persist `TurnContextItem` now) - simplify resume/fork previous-model/reference-baseline hydration by looking up the last surviving turn context from rollout lifecycle events, including rollback and compaction-crossing handling - remove the legacy fallback that guessed from bare `TurnContext` rollouts without lifecycle events - update compaction/remote-compaction/model-visible snapshots and compact test assertions (including remote compaction mock response shape) ## Why We were persisting incoming context items before spawning the regular turn task, which let pre-turn compaction requests accidentally include incoming context diffs without the new user message. Fixing that exposed follow-on baseline issues around `/compact`, resume/fork, and standalone tasks that could cause duplicate context injection or suppress `<model_switch>` instructions. This PR re-centers the invariants around regular turns: - regular turns persist model-visible context diffs/full reinjection and update the `reference_context_item` - standalone tasks do not advance those regular-turn baselines - compaction clears the baseline when replacement history may have stripped the referenced context diffs ## Follow-ups (TODOs left in code) - `TODO(ccunningham)`: fix rollback/backtracking baseline handling more comprehensively - `TODO(ccunningham)`: include pending incoming context items in pre-turn compaction threshold estimation - `TODO(ccunningham)`: inject updated personality spec alongside `<model_switch>` so some model-switch paths can avoid forced full reinjection - `TODO(ccunningham)`: review task turn lifecycle (`TurnStarted`/`TurnComplete`) behavior and emit task-start context diffs for task types that should have them (excluding `/compact`) ## Validation - `just fmt` - CI should cover the updated compaction/resume/model-visible snapshot expectations and rollout-hydration behavior - I did **not** rerun the full local test suite after the latest resume-lookup / rollout-persistence simplifications |
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| .codex/skills/test-tui | ||
| .devcontainer | ||
| .github | ||
| .vscode | ||
| codex-cli | ||
| codex-rs | ||
| docs | ||
| patches | ||
| scripts | ||
| sdk/typescript | ||
| shell-tool-mcp | ||
| third_party | ||
| .bazelignore | ||
| .bazelrc | ||
| .bazelversion | ||
| .codespellignore | ||
| .codespellrc | ||
| .gitignore | ||
| .markdownlint-cli2.yaml | ||
| .npmrc | ||
| .prettierignore | ||
| .prettierrc.toml | ||
| AGENTS.md | ||
| announcement_tip.toml | ||
| BUILD.bazel | ||
| CHANGELOG.md | ||
| cliff.toml | ||
| defs.bzl | ||
| flake.lock | ||
| flake.nix | ||
| justfile | ||
| LICENSE | ||
| MODULE.bazel | ||
| MODULE.bazel.lock | ||
| NOTICE | ||
| package.json | ||
| pnpm-lock.yaml | ||
| pnpm-workspace.yaml | ||
| rbe.bzl | ||
| README.md | ||
| SECURITY.md | ||
npm i -g @openai/codex
or brew install --cask codex
Codex CLI is a coding agent from OpenAI that runs locally on your computer.
If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE.
If you want the desktop app experience, run
codex app or visit the Codex App page.
If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.
Quickstart
Installing and running Codex CLI
Install globally with your preferred package manager:
# Install using npm
npm install -g @openai/codex
# Install using Homebrew
brew install --cask codex
Then simply run codex to get started.
You can also go to the latest GitHub Release and download the appropriate binary for your platform.
Each GitHub Release contains many executables, but in practice, you likely want one of these:
- macOS
- Apple Silicon/arm64:
codex-aarch64-apple-darwin.tar.gz - x86_64 (older Mac hardware):
codex-x86_64-apple-darwin.tar.gz
- Apple Silicon/arm64:
- Linux
- x86_64:
codex-x86_64-unknown-linux-musl.tar.gz - arm64:
codex-aarch64-unknown-linux-musl.tar.gz
- x86_64:
Each archive contains a single entry with the platform baked into the name (e.g., codex-x86_64-unknown-linux-musl), so you likely want to rename it to codex after extracting it.
Using Codex with your ChatGPT plan
Run codex and select Sign in with ChatGPT. We recommend signing into your ChatGPT account to use Codex as part of your Plus, Pro, Team, Edu, or Enterprise plan. Learn more about what's included in your ChatGPT plan.
You can also use Codex with an API key, but this requires additional setup.
Docs
This repository is licensed under the Apache-2.0 License.