Codex / Use Codex
Codex web version
The web version is suitable for submitting remote tasks, viewing the progress of long tasks and managing multiple sessions.

Codex Web Purpose
Codex Web is suitable for submitting remote tasks, viewing run progress, reviewing results and managing cloud executions. It is suitable for repository tasks that do not require local login status.
If the task relies on your native browser, localhost, private GUI, or system permissions, fall back to the local CLI/App/Chrome workflow.
Review remote results
After the remote task is completed, view the file diff, command output, test evidence and security boundaries. Don’t skip code reviews just because the task is done in the cloud.
Complete usage points
Supplement the core concepts, operation sequences, permission boundaries and verification requirements that are easily compressed and missed in official documents, making it easier for English readers to learn completely by page.
Web portal suitable for remote tasks
Codex Web is suitable for processing repository tasks that do not require local state in the cloud, such as generating candidate fixes from issues, reviewing PRs, running remote verification, or managing long tasks. It's not suitable for processes that rely on your native Chrome login state, localhost services, or private GUIs.
When using the Web, you should pay attention to three types of differences: whether the cloud environment and the local environment are consistent, whether the repository configuration contains necessary rules, and whether the verification command can run in the cloud. After completion, you still need to look at the diff, test evidence and risk statement before deciding whether to merge.
If the task fails, first determine whether it is a code problem, lack of environmental dependencies, insufficient permissions, or network restrictions. Don’t let Codex blindly modify code to mask environmental issues.
Study Checklist
Put the content on this page into real tasks and use the five dimensions of entry, context, permissions, verification and team rules to check whether you have truly mastered it.
Study Checklist
After reading this page, do not just remember the concept name. You should be able to place "Codex web version" back into a real Codex engineering workflow: where the task starts, what context the system loads, which actions need approval, how the result is verified, and how to roll back when it fails.
If this is a portal or platform page, specifically confirm what contexts this portal can access: local files, cloud repositories, browser logins, team messages, external tools, and whether these contexts are sufficient to complete the verification.
- Be able to describe in your own words the specific problem this page solves, rather than just reciting the title.
- Able to write a minimal example task with goals, scope, prohibitions, and acceptance criteria.
- Be able to determine which information should be put into the current prompt and which should be captured as project rules or configurations.
- Be able to explain which long-term rules should go into AGENTS.md, and which runtime behavior should be handled by config.toml, permission profile, skills and MCP.
- Ability to check diffs, command output, test results, screenshots or PR notes after a task is completed instead of just trusting the natural language summary.
If this page is used for team training, ask learners to complete a small task with Codex: read and explain first, submit a plan, make the smallest useful change, and close with real verification commands plus human diff review.
Codex practical notes
Fill in the most overlooked execution details of Codex usage around local environments, privilege escalation, remote entry, automation failures, and rollbacks.
Codex Practical Notes
This page is the entrance to Codex. When landing, confirm whether the task is executed locally, in the cloud, or in a collaboration tool, and check whether the entrance can access the real repository, dependencies, network, browser status, and verification commands.
When handling tasks related to "Codex web version", always confirm the current Git status and working directory first. Codex can make changes quickly, but it does not automatically know which uncommitted edits came from the user, which files are off limits, or which commands may affect production.
- Prioritize using low-risk branches or working trees for local tasks, and review them with git diff after completion.
- When it comes to installation dependencies, networking, databases, deployment, push, deletion, and reset, Codex must first be asked to explain the impact before approval.
- Results generated by remote or collaborative portals must also be confirmed back to PR, CI, build logs and test evidence.
- Automated tasks must define failure output and exit conditions in advance to avoid Codex repeatedly trying in the wrong direction.
Think of Codex as an engineering teammate who can execute commands, rather than an assistant who can only write text. The closer you get to a real system, the greater the need for clear boundaries, evidence, and rollbacks.