Codex use cases
| Job | What it covers | Team |
|---|---|---|
| Codex for SEO | Daily report, new pages and technical fixes | Marketing |
| Codex code review | Review every pull request against your rules | Engineering |
| Sentry with Codex | New errors filed with impact, cause and a fix | Engineering |
| Codex security review | Check each change and scan the repository | Engineering |
| Codex for GitHub issues | Triage new issues and turn clear ones into pull requests | Engineering |
| Codex QA testing | Playwright tests, browser checks and bug reports | Engineering |
| Codex for data analysis | SQL, CSVs and a weekly metrics digest | Data and marketing |
| Codex for content creation | Blog posts, site copy and social drafts | Marketing |
| Codex refactoring | Small, tested steps through a refactoring backlog | Engineering |
What every job needs
- Rules in AGENTS.md: Codex combines
~/.codex/AGENTS.mdwith the files from the repository root down to the working folder. See the AGENTS.md guide. - Tools over MCP:
codex mcp add, or a[mcp_servers.<name>]table inconfig.toml; a streamable HTTP server needs only itsurl. - Network: the default
workspace-writesandbox has no network access. Jobs whose commands call APIs neednetwork_access = true. - A command that runs without you:
codex exec, with--json,-oor--output-schemafor scripts, andopenai/codex-actionfor GitHub Actions. - A schedule: scheduled tasks in the ChatGPT desktop app or on the web, or
codex execfrom cron. See proactive Codex.
Run these jobs as an AI employee
Crewmark turns your own Codex into an AI employee with a role, a goal in numbers, working hours and a heartbeat. Recurring jobs become recurring issues on its board.
Pick a role
From the AI employee roles.
Add the jobs as issues
Daily and weekly jobs repeat on their own; the employee takes each one when it's due.
Using Claude Code?
The same jobs, set up for Claude Code: Claude Code use cases.
FAQ
What is Codex used for?
Writing and changing code, plus code and security review, error and issue triage, testing, refactoring, data analysis and writing. Anything it can do through files, commands and MCP tools.
Can Codex run tasks on a schedule?
Yes. Scheduled tasks in the ChatGPT desktop app or on the web run on a schedule, in a local project or a worktree; the CLI doesn't manage them. Or run codex exec from cron.
Why can't Codex reach the network?
The default workspace-write sandbox keeps network access off. Set network_access = true under [sandbox_workspace_write] in config.toml for jobs whose commands need it.
Do these jobs work with Claude Code too?
Yes. Every job has a Claude Code version. The rules are the same, in CLAUDE.md instead of AGENTS.md.
Checked against Claude Code's and OpenAI's Codex documentation on November 13, 2026.