1# Create a CLI Codex can use | Codex use cases1# Create a CLI Codex can use | Codex use cases
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3Codex use cases
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9Codex use case
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11# Create a CLI Codex can use
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13Give Codex a composable command for an API, log source, export, or team script.
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15Difficulty **Intermediate**
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17Time horizon **1h**
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19Ask Codex to create a composable CLI it can run from any folder, combine with repo scripts, use to download files, and remember through a companion skill.
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21## Best for
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23- Repeated work where Codex needs to search, read, download from, or safely write to the same service, export, local archive, or repo script.
24- Agent tools that need paged search, exact reads by ID, predictable JSON, downloaded files, local indexes, or draft-before-write commands.
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26# Contents
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3[← All use cases](https://developers.openai.com/codex/use-cases)28[← All use cases](https://developers.openai.com/codex/use-cases)
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5Copy page [Export as PDF](https://developers.openai.com/codex/use-cases/agent-friendly-clis/?export=pdf)30Copy page [Export as PDF](https://developers.openai.com/codex/use-cases/agent-friendly-clis/?export=pdf)
42 Command name: [cli-name, or recommend one].67 Command name: [cli-name, or recommend one].
43Before coding, show me the proposed command surface and ask only for missing details that would block the build.68Before coding, show me the proposed command surface and ask only for missing details that would block the build.
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70[Open in the Codex app](codex://new?prompt=Use+%24cli-creator+to+create+a+CLI+you+can+use%2C+and+use+%24skill-creator+to+create+the+companion+skill+in+this+same+thread.%0A%0ASource+to+learn+from%3A+%5Bdocs+URL%2C+OpenAPI+spec%2C+redacted+curl+command%2C+existing+script+path%2C+log+folder%2C+CSV+or+JSON+export%2C+SQLite+database+path%2C+or+pasted+--help+output%5D.%0A%0AFirst+job+the+CLI+should+support%3A+%5Bdownload+failed+CI+logs+from+a+build+URL%2C+search+support+tickets+and+read+one+by+ID%2C+query+an+admin+API%2C+read+a+local+database%2C+or+run+one+step+from+an+existing+script%5D.%0A%0AOptional+write+job%3A+%5Bcreate+a+draft+comment%2C+upload+media%2C+retry+a+failed+job%2C+or+read-only+for+now%5D.%0A%0ACommand+name%3A+%5Bcli-name%2C+or+recommend+one%5D.%0A%0ABefore+coding%2C+show+me+the+proposed+command+surface+and+ask+only+for+missing+details+that+would+block+the+build. "Open in the Codex app")
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45Use $cli-creator to create a CLI you can use, and use $skill-creator to create the companion skill in this same thread.72Use $cli-creator to create a CLI you can use, and use $skill-creator to create the companion skill in this same thread.
46Source to learn from: [docs URL, OpenAPI spec, redacted curl command, existing script path, log folder, CSV or JSON export, SQLite database path, or pasted --help output].73Source to learn from: [docs URL, OpenAPI spec, redacted curl command, existing script path, log folder, CSV or JSON export, SQLite database path, or pasted --help output].
47First job the CLI should support: [download failed CI logs from a build URL, search support tickets and read one by ID, query an admin API, read a local database, or run one step from an existing script].74First job the CLI should support: [download failed CI logs from a build URL, search support tickets and read one by ID, query an admin API, read a local database, or run one step from an existing script].
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130Use Codex to turn a game brief into first a well-defined plan, and then a real browser-based...157Use Codex to turn a game brief into first a well-defined plan, and then a real browser-based...
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132159Engineering Code](https://developers.openai.com/codex/use-cases/browser-games)[Engineering Code](https://developers.openai.com/codex/use-cases/browser-games)[
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134161### Save workflows as skills### Deploy an app or website
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136163Turn a working Codex thread, review rules, test commands, release checklists, design...Use Codex with Build Web Apps and Vercel to turn a repo, screenshot, design, or rough app...
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138165Engineering Workflow](https://developers.openai.com/codex/use-cases/reusable-codex-skills)[Front-end Integrations](https://developers.openai.com/codex/use-cases/deploy-app-or-website)[
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140167### Upgrade your API integration### Refactor your codebase
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142169Use Codex to update your existing OpenAI API integration to the latest recommended models...Use Codex to remove dead code, untangle large files, collapse duplicated logic, and...
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144171Evaluation Engineering](https://developers.openai.com/codex/use-cases/api-integration-migrations)Engineering Code](https://developers.openai.com/codex/use-cases/refactor-your-codebase)