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How to use Codexless: what you can do with it

What is Codexless? Codexless is an independent preview that lets ChatGPT use a reviewed set of local tools backed by your existing Codex environment, and call the Codex model only when a task needs it.

How do I use it? Clone or download the Codexless source tree for the release you want, then run .\bin\codexless-install.cmd on Windows or sh ./bin/codexless-install.sh on Apple Silicon macOS; then check your project with & "$env:LOCALAPPDATA\Codexless\bin\codexless-doctor.cmd" --cwd "C:\path\to\your\project" on Windows, or "$HOME/Library/Application Support/Codexless/app/bin/codexless-doctor.sh" --cwd "/path/to/your/project" on macOS. Full steps below.

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What do you want to do?

4 use cases

  • Let ChatGPT inspect and edit a local project

    Run Codexless on your machine so ChatGPT can read, edit, and test files in a project you choose.

    View prompt
    Using the Codexless repository at https://github.com/liyana31811/Codexless, install it on this machine, run the doctor check against <project-path>, and report which local project tools ChatGPT can now call. Verify that the doctor check passes before reporting success.

  • Let ChatGPT work in your signed-in Chrome or Edge

    Have ChatGPT read pages, click, type, and download in the browser profile you select.

    View prompt
    Using the Codexless repository at https://github.com/liyana31811/Codexless, ask ChatGPT to open <site-url> in the connected browser profile, complete <task>, and report the final page state. Verify the result by reading the page or a viewport screenshot before reporting completion.

  • Read and update a connected Excel workbook from Chat

    Let ChatGPT search, read, write, and format ranges in a workbook that is already connected.

    View prompt
    Using the Codexless repository at https://github.com/liyana31811/Codexless, ask ChatGPT to check the connected workbook with excel_status, then update <sheet-and-range> with <new-values>. Verify the change by reading back the same range with excel_read_ranges before reporting success.

  • Hand a heavy coding task to Codex after approval

    Approve a metered Codex run from Chat, then check progress and steer it until it finishes.

    View prompt
    Using the Codexless repository at https://github.com/liyana31811/Codexless, ask ChatGPT to run <task> through the Codex model after showing the approval with its Task ID. Verify the outcome by reading the final Result and its verification evidence before reporting completion.

Quick start with Codexless

  1. Check you have what it needs: Node.js 22 or newer; A working local Codex installation (Codex Desktop is optional if a working CLI or runtime is available); A supported platform: Windows, Apple Silicon macOS (arm64), or Ubuntu Linux (x64) Technical Preview.
  2. Open liyana31811/Codexless on GitHub and read the README and license.
  3. Clone or download the Codexless source tree for the release you want, then run .\bin\codexless-install.cmd on Windows or sh ./bin/codexless-install.sh on Apple Silicon macOS.
  4. Check your project with & "$env:LOCALAPPDATA\Codexless\bin\codexless-doctor.cmd" --cwd "C:\path\to\your\project" on Windows, or "$HOME/Library/Application Support/Codexless/app/bin/codexless-doctor.sh" --cwd "/path/to/your/project" on macOS.
  5. Start the HTTP service with & "$env:LOCALAPPDATA\Codexless\bin\codexless-http.cmd" on Windows, or "$HOME/Library/Application Support/Codexless/app/bin/codexless-http.sh" on macOS.
  6. Expose the local endpoint through an authenticated Tunnel or remote MCP endpoint and connect it to ChatGPT as a custom app or developer-mode MCP connection.

These steps come from our top use case, Let ChatGPT inspect and edit a local project, which also has a copy-paste agent prompt.

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Codexless alternatives · Best AI repos for Software and DevOps

About this repo

  • Who it is forDevelopers and power users who already use ChatGPT and Codex on a Windows or Apple Silicon Mac machine (or Ubuntu Linux preview) and want ChatGPT to work on local projects, browsers, or Excel workbooks.
  • Why it is hot120 stars, launched 72 days ago
  • LanguageJavaScript
  • Sourcegithub.com/liyana31811/Codexless · Back to Hot repos

Requirements

  • Node.js 22 or newer
  • A working local Codex installation (Codex Desktop is optional if a working CLI or runtime is available)
  • A supported platform: Windows, Apple Silicon macOS (arm64), or Ubuntu Linux (x64) Technical Preview
  • A ChatGPT plan; Plus and Pro have been verified working
  • An authenticated Tunnel or remote MCP endpoint, plus a ChatGPT custom app or developer-mode MCP connection, so ChatGPT can reach your local Codexless

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Questions about Codexless

What is Codexless?

Codexless is an independent preview that lets ChatGPT use a reviewed set of local tools backed by your existing Codex environment, and call the Codex model only when a task needs it. It is an open-source project on GitHub: https://github.com/liyana31811/Codexless.

How do I use Codexless?

Clone or download the Codexless source tree for the release you want, then run .\bin\codexless-install.cmd on Windows or sh ./bin/codexless-install.sh on Apple Silicon macOS; then check your project with & "$env:LOCALAPPDATA\Codexless\bin\codexless-doctor.cmd" --cwd "C:\path\to\your\project" on Windows, or "$HOME/Library/Application Support/Codexless/app/bin/codexless-doctor.sh" --cwd "/path/to/your/project" on macOS. The use cases on this page give the full steps and a copy-paste agent prompt for each job.

Who is Codexless for?

Developers and power users who already use ChatGPT and Codex on a Windows or Apple Silicon Mac machine (or Ubuntu Linux preview) and want ChatGPT to work on local projects, browsers, or Excel workbooks.

What can I do with Codexless?

4 use cases so far, for example: Let ChatGPT inspect and edit a local project; Let ChatGPT work in your signed-in Chrome or Edge; Read and update a connected Excel workbook from Chat. Each has steps and a copy-paste agent prompt.

What do I need to run Codexless?

Node.js 22 or newer; A working local Codex installation (Codex Desktop is optional if a working CLI or runtime is available); A supported platform: Windows, Apple Silicon macOS (arm64), or Ubuntu Linux (x64) Technical Preview; A ChatGPT plan; Plus and Pro have been verified working.

What are alternatives to Codexless?

Other hot AI repos in Software and DevOps: Deep Infer, Harness2, Orca, Opencode, Graphify.

Is Codexless safe to run?

Deduped does not own, audit or vouch for it. Read the README and license, run it on your own systems first and review every command before you run it.