YOUR SUBSCRIPTION. MORE POSSIBILITIES.
Your ChatGPT.
Your DeepSeek Harness.
Better together.
Bring your ChatGPT subscription into the workspace you already know. Read, create, and build with GPT and Harness tools.
For DeepSeek Harness onlyNot for the regular DeepSeek chat website, mobile app, or chat desktop client.
Harness desktop 0.2.0-rc.2 · macOS · MIT
ONE WORKSPACE, MORE POSSIBILITIES
Keep your flow.
Expand your toolkit.
Your account and your choice of models, with the tools already in Harness.
- Your own subscriptionsign in and authorize access on OpenAI's page.
- GPT and DeepSeek togetherswitch models in a conversation, or make GPT the default for new conversations.
- Images and toolsuse image-capable models with attachments and Harness's built-in tools.
- Adjust reasoning effortchoose a level in the native model menu; available levels and defaults follow your account model.
- Models load automaticallysee models available to the connected account; add and switch accounts in settings.
- Free and open sourceMIT licensed. Your account determines model access and subscription limits.
FROM SIGN-IN TO YOUR FIRST IDEA
Three steps. You’re in.
Harness desktop 0.2.0-rc.2 on macOS · An eligible ChatGPT account is required.
- 01
Install the plugin
Open Plugins → Add plugin. Paste the package below and select the official npm registry. Click Install, then fully quit and reopen Harness after current tasks finish.
Official npm registry ↗dsh-codex-official-adapter@0.1.5 - 02
Connect your account
Open Settings → ChatGPT 订阅 → 连接 ChatGPT. Follow the link to OpenAI, sign in, and authorize your account. Models load automatically when you return.
- 03
Start creating
Start a new conversation. Choose a model under “ChatGPT plan (Sign in with ChatGPT)”, then ask a question, attach an image, or work on your project.
Read this project and explain what it does.
A FEW THINGS TO KNOW
Good questions.
Clear answers.
Which product does this plugin support? DeepSeek Harness only. It cannot be installed in the regular DeepSeek chat website, mobile app, or regular chat desktop client. The currently validated host is Harness desktop 0.2.0-rc.2 on macOS.
How do I use my ChatGPT subscription in DeepSeek Harness? Install dsh-codex-official-adapter@0.1.5, connect your own ChatGPT account in settings, and choose a model under ChatGPT plan. No API key is required. Your account determines model access and usage limits.
Can I install from GitHub? The source is at https://github.com/diwer/dsh-codex-adapter. Installer support varies across hosts and marketplaces; prefer the exact package name and version above.
No models after sign-in? Click 刷新模型. Check account permissions, usage limits, and network access. Available models come from your account.
Upgrading? Install the newer version using the same package name and restart Harness. Keep your existing Profile and account directory.
Uninstalling? Sign out in plugin settings, then uninstall in Plugins. See privacy and account removal.
Your workspace. Your choice.
Conversation text, selected images, and tool results are sent to OpenAI. Credentials are stored in local, unencrypted files restricted to your user. Model access and usage limits depend on your account.
An independent community project. Not affiliated with OpenAI or DeepSeek.