Apache-2.0 dsh plugin that brings ChatGPT Codex models into DeepSeek Harness via OAuth sign-in — no OpenAI API key needed.
DSH integration
Native runtime
Author-claimed
Safety audit
Unaudited
Last verified
2026-09-01
License
Apache-2.0
01What can it help you accomplish?
Run ChatGPT / Codex models inside DeepSeek Harness without an OpenAI Platform API key
A connected ChatGPT OAuth session plus the Codex GPT catalog (streaming, tool calls, reasoning replay, prompt caching, dsh compaction) through the normal LLM service
DeepSeek Harness (dsh) users with a ChatGPT subscription who want Codex models without buying OpenAI API access
Generate images from prompts inside DeepSeek Harness
An `imagegen` tool backed by `gpt-image-2`, with workspace or conversation reference images and automatic workspace output
dsh users who need image generation alongside code and chat
02How to install into DeepSeek Harness
Prerequisites
- DeepSeek Harness (dsh) installed with a profile — the install commands invoke the `dsh` CLI (`dsh plugin --profile web add dsh-codex`, then `dsh web`)
Installation steps
- 01
Install the prebuilt bundle from npm into the selected dsh profile: `dsh plugin --profile web add dsh-codex`
$ dsh plugin --profile web add dsh-codex
- 02
Start the web profile: `dsh web`
$ dsh web
- 03
From a DeepSeek Harness source checkout, use `pnpm dsh plugin --profile web add dsh-codex`
- 04
For local development, install a linked checkout with `link:/absolute/path/to/dsh-codex`
- 05
Sign in: open **Settings → OpenAI Codex → Sign in with ChatGPT**; the plugin completes OpenAI's localhost callback
Verify the integration
- The account page shows live Codex quota bars and exact remaining percentages
03DSH integration and capability boundaries
Native dsh plugin bundle installed via `dsh plugin add`, extending the LLM service and dsh's web_search / read_image / paste-drop tools
ChatGPT OAuth sign-in
DeepSeek Harness Settings panel or a standalone CLI→ChatGPT OAuth session with automatic token refresh
Codex GPT catalog
ChatGPT account→Codex GPT model catalog, including vision-capable models when the account offers them
Streaming, tool calls & dsh compaction
normal LLM service requests→streaming, tool calls, reasoning replay, prompt caching, and dsh compaction
Codex web search
dsh's existing `web_search` tool→Codex standalone web search results
imagegen tool (gpt-image-2)
text prompts, with optional workspace or conversation reference images→generated images with automatic workspace output
04Who is it for? When not to use it?
Good for
- DeepSeek Harness (dsh) users with a ChatGPT subscription who want Codex models without buying OpenAI API access
- dsh users who need image generation alongside code and chat
Not for
- Uses only the ChatGPT Codex backend; it does not turn a ChatGPT subscription into a general-purpose OpenAI API credential (different from usage-based OpenAI API access).
05Compatibility, maintenance and safety notes
- Uses only the ChatGPT Codex backend; it does not turn a ChatGPT subscription into a general-purpose OpenAI API credential (different from usage-based OpenAI API access).
- Exact credit balances or workspace limits appear only when the account API supplies them.
Apache-2.0 independent dsh bundle; no tagged GitHub release; last push 2026-08-20
06Frequently asked questions
Do I need an OpenAI Platform API key to use dsh-codex?
No. dsh-codex uses OpenAI's Codex sign-in flow with your ChatGPT subscription — no OpenAI Platform API key is required and no dsh source patch is needed. It does not turn a subscription into a general-purpose OpenAI API credential.
How do I install dsh-codex into DeepSeek Harness?
Install the prebuilt bundle from npm into your dsh profile with `dsh plugin --profile web add dsh-codex`, then run `dsh web`. From a source checkout use `pnpm dsh plugin --profile web add dsh-codex`; for local dev link a checkout with `link:/absolute/path/to/dsh-codex`.
How do I sign in with ChatGPT?
Open Settings → OpenAI Codex → Sign in with ChatGPT. The plugin opens OpenAI's authorization page and completes the localhost callback; loopback Web pages are trusted automatically. The account page then shows live Codex quota bars.
What models and features does dsh-codex add?
It adds the Codex GPT catalog (including vision-capable models when your account offers them), streaming, tool calls, reasoning replay, prompt caching, dsh compaction, Codex web search via dsh's web_search, optional HTTP(S) image input for read_image, an imagegen tool backed by gpt-image-2, and browser image input through dsh's paste and drop controls.
Is a ChatGPT subscription the same as OpenAI API access?
No. ChatGPT subscription authentication and usage-based OpenAI API access are different products. This plugin uses the ChatGPT Codex backend only; it does not convert a subscription into a general-purpose OpenAI API credential.
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08Data and sources
`dsh-codex` is an independent dsh bundle. It adds:
streaming, tool calls, reasoning replay, prompt caching, and dsh compaction through the normal LLM service
This page is generated from the project’s public documentation, repository metadata and a structured parse of DSH Plugins; last verified on 2026-09-01. Found an error? Submit a correction.
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