Codex Conversations for DeepSeek Harness

Stable 0.2.4 is verified on official DSH 0.1.5-rc.2 and 0.1.6-alpha.1. It refreshes Codex models after runtime changes and keeps enhanced mode usable when DSH contributes mcp__-prefixed tools, while preserving the compatibility guarantees from 0.2.3. Install it from npm · Compatibility evidence.

Release channels: latest → 0.2.4; next → 0.2.5-rc.1.

npx @deepseek-ai/[email protected] plugin --profile web add relay-dsh-plugin-codex@latest
npx @deepseek-ai/[email protected] web

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npm package: relay-dsh-plugin-codex · All Relay DSH plugins

Run Codex inside official DeepSeek Harness without switching interfaces or maintaining a DSH fork.

relay-dsh-plugin-codex adds Codex as a native conversation backend to the official DeepSeek Harness (DSH) Web UI. You keep DSH's workspace, conversation history, composer, approvals, and tools while each DSH Session continues one Codex App Server Thread. The plugin installs independently; no Relay checkout is required.

Try It on Official DSH

Authenticate with an official Codex client before the first Session. Codex CLI users can run:

codex login

The install requires Node.js 22.13 or newer and pnpm on PATH. Stop DSH Web, install the stable plugin, and restart DSH:

npx @deepseek-ai/[email protected] plugin --profile web add relay-dsh-plugin-codex@latest
npx @deepseek-ai/[email protected] web

Open New Session, select a workspace, choose Codex from the mode menu, and send a message.

The screenshot was captured from official DSH 0.1.1-rc.2 with the Codex and Claude plugins installed. If you install only this plugin, only Codex is added.

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If this removes an interface switch from your DSH workflow, star this plugin and share your DSH version or install feedback. That signal helps other DSH users find a tested Codex backend.

Do I Need This Plugin?

Install it when you want to:

• use Codex inside DSH instead of switching to a separate Codex interface;
• keep DSH's native conversation history, composer, approvals, and questions;
• let one DSH Session continue the same Codex App Server Thread across turns;
• use Codex models, reasoning effort, images, interruption, and DSH-contributed tools in the same conversation.

You do not need it to use DSH's standard agents. It also does not add Relay Events, file browsing, or a terminal panel. Those are separate optional plugins.

Complete Setup and Compatibility

The steps below were validated with:

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