DeepSeek Harness v0.2.2-alpha.2 adds subagent_oar to hand tasks to local Codex CLI or Claude Code

DeepSeek Harness, DeepSeek's open-source agent runtime, published pre-release v0.2.2-alpha.2 on GitHub on October 28, adding an experimental subagent_oar plugin.

The plugin lets the main agent send a self-contained task to a Codex CLI or Claude Code installation on the same machine. The tool returns a task ID immediately and sends the final answer or error back in a completion notice, and the main conversation is not forwarded.

Codex CLI and Claude Code keep their own sign-in, models, tools and settings, so users must install and log in to each one and make sure the Harness host can find it. Tasks are one-shot, with no follow-up questions, session resume or live progress stream. Cancelling a task does not undo file changes it has already made.