English

Product LaunchesDeepSeek Harness

deepseek-harness v0.1.2-alpha.1-3 Released — Conversation UI Overhaul and Sub-agent Control Added

By the editors ／ Model: Qwen3.8-27B (MTP)As of: 2026-09-01

This article is a translation. Read the Japanese original

Between August 27 and 31, deepseek-harness released three updates from v0.1.2-alpha.1 to alpha.3. The primary changes center on the overhaul of the conversation stream UI and the implementation of model control for sub-agents.

Key New Features and Improvements:

  • In the conversation stream, process details and System prompts are now collapsed before the final response, with token usage and elapsed time displayed.
  • Added the ability to specify the provider, model, inference strength, and maximum output length when launching sub-agents. Claude Code and Codex sub-agents now also support model settings.
  • ACP now includes standard session control, model settings, MCP, permissions, and cancellation functions.
  • Added a Windows x64 distribution package to the Python SDK runtime.
  • Added connection anomaly displays, automatic retries, and immediate reconnection.
  • Improved memory usage and syntax highlighting responsiveness when rendering long conversations.

Key Fixes:

  • Fixed issues with the display and delivery of images added or queued during a conversation.
  • Fixed read_image to recognize and read image attachment paths that lack extensions.
  • Fixed startup failures and HMR issues in Node.js 24.0–24.11.1.
  • Fixed an issue where backend stalls were incorrectly identified as network disconnections.

Optional SQLite Session persistence backends have been removed (existing data is retained, but export via an older version is required). Code Mode has been renamed to PTC mode.

Sources

  1. dsh-v0.1.2-alpha.3 （2026-09-01）
  2. dsh-v0.1.2-alpha.2 （2026-08-30）
1 more sourcesHide sources
  1. dsh-v0.1.2-alpha.1 （2026-08-28）

Related