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DeepSeek Harness Adds Native Image Requests and Makes Auxiliary Agents Optional

The release brings usable multimodal workflows inside the harness while requiring migration planning because the updated SQLite schema is not compatible with older installs.

Overview

  • The new release enables native image requests through model adapters and lets formerly text-only commands such as /goal and /plan accept images so prompts can include screenshots, files and past dialogue.
  • Persistent image attachments were added to the message and attachment persistence systems and PTC Mode can now forward nested images so images stay available across multiple calls.
  • The update fixes two common image failure modes that caused requests to fail: oversized image payloads and accumulated historical-image payloads in multi-turn conversations.
  • Claude Code and Codex were removed from the base distribution and converted to on-demand Profile Bundles, and Codex gained a non-interactive mode, support for multiple named instances, and improved child-to-parent task reporting.
  • Tooling and performance changes include concurrent web_search queries, persistent PowerShell sessions on Windows PTY, and faster, smaller SQLite storage at the cost of an incompatible schema; DeepSeek v4 has not released a visual model yet but third-party visual models can be used with the new adapters and users should follow the project migration notes and brand rules.