dsh-fylar-office-editor: Open and Edit Office Documents in DeepSeek Harness

What Does It Do?

Fylar Office Editor is a DSH plugin for DeepSeek Harness that turns Office files produced by an agent into documents you can open, review, edit, and download without leaving the harness. It removes the need to leave the conversation just to inspect or modify a generated DOCX, XLSX, or PPTX. Built in TypeScript by FylarOpen and powered by the Fylar Office SDK, it was last updated in 2026-09.

Core Features

• Office files in the conversation: open a delivered file inline, move the same editing session to the side panel, or enter fullscreen.
• Real DOCX generation: converts the agent's Markdown response into an OOXML Word document, covering headings, paragraphs, lists, simple tables, code blocks, bold, italic, and inline code.
• Word, Excel, and PowerPoint editing: open supported local or workspace files, or create blank documents from the Office tab.
• One persistent editing session: moving between Chat, the Office tab, the side panel, and fullscreen does not reopen the document.
• Export instead of silent overwrite: browser edits stay in the SDK session until you download the edited Office file.
• Workspace-confined file access: the Host only serves supported files from registered DSH workspace roots and blocks traversal and symlink escapes.

How to Use This Plugin?

Once enabled in the DSH Web profile, the plugin adds a delivery card to the conversation, an Office workspace tab, a side-panel editor, and a fullscreen editor. When the agent replies in Markdown, it can turn that content into a real DOCX; when Python, shell commands, or other tools create DOC, DOCX, XLS, XLSX, or PPTX files in the current workspace, you can open them from the Office tab or start a blank document there. Editing stays in a single session, so switching views never reopens the file, and you download the edited Office file when you are done. The plugin shell follows the DSH locale and ships English and Simplified Chinese UI. Requirements include DeepSeek Harness 0.1.5-rc.1, Node.js ^22.19.0 or >=24.0.0, the DSH Web profile, a modern browser with Worker, SharedWorker, WebAssembly, IndexedDB, Blob, and ArrayBuffer support, and a valid Fylar Office SDK License Credential.

How to Troubleshoot This Plugin?

The plugin requires DSH 0.1.5-rc.1 because it uses the right-Sidebar tab API introduced by that release candidate line; if the version does not match, follow the official instructions to move to the required release. If a document fails to open or render, first confirm the browser supports Worker, SharedWorker, WebAssembly, IndexedDB, Blob, and ArrayBuffer. If you see authorization errors, check that the Fylar Office SDK License Credential is valid; the bundled commercial license includes a Free Allowance of up to 3,000 Metered Uses, after which an active paid entitlement is required. If file access is denied, make sure the target file sits inside a registered DSH workspace root, since traversal and symlink escapes are actively blocked.