A native DSH plugin linking DeepSeek Harness to OpenPencil: the agent creates, edits and previews real .op design canvases via five transactional tools. Install via `dsh plugin --profile web add @zseven-w/dsh-openpencil@latest`. Needs the OpenPencil binary for exact rendering.
DSH integration
Native runtime
Author-claimed
Safety audit
Unaudited
Last verified
2026-08-23
License
MIT
01What can it help you accomplish?
Let the agent create, edit and preview real OpenPencil .op design documents inside a DeepSeek Harness conversation
Exact multi-frame previews, an interactive read-only canvas, and a managed editor driven by five tools (openpencil_new/create/edit/render/selection) via transactional batch_design programs
DeepSeek Harness users who design with OpenPencil and want the agent to drive a real, editable canvas instead of returning a generated image
02How to install into DeepSeek Harness
Prerequisites
- DeepSeek Harness installed (`npm install -g @deepseek-ai/dsh@0.1.1-rc.1`)
- OpenPencil desktop app or binary discoverable on the system (or the Jian fallback)
Installation steps
- 01
Run `dsh plugin --profile web add @zseven-w/dsh-openpencil@latest`
$ dsh plugin --profile web add @zseven-w/dsh-openpencil@latest
- 02
Start the web app with `dsh web`; the plugin serves client.js and stages the OpenPencil ESM SDK / WASM / CanvasKit via `pnpm run sync:viewer-assets`
$ dsh web
Verify the integration
Not specified by the author
Rollback
- The README documents the dev build/verify flow but no explicit uninstall command. Use the standard `dsh plugin remove` flow.
03DSH integration and capability boundaries
Native DSH plugin (@zseven-w/dsh-openpencil): connects DeepSeek Harness to OpenPencil so the agent edits a real, interactive .op design canvas.
Exact multi-frame previews
A .op document→First top-level frame as a replay-safe PNG plus a scrollable thumbnail rail with prev/next navigation
Viewer assets are lazy-loaded only after the user opens the canvas; if absent, PNG preview stays available and no canvas button is advertisedFive agent design tools
Transactional batch_design programs→openpencil_new/create/edit/render/selection let the agent create, modify and read a real canvas atomically through DSH's sandboxed filesystem
A new document is published only after the whole batch succeeds; the tool never overwrites an existing path and a failed batch leaves no empty fileCapability-gated grants
Image/document grants→Signed, hash-bound capabilities; browser metadata never exposes an arbitrary host path, and signed preview/editor capabilities never enter the canonical tool result or model context
Editor grants are issued only for recent, trusted live results; durable history can restore read-only previews
04Who is it for? When not to use it?
Good for
- DeepSeek Harness users who design with OpenPencil and want the agent to drive a real, editable canvas instead of returning a generated image
Not for
- Rendering needs the exact OpenPencil binary (discovered via DSH_OPENPENCIL_BINARY, the .app path, or PATH). If it is genuinely unavailable, only a clearly-labelled Jian runtime-preview fallback is produced; exact renderer failures do not silently fall back.
05Compatibility, maintenance and safety notes
- Rendering needs the exact OpenPencil binary (discovered via DSH_OPENPENCIL_BINARY, the .app path, or PATH). If it is genuinely unavailable, only a clearly-labelled Jian runtime-preview fallback is produced; exact renderer failures do not silently fall back.
- The lightweight Web SDK canvas is read-only; full editing uses the separate managed editor surface. On DSH 0.1.1-rc.1 the plugin uses the resizable right workbench with a full-screen option.
- Follow-up edits to an existing canvas require an already-open managed editor, and changes stay unsaved until the user invokes the editor's Save action; the plugin reports a conflict instead of overwriting if the source changes outside the editor.
MIT · 由 facts pack 抓取（README 分支 main）
06Frequently asked questions
How do I install DSH OpenPencil?
Run `dsh plugin --profile web add @zseven-w/dsh-openpencil@latest`, then `dsh web`. The plugin serves client.js and stages the OpenPencil ESM SDK, WASM and CanvasKit via `pnpm run sync:viewer-assets`.
What can the agent actually do?
Five tools — openpencil_new, openpencil_create, openpencil_edit, openpencil_render, openpencil_selection — let it create, modify and read a real canvas through transactional batch_design programs, with exact multi-frame previews and a read-only interactive canvas.
Is my data safe?
Image and document grants are signed, hash-bound capabilities. Browser metadata never exposes an arbitrary host path, and signed preview/editor capabilities never enter the canonical tool result or model context.
What if OpenPencil isn't installed?
Rendering needs the exact OpenPencil binary (found via DSH_OPENPENCIL_BINARY, the .app path, or PATH). If it is genuinely unavailable, the plugin produces only a clearly-labelled Jian runtime-preview fallback; exact renderer failures do not silently fall back.
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08Data and sources
The DeepSeek Harness plugin for OpenPencil — preview, inspect, and edit real <code>.op</code> documents inside a convers…
dsh plugin --profile web add @zseven-w/dsh-openpencil@latest
This page is generated from the project’s public documentation, repository metadata and a structured parse of DSH Plugins; last verified on 2026-08-23. Found an error? Submit a correction.
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