IWAIBAOLI/dsh-with-pencil
C3Official Pencil (pen.dev) canvas inside DeepSeek Harness: conversation-bound workspaces, live agent edits, and 7 MCP design tools — headless engine + browser editor.
★ 10+ · IWAIBAOLI/dsh-with-pencil source on GitHub · this plugin in the registry
IWAIBAOLI/dsh-with-pencil is a DeepSeek Harness plugin rated C3 — powerful capability combined with sensitive behavior. It patches the dsh runtime, can rewrite the system prompt, command execution in build output only, executes commands in development tooling the package does not ship.
Installable plugin — declares a dsh.bundle manifest
What it can do
| Capability | Flag | Evidence |
|---|---|---|
| patches the dsh runtime | runtime_patch | ./cordis.patch.yml |
| can rewrite the system prompt | prompt_surface | system-prompt/assemble |
| command execution in build output only | exec_bundled | ×4 in build output only, e.g. lib/canvas-host.js:649, lib/headless-runtime.js:147 |
| executes commands in development tooling the package does not ship | exec_tooling | ×21 in development tooling the package does not ship, e.g. scripts/dev-install.cjs:8, scripts/dev-install.cjs:8 |
| base64 decoding in build output only | base64_decode_bundled | ×3 in build output only, e.g. lib/editor-assets.js:113, lib/ipc-binary.js:24 |
| reads credential-class env vars | token_env | PENCIL_CLI_KEY, PEN_CLI_KEY |
| powerful capability in test/example code only | dev_surface | in code that does not ship: subprocess, systemPrompt, webServer |
Services it injects
locale sidebarRight sidebarRightTabs slots
Hooks it attaches
agent/pre-step session/disposed system-prompt/assemble
Outbound domains
api.pencil.dev fauuw1qyejoc3spm.public.blob.vercel-storage.com
Environment variables it reads
DSH_PEN_EDITOR_DIR DSH_PEN_EDITOR_CACHE_DIR DSH_PEN_FILE DSH_PEN_MCP_APP PEN_CLI_KEY PENCIL_CLI_KEY DSH_PEN_LEGACY_TOOLS DSH_PEN_STATE_FILE
How to read this
Levels measure capability surface and transparency, not maliciousness. A C3 plugin can be entirely legitimate — a desktop shell genuinely needs subprocesses. The point is that you can see this before installing. See the levels explained and how dsh plugins work.
Findings come from static analysis of shipped code; nothing is executed. Think a flag is wrong? Open an issue — every flag cites the file and line it came from.