Skills/npm/polotno

polotno@4.20.0

VERIFIED· install only

Publisher claims: "Design editor SDK: embed a Canva-like editor, generate designs from templates and data, export PNG, PDF, and video in the browser or on a server." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher polotno-project · publishing for 2411 daysInstalls 218KLast detonated 3d ago
$claude mcp add polotno -- npx -y polotno
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Coverage

Nothing executable in the bundle ran; the trace covers the install step only.
Tested
every file read, file written and host contacted by what ran
Not tested
use of the skill by an agent

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (1 scenario; nothing executable in the bundle ran; the trace covers the install step only) on 2026-11-11 and scored it 93/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed; the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.

Behavior trace

Honeypot run · 0 s · 1 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.0sprocessscript backend runs setup only
0.0sprocessscript backend runs setup only
0.0sprocessno install scripts to re-run

Static findings

MEDIUM
File type combined with upload actionutils/file.js:1 · File type combined with upload action — agent may exfiltrate local data files….result),t.onerror=e=>i(e)})}export const MEDIA_ACCEPT="image/*,video/*,audio/*,.json,.lottie";const e={svg:"svg",gif:"gif",lottie:"lottie",png:"image",jpg:"image",jpeg:"image",webp:"image",avif:"image",bmp:"image",heic:"image",mp4:"video"…Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07

No other findings across 2,258 lines in 81 files.

Cost to the agent

Instructions loaded
≈60 tok
1 file · 81 in bundle

Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.

Known vulnerabilities

No advisories in OSV for polotno@4.20.0 as of 3d ago. This is the package itself, not its dependencies.