Skills/npm/deck

deck@0.12.0

VERIFIED· not started

Publisher claims: "Kadal Deck: build it, rehearse it, own the room. Talks written in MDX, with an MCP server and CLI for your AI agent, narration and a teleprompter to rehearse, a phone remote to present, and a live room for polls, Q&A and reactions. Export to PDF, PNG and " Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher kadal · publishing for 36 daysInstalls 13,952Last detonated 7d ago
$claude mcp add deck -- npx -y @kadal/deck
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Coverage

Not started: dependency install failed; the server itself was not observed.
Tested
the dependency install step · every file read, file written and host contacted by what ran
Not tested
server startup · the tool list · tool behavior

What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.

Before you give it your token

Code inventory arrives with this version's next honeypot run.
It will ask for
unknown until the next run
Where it talks to
unknown until the next run
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Not enough was observed to say yet. Not started: dependency install failed; the server itself was not observed. This version's code has not been inventoried for credentials and hosts either; both arrive with its next honeypot run (popular servers first). `vet-skills try deck` runs it now and prints the full answer.

Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.

Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; not started: dependency install failed; the server itself was not observed) on 2026-11-07 and scored it 85/100 (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 · 1 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.9sprocessdependency install exit 1
1.1sprocessexec /usr/bin/date
1.1sprocessexec /usr/bin/timeout
1.1sclaimedno tools/list reply (exit 0)
1.1sprocessscript backend runs setup only
1.1sprocessno install scripts to re-run

Static findings

HIGH
Hidden zero-width characters detecteddist/sync/mdx.js:688 · Hidden zero-width characters detected — may conceal contenttext: no.bom ? `${text}` : text,Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
HIGH
Hidden zero-width characters detecteddist/sync/mdx.js:626 · Hidden zero-width characters detected — may conceal contentconst bom = text.startsWith("");Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
MEDIUM
npx invocation of non-well-known packagedist/cli/hosting.js:326 · npx invocation of non-well-known package — may execute untrusted codecase "cloudflare": return `Cloudflare: ${build} && npx wrangler deploy`;Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/cli/hosting.js:243 · npx invocation of non-well-known package — may execute untrusted codecontent: `// Cloudflare Workers static assets: \`${build} && npx wrangler deploy\`.Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/cli/render.js:114 · npx invocation of non-well-known package — may execute untrusted codethrow new MissingDependencyError("Rendering slides needs Playwright and Chromium. In the deck folder run: npm install -D playwright && npx playwright install chromium");Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/cli/hosting.js:68 · npx invocation of non-well-known package — may execute untrusted coderun: (b) => `npx ${b}`Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
HIGH
Hidden zero-width characters detecteddist/sync/mdx.js:587 · Hidden zero-width characters detected — may conceal contentconst t = text.replace(/^/, "").replace(/\r\n?/g, "\n");Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.
AST07
MEDIUM
npx invocation of non-well-known packagedist/cli/hosting.js:22 · npx invocation of non-well-known package — may execute untrusted code* (`npx wrangler deploy` after the build); Pages' Git integration needs no fileFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/mcp/index.js:813 · npx invocation of non-well-known package — may execute untrusted codecommand: "npx kadal-deck login"Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/mcp/index.js:811 · npx invocation of non-well-known package — may execute untrusted codeif (!await loadCredentials()) return failure("Not signed in to a Kadal Deck host. Ask the person to run `npx kadal-deck login` in a terminal (it opens a browser to approve this machine), or to set KADFix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/mcp/index.js:865 · npx invocation of non-well-known package — may execute untrusted codeconst NOT_SIGNED_IN = "Not signed in to a Kadal Deck host. Ask the person to run `npx kadal-deck login` (or set KADAL_DECK_TOKEN), then try again.";Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/mcp/index.js:942 · npx invocation of non-well-known package — may execute untrusted codecommand: "npx kadal-deck login"Fix: Pin versions and sources; vendor anything fetched at install time.
AST06
MEDIUM
npx invocation of non-well-known packagedist/cli/render.js:146 · npx invocation of non-well-known package — may execute untrusted codeif (/Executable doesn't exist|playwright install/i.test(msg)) throw new MissingDependencyError("Playwright is installed but Chromium is not. Run: npx playwright install chromium");Fix: Pin versions and sources; vendor anything fetched at install time.
AST06

Cost to the agent

Instructions loaded
≈98 tok
1 file · 81 in bundle
Tool list per prompt
≈0 tok
0 tools · 0 per tool
Handshake
no reply
launch to tools/list, stdio
Undocumented tools
0
description under 20 chars · avg 0

Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.

Known vulnerabilities

No advisories in OSV for @kadal/deck@0.12.0 as of 7d ago. This is the package itself, not its dependencies.