Skills/npm/studio-mcp

studio-mcp@0.21.1

VERIFIED· not started

Publisher claims: "Model Context Protocol (MCP) server over the Lumitra Studio HTTP API: generate images, mint characters, run workflows, swap characters into video." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server)Publisher marlinjai · publishing for 74 daysInstalls 3,363Last detonated 4d ago
$claude mcp add studio-mcp -- npx -y @marlinjai/studio-mcp
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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

It will ask for
LEGACY_API_KEY_VARConfiguration, not credentials: MAX_COMPOSITION_PATCH_OPS, MAX_KEYFRAMES, MAX_PATCH_OPS
Where it talks to
lumitra.co (its own)
What the honeypot saw
no credential files read · no network
What we could not test
server startup · the tool list · tool behavior

Connect it with a scoped credential, under the guard. It asks for LEGACY_API_KEY_VAR and talks to lumitra.co. Give the credential to the guard, not the server: the value never enters the server's environment and only travels to the host you bind. What the tools do with a real credential was not observed.

$vet-skills run --secrets LEGACY_API_KEY_VAR=lumitra.co -- npx -y @marlinjai/studio-mcp

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 2026-11-10 and scored it 90/100 (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 · npm error code EUNSUPPORTEDPROTOCOL npm error Unsupported URL Type "workspace:": workspace:* npm error A complete log of this run can be found in: /tmp/ks-detonate-X7nuEx/task/home/.npm/_logs/2026-11-10T02_39_50_087Z-debug-0.log
0.9sclaimednot started: dependency install failed (exit 1); the server itself was not observed
1.0sprocessscript backend runs setup only
1.0sprocessno install scripts to re-run

Static findings

MEDIUM
File type combined with upload actiondist/cli.js:185 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", `/api/v1/workflows/${encodeURIComponent(savedId2)}/move`, { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/cli.js:212 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/v1/prompts", { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/index.js:109 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/v1/projects", { json: { name } });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/index.js:132 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", `/api/v1/workflows/${encodeURIComponent(savedId2)}/move`, { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/cli.js:162 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/v1/projects", { json: { name } });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/cli.js:238 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/generate?force=3d", { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/cli.js:229 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/generate", { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/index.js:185 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/generate?force=3d", { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/index.js:159 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/v1/prompts", { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
File type combined with upload actiondist/index.js:176 · File type combined with upload action — agent may exfiltrate local data filesreturn this.json("POST", "/api/generate", { json: body });Fix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07

Cost to the agent

Instructions loaded
≈75 tok
1 file · 11 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 @marlinjai/studio-mcp@0.21.1 as of 4d ago. This is the package itself, not its dependencies.