Skills/PyPI/mcp-virtual-computer

mcp-virtual-computer@0.2.11

VERIFIED· not started

Publisher claims: "A persistent Docker or Fly computer with a cinematic Three.js MCP App" Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry PyPI (MCP server)Publisher flujo-app · publishing for 103 daysInstalls 278Last detonated 4d ago
$claude mcp add mcp-virtual-computer -- uvx mcp-virtual-computer
WatchReport an issue

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
FLY_API_TOKENFLY_TOKENKILNTAINERS_AUTH_TOKENVNC_PATH_TOKEN or --fly-token / --auth-token / --allow-unauthenticated-httpConfiguration, not credentials: BACKEND, COMPUTER_ID, FLY_APP_NAME, FLY_ORG, FLY_REGION, FLYCTL_INSTALL, KILNTAINERS_FLY_STATE_FILE, ProgramFiles
Where it talks to
no vendor host named in the codeAlso fly.io, downloads.example, docker.com — not the publisher's domain; check what for before connecting.
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, and read the third-party hosts first. The code names fly.io, downloads.example, docker.com as well as its own vendor. The guard injects FLY_API_TOKEN, FLY_TOKEN, KILNTAINERS_AUTH_TOKEN, VNC_PATH_TOKEN only into requests to the host you bind (and its subdomains) and refuses the rest.

$vet-skills run --net declared -- uvx mcp-virtual-computer

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 80/100 (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 · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.1sprocessdependency install exit 1 ·
0.1sclaimednot started: dependency install failed (exit 1); the server itself was not observed
0.1sprocessscript backend runs setup only
0.1sprocessno install scripts to re-run

Static findings

MEDIUM
File permission modification commandsrc/kilntainers/desktop_image/Dockerfile:57 · File permission modification command — agent changes file ownership/permissions&& chown computer:computer /home/computer/.config/mimeapps.listFix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/desktop_image/Dockerfile:45 · File permission modification command — agent changes file ownership/permissions&& chmod 0440 /etc/sudoers.d/computer \Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Access to sensitive file pathssrc/kilntainers/desktop_image/Dockerfile:46 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files&& visudo -cf /etc/sudoers.d/computer \Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/desktop_image/desktop-control.py:33 · Python subprocess execution detectedreturn subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/desktop_image/desktop-control.py:624 · Python subprocess execution detectedprocess = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/backends/test_docker_integration.py:213 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/fly.py:769 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {NETWORK_MODE_FILE}"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/fly.py:793 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {NETWORK_MODE_FILE}"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/backends/test_docker_integration.py:263 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/docker.py:1085 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {NETWORK_MODE_FILE}"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/docker.py:791 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {NETWORK_MODE_FILE}",Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/desktop_image/Dockerfile:63 · File permission modification command — agent changes file ownership/permissionsRUN chmod 0755 \Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Destructive file system command detectedsrc/kilntainers/desktop_image/Dockerfile:40 · Destructive file system command detected&& rm -rf /var/lib/apt/lists/*Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/desktop_image/desktop-control.py:465 · Python subprocess execution detectedprocess = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Privileged sudo commandsrc/kilntainers/desktop_image/Dockerfile:28 · Privileged sudo command — agent may execute with elevated privilegessudo \Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
HIGH
Destructive file system command detectedsrc/kilntainers/backends/fly.py:767 · Destructive file system command detected"rm -f /run/mcp-network-disabled; "Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Access to sensitive file pathssrc/kilntainers/desktop_image/Dockerfile:44 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files> /etc/sudoers.d/computer \Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/docker.py:859 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {DESKTOP_MODE_FILE}"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
HIGH
Destructive file system command detectedsrc/kilntainers/desktop_image/start-desktop.sh:54 · Destructive file system command detectedrm -f /run/mcp-network-disabledFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commandsrc/kilntainers/backends/test_virtual_docker.py:423 · Process kill command — agent can terminate processes"old=$(pgrep -o x11vnc) || exit 1; kill \"$old\"; i=0; "Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Access to sensitive file pathssrc/kilntainers/desktop_image/Dockerfile:45 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system files&& chmod 0440 /etc/sudoers.d/computer \Fix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/fly.py:819 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {DESKTOP_MODE_FILE}",Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/backends/test_docker_integration.py:252 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
HIGH
Destructive file system command detectedsrc/kilntainers/backends/docker.py:1083 · Destructive file system command detected"rm -f /run/mcp-network-disabled; "Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/backends/test_docker_integration.py:47 · Python subprocess execution detectedresult = subprocess.run([engine, "info"], capture_output=True, text=True)Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/backends/docker.py:1124 · File permission modification command — agent changes file ownership/permissionsf"chown computer:computer {NETWORK_MODE_FILE}"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/desktop_image/start-desktop.sh:26 · File permission modification command — agent changes file ownership/permissionschown computer:computer "$desktop_state_file"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/backends/test_docker_integration.py:225 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/windows_docker.py:379 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_lifecycle_integration.py:273 · Python subprocess execution detectedsubprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/file_tools.py:245 · File permission modification command — agent changes file ownership/permissionschmod --reference="$p" "$tmp"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/desktop_image/visual-action.py:118 · Python subprocess execution detectedsubprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Process kill commandsrc/kilntainers/desktop_image/start-desktop.sh:162 · Process kill command — agent can terminate processesif [ -n "$desktop_pid" ] && kill -0 "$desktop_pid" 2>/dev/null; thenFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commandsrc/kilntainers/desktop_image/start-desktop.sh:82 · Process kill command — agent can terminate processesif [ -n "$pulse_pid" ] && kill -0 "$pulse_pid" 2>/dev/null; thenFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commandsrc/kilntainers/desktop_image/start-desktop.sh:126 · Process kill command — agent can terminate processesif [ -n "$x11vnc_pid" ] && kill -0 "$x11vnc_pid" 2>/dev/null; thenFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/windows_docker.py:439 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Process kill commandsrc/kilntainers/test_http_lifecycle.py:50 · Process kill command — agent can terminate processes# Mock os.kill to capture callsFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
File type combined with upload actionsrc/kilntainers/test_http_lifecycle.py:292 · File type combined with upload action — agent may exfiltrate local data files# Client 1 should see a.txt in its ls outputFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
Python subprocess execution detectedsrc/kilntainers/windows_docker.py:396 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/windows_docker.py:292 · Python subprocess execution detectedprocess = subprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_cli_integration.py:93 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_lifecycle_integration.py:125 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_lifecycle_integration.py:214 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_cli_integration.py:22 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_cli_integration.py:126 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/windows_docker.py:419 · Python subprocess execution detectedsubprocess.Popen(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Process kill commandsrc/kilntainers/desktop_image/start-desktop.sh:147 · Process kill command — agent can terminate processesif [ -n "$wsproxy_pid" ] && kill -0 "$wsproxy_pid" 2>/dev/null; thenFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commandsrc/kilntainers/desktop_image/start-desktop.sh:97 · Process kill command — agent can terminate processesif ! kill -0 "$pulse_pid" 2>/dev/null || [ "$count" -gt 100 ]; thenFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_cli_integration.py:81 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Process kill commandsrc/kilntainers/test_http_lifecycle.py:76 · Process kill command — agent can terminate processesos.kill = original_killFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
File type combined with upload actionsrc/kilntainers/test_http_lifecycle.py:302 · File type combined with upload action — agent may exfiltrate local data files# Client 2 should see b.txt in its ls outputFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07
MEDIUM
Process kill commandsrc/kilntainers/test_lifecycle_integration.py:346 · Process kill command — agent can terminate processes# In HTTP mode, we can't easily kill the sandbox and detect deathFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_cli_integration.py:105 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_lifecycle_integration.py:87 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Process kill commandsrc/kilntainers/test_lifecycle_integration.py:272 · Process kill command — agent can terminate processes# Actually kill the container externallyFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
File permission modification commandsrc/kilntainers/desktop_image/start-desktop.sh:33 · File permission modification command — agent changes file ownership/permissionschown computer:computer "$network_state_file"Fix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05
MEDIUM
Process kill commandsrc/kilntainers/test_http_lifecycle.py:57 · Process kill command — agent can terminate processesos.kill = mock_kill # type: ignore[assignment]Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Process kill commandsrc/kilntainers/test_lifecycle_integration.py:300 · Process kill command — agent can terminate processes"""Monitor death and kill externally."""Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/test_lifecycle_integration.py:102 · Python subprocess execution detectedresult = subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Python subprocess execution detectedsrc/kilntainers/desktop_image/visual-action.py:21 · Python subprocess execution detectedreturn subprocess.run(Fix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05
MEDIUM
Process kill commandsrc/kilntainers/test_http_lifecycle.py:51 · Process kill command — agent can terminate processesoriginal_kill = os.killFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05

Cost to the agent

Instructions loaded
≈58 tok
1 file · 57 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 mcp-virtual-computer@0.2.11 as of 4d ago. This is the package itself, not its dependencies.