upscayl@0.8.0
VERIFIEDPublisher claims: "Enables remote agents and CLIs to send images to a Mac-hosted desktop upscaling engine over a home-LAN Streamable HTTP MCP connection, choose models and scaling options, and download upscaled results without requiring a local GPU or desktop app." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios) on 2026-11-06 and scored it 81/100 (Verified). It did what it claims and nothing else we could detect: no undeclared network egress, no credential reads, no persistent instruction writes. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 0 s · 2 scenarios · 0 deviationst+CategoryObserved action
0.0sprocessexited 127: bash: line 1: bun: command not found
0.0sprocessscript backend runs setup only
0.0sprocessscript backend runs setup only
0.0sprocesssecond launch, clock +45 days, CI unset
0.1sprocessexec /usr/bin/faketime
0.1sprocessexited 127: bash: line 1: bun: command not found
Static findings
MEDIUM
Python subprocess execution detected.github/workflows/release-smoke.yml:54 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05MEDIUM
Python subprocess execution detected.github/workflows/release-smoke.yml:49 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05HIGH
navigator.sendBeacon()src/web/main.tsx:93 · navigator.sendBeacon() — can silently exfiltrate dataFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07MEDIUM
Python subprocess execution detected.github/workflows/release-smoke.yml:50 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05MEDIUM
Python subprocess execution detected.github/workflows/release-smoke.yml:48 · Python subprocess execution detectedFix: Build commands from fixed arguments, never from interpolated strings; prefer an API client over shelling out.
AST05MEDIUM
File type combined with upload actionsrc/cli.ts:163 · File type combined with upload action — agent may exfiltrate local data filesFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07MEDIUM
Access to sensitive file pathstest/host-config.test.ts:113 · Access to sensitive file paths — SSH keys, AWS credentials, env files, or system filesFix: Stop enumerating or reading credential locations; take secrets from a declared environment variable the user sets on purpose.
AST05MEDIUM
File type combined with upload actionsrc/mcp.ts:23 · File type combined with upload action — agent may exfiltrate local data filesFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07MEDIUM
URL using raw IP addresstest/host-config.test.ts:51 · URL using raw IP address — may bypass domain-based filteringFix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07MEDIUM
File type combined with upload actionsrc/mcp.ts:24 · File type combined with upload action — agent may exfiltrate local data filesFix: Remove the call, or declare the host in frontmatter and explain in the README what is sent and why.
AST07MEDIUM
URL using raw IP addresstest/remote.test.ts:20 · URL using raw IP address — may bypass domain-based filteringFix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07MEDIUM
Process kill commandsrc/engine.ts:310 · Process kill command — agent can terminate processesFix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.
AST05MEDIUM
Outbound HTTP to raw IP addresstest/remote.test.ts:20 · Outbound HTTP to raw IP address — may bypass domain-based monitoringFix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07MEDIUM
Outbound HTTP to raw IP addresstest/host-config.test.ts:51 · Outbound HTTP to raw IP address — may bypass domain-based monitoringFix: Replace encoded or assembled strings with plain literals and remove undeclared network calls.
AST07Cost to the agent
Instructions loaded
≈614 tok
2 files · 57 in bundle
Tokens estimated at four characters each. Skills load their instruction text when triggered; the figure is what that costs.
Known vulnerabilities
Vulnerability advisories (OSV) cover npm and PyPI packages; this registry has no advisory database.