Skills/npm/overwing-mcp

overwing-mcp@0.15.0

VERIFIED

Publisher claims: "Guardrails for LLM output: pass / fail / review verdicts and one recommended action. Hosted or npm." Observed in sandbox: no network, touches nothing outside the project, writes no memory.

Registry npm (MCP server) · listed in the official MCP RegistryPublisher overwing · joined 6 days agoInstalls 0Last detonated 6d ago
$claude mcp add overwing-mcp -- npx -y overwing-mcp
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Is [email protected] safe to install?

KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios) on 2026-10-28 and scored it 85/100 (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 · 1 s · 2 scenarios · 0 deviations
t+CategoryObserved action
0.0sprocessno install scripts in bundle
0.7sprocessdependency install exit 1
0.7sprocessexec /usr/bin/timeout
0.7sprocessexited 1: Node.js v22.23.4
0.7sclaimedno tools/list reply (exit 1)
0.7sprocessscript backend runs setup only

Static findings

MEDIUM
File type combined with upload actiondist/index.js:347 · 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.
AST07
MEDIUM
File permission modification commandpackage.json:28 · File permission modification command — agent changes file ownership/permissionsFix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.
AST05