Summary
steve228uk/metro-mcp v2026-03-29 was classified as CRITICAL RISK with a risk score of 853. Sigil detected 49 findings across 56 files, covering phases including provenance, install hooks, code patterns, network exfiltration. Review the findings below before installing this package.
Package description: A plugin-based MCP server for React Native runtime debugging, inspection, and automation. Connects to Metro bundler via Chrome DevTools Protocol — no app code changes needed for most features.
v2026-03-29
29 March 2026, 12:35 UTC
by Sigil Bot
Risk Score
853
Findings
49
Files Scanned
56
Provenance
Findings by Phase
Phase Ordering
Phases are ordered by criticality, with the most dangerous at the top. Click any phase header to expand or collapse its findings. Critical phases are expanded by default.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
repo/docs/plugins.md:15
async setup(ctx) {
// Access CDP connectionWhy was this flagged?
This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
repo/src/plugins/deeplink.ts:9
async setup(ctx) {
async function detectPlatform(): Promise<'ios' | 'android' | null> {Why was this flagged?
This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
repo/src/plugins/simulator.ts:9
async setup(ctx) {
async function detectPlatform(): Promise<'ios' | 'android' | null> {Why was this flagged?
This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.
install-pip-setup-exec
CRITICALsetup.py executes code at install time
repo/src/plugins/ui-interact.ts:15
async setup(ctx) {
async function detectPlatform(): Promise<'ios' | 'android' | null> {Why was this flagged?
This setup.py calls subprocess, os.system, exec, or eval during package installation. Legitimate packages rarely need to execute arbitrary commands at install time. This pattern is commonly used by malicious packages to download and run payloads, exfiltrate environment variables, or establish persistence. Rated CRITICAL because it runs with the installer's full permissions.
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