Summary
ExpertVagabond/universal-blockchain-mcp v2026-03-22 was classified as CRITICAL RISK with a risk score of 184. Sigil detected 14 findings across 64 files, covering phases including provenance, obfuscation, install hooks. Review the findings below before installing this package.
Package description: Model Context Protocol server for ZetaChain CLI - enables AI assistants to interact with ZetaChain blockchain development tools
v2026-03-22
23 March 2026, 11:53 UTC
by Sigil Bot
Risk Score
184
Findings
14
Files Scanned
64
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-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
repo/package.json:18
"prepare": "npm run build",
"postinstall": "npm run install-zetachain && npm run install-foundry",
"install-zetachain": "npm install -g zetachain@latest --yes --silent || echo 'ZetaChain CLI installation failed, but MCP will work with npx'",Why was this flagged?
npm lifecycle scripts like postinstall run automatically during package installation with no user interaction required. This is the #1 attack vector for malicious npm packages — attackers embed data theft or backdoor installation in these hooks. Rated CRITICAL because code executes before the developer can review it.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/package.json:20
"install-zetachain": "npm install -g zetachain@latest --yes --silent || echo 'ZetaChain CLI installation failed, but MCP will work with npx'",
"install-foundry": "curl -L https://foundry.paradigm.xyz | bash -s -- -y && foundryup || echo 'Foundry installation failed, but ZetaChain development will work with Hardhat'",
"publish:npm": "npm publish --access public",Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
install-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/src/smithery.ts:90
console.log('🔧 Installing Foundry toolkit...');
execSync('curl -L https://foundry.paradigm.xyz | bash -s -- -y', { stdio: 'inherit' });
execSync('foundryup', { stdio: 'inherit' });Why was this flagged?
A script or Makefile pipes content from a remote URL directly into a shell (curl | sh or wget | bash). This is inherently dangerous because the remote content can change at any time, and the command runs with the current user's permissions. Rated HIGH because it requires manual execution (unlike install hooks) but still executes arbitrary remote code.
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