Summary
quanticsoul4772/mcp-reasoning v2026-03-22 was classified as CRITICAL RISK with a risk score of 444. Sigil detected 20 findings across 264 files, covering phases including provenance, install hooks. Review the findings below before installing this package.
Package description: MCP server providing 15 structured reasoning tools via Anthropic Claude API
v2026-03-22
22 March 2026, 23:59 UTC
by Sigil Bot
Risk Score
444
Findings
20
Files Scanned
264
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-makefile-curl
HIGHMakefile/script pipes remote content to shell
repo/README.md:48
```bash
curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash
```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/README.md:113
```bash
curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/configure.sh | bash
```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/RELEASE_CHECKLIST.md:89
```bash
curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash
mcp-reasoning --versionWhy 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/RELEASE_CHECKLIST.md:104
```bash
curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash
mcp-reasoning --health # requires ANTHROPIC_API_KEYWhy 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/RELEASE_CHECKLIST.md:291
```bash
curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash
```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/configure.sh:45
echo "Install mcp-reasoning first:"
echo " curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash"
exit 1Why 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-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
repo/docs/design/INSTALLATION_IMPROVEMENTS.md:556
"scripts": {
"postinstall": "node install.js"
},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/docs/design/INSTALLATION_IMPROVEMENTS.md:31
# Step 1: Install Rust (if not installed)
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
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/docs/design/INSTALLATION_IMPROVEMENTS.md:317
# macOS/Linux
curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash
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/docs/guides/DEVELOPMENT.md:27
```bash
curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh
rustup updateWhy 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/homebrew/mcp-reasoning.rb:57
Or use the interactive configuration wizard:
Run: curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/configure.sh | bash
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/install.sh:3
# install.sh - One-command installation for macOS/Linux
# Usage: curl -fsSL https://raw.githubusercontent.com/quanticsoul4772/mcp-reasoning/main/install.sh | bash
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-npm-postinstall
CRITICALnpm lifecycle script — runs automatically on install
repo/npm/package.json:10
"scripts": {
"postinstall": "node install.js",
"test": "node bin/mcp-reasoning --version"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.
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