Summary
adaptco-main/A2A_MCP v2026-03-18 was classified as CRITICAL RISK with a risk score of 14510. Sigil detected 1709 findings across 6552 files, covering phases including provenance, network exfiltration, credential access, code patterns, obfuscation, install hooks. Review the findings below before installing this package.
Package description: A Model Context Protocol for Agent-to-Agent Relays
v2026-03-18
20 March 2026, 11:49 UTC
by Sigil Bot
Risk Score
14510
Findings
1709
Files Scanned
6552
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/skills/azure-deploy/references/sdk/azd-deployment.md:8
## Install
curl -fsSL https://aka.ms/install-azd.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/skills/azure-prepare/references/sdk/azd-deployment.md:8
## Install
curl -fsSL https://aka.ms/install-azd.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/worktrees/github-public-submission-merge/skills/azure-deploy/references/sdk/azd-deployment.md:8
## Install
curl -fsSL https://aka.ms/install-azd.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/worktrees/github-public-submission-merge/skills/azure-prepare/references/sdk/azd-deployment.md:8
## Install
curl -fsSL https://aka.ms/install-azd.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/worktrees/github-public-submission-merge/tools/nanobanana/package.json:18
"preflight": "npm run clean && npm ci && npm run format && npm run lint || true && npm run build && npm run typecheck",
"postinstall": "npm run install-deps && npm run build"
},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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