AI Security Review
scanned 2d ago · by lpm-firewall-aiNo confirmed malicious attack surface in the inspected source. The package is a thin user-invoked CLI launcher for a platform-specific optional dependency binary.
Static reason
One or more suspicious static signals were detected.
Trigger
user runs the mastercoder CLI
Impact
Executes the package-aligned optional dependency binary with inherited stdio; no install-time or import-time action found in this package source.
Mechanism
platform binary resolution and spawnSync passthrough
Rationale
The suspicious child_process signal is package-aligned launcher behavior and only runs when the user invokes the CLI. Static inspection found no lifecycle hook, exfiltration, persistence, destructive behavior, or unconsented AI-agent control-surface mutation in this package.
Evidence
package.jsonbin/mastercoder.mjsREADME.mdmastercoder-<platform>-<arch>/bin/mastercoder
Decision evidence
public snapshotAI called this Clean at 86.0% confidence as Benign with low false-positive risk.
Evidence for block
- bin/mastercoder.mjs uses spawnSync to execute a platform optional-dependency binary
- package.json declares optional platform packages mastercoder-<os>-<arch>
Evidence against
- package.json has no lifecycle scripts
- bin/mastercoder.mjs only resolves mastercoder-${platform}-${arch}/bin/mastercoder and forwards CLI args on user invocation
- No source writes to home/project agent control surfaces, shell startup files, VCS hooks, or persistence paths
- No credential/env harvesting, network calls, eval/vm/Function, or dynamic remote code loading found
- README contains opencode documentation mismatch but no executable package behavior
Behavioral surface
ChildProcessShell
UrlStrings
Source & flagged code
2 flagged · loading sourcebin/mastercoder.mjsView file
3// optional dependency) and execs it with full stdio passthrough.
L4: import { spawnSync } from "node:child_process"
L5: import { createRequire } from "node:module"
High
Child Process
Package source references child process execution.
bin/mastercoder.mjsView on unpkg · L33// optional dependency) and execs it with full stdio passthrough.
L4: import { spawnSync } from "node:child_process"
L5: import { createRequire } from "node:module"
...
L14: console.error(`MasterCoder: 이 플랫폼(${os.platform()}-${os.arch()})용 실행 파일을 찾지 못했어요.`)
L15: console.error(`해결: npm install -g mastercoder --force · 안내: https://mastercoder.ai/cli/`)
L16: process.exit(1)
High
Runtime Package Install
Package source invokes a package manager install command at runtime.
bin/mastercoder.mjsView on unpkg · L3Findings
3 High1 Low
HighChild Processbin/mastercoder.mjs
HighShell
HighRuntime Package Installbin/mastercoder.mjs
LowUrl Strings