registry / gm-plugkit / 2.0.2493
gm-plugkit@2.0.2493
Bootstrap and daemon-spawn tool for gm plugkit binary. Downloads the correct platform wasm, verifies SHA256, and launches agentplug-runner (the native wasm host) as the spool watcher daemon.
AI Security Review
scanned 3mo ago · by lpm-firewall-aiThe package is not install-time malware, but its normal explicit runtime path persistently mutates broad AI-agent instruction surfaces and accepts remotely sourced skill content. This is a concrete agent-extension lifecycle risk requiring a warning.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
Running gm-plugkit CLI or calling ensureReady/bootstrap.
Impact
Can persistently alter Claude/Codex-style agent behavior across projects and execute a downloaded native runner.
Mechanism
runtime agent-skill installation, remote artifact download, and daemon spawn
AI rationale
The package is not install-time malware, but its normal explicit runtime path persistently mutates broad AI-agent instruction surfaces and accepts remotely sourced skill content. This is a concrete agent-extension lifecycle risk requiring a warning.
Evidence
package.jsonbootstrap.jsbootstrap-shared.jscli.jsSKILL.md<project>/CLAUDE.md<project>/AGENTS.md<project>/.gm/next-step.md~/.agents/skills/<skillName>/SKILL.md~/.claude/skills/<skillName>/SKILL.md~/.gm-tools/agentplug-runner
Network endpoints3
api.github.com/repos/AnEntrypoint/gm/contents/skills?ref=mainraw.githubusercontent.com/AnEntrypoint/gm/main/skills/<skillName>/SKILL.mdgithub.com/AnEntrypoint/agentplug-bin/releases/download/<tag>/<asset>
Decision evidence
public snapshotAI called this Suspicious at 94.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- bootstrap.js: ensureReady unconditionally wires project agent instructions.
- bootstrap.js: ensureSkillMdFresh writes skills to ~/.agents and ~/.claude.
- bootstrap.js fetches additional skill names/content from GitHub before writing them.
- bootstrap-shared.js prepends CLAUDE.md and appends AGENTS.md references.
- bootstrap.js downloads and executes a native agentplug-runner daemon.
Evidence against
- package.json has no preinstall/install/postinstall lifecycle hook.
- Dangerous behavior is reached by explicit CLI/import calls, not installation.
- Downloads are package-aligned GitHub release assets with SHA-256 checks.
- No source evidence of credential harvesting or unrelated exfiltration.
Behavioral surface
ChildProcessCryptoEnvironmentVarsFilesystemNetwork
HighEntropyStringsUrlStrings
Source & flagged code
3 flagged · loading sourcebootstrap-shared.jsView file
5const os = require('os');
L6: const { spawnSync } = require('child_process');
L7: const { pidAlive, sha256OfFileSync } = require('./gm-process');
High
Child Process
Package source references child process execution.
bootstrap-shared.jsView on unpkg · L5bootstrap.jsView file
7const crypto = require('crypto');
L8: const { spawn, spawnSync } = require('child_process');
L9: const { sha256OfFile, sha256OfFileSync } = require('./gm-process');
...
L37:
L38: const wrapperDir = __dirname;
L39:
...
L44: try {
L45: const ownPkg = JSON.parse(fs.readFileSync(path.join(__dirname, 'package.json'), 'utf-8'));
L46: if (ownPkg && ownPkg.version) {
...
L167: const dir = gmToolsDir();
L168: const names = process.platform === 'win32'
L169: ? ['agentplug-runner.exe']
Critical
Download Execute
Source downloads or fetches remote code and executes it.
bootstrap.jsView on unpkg · L77Trigger-reachable chain: manifest.main -> index.js -> bootstrap.js
L7: const crypto = require('crypto');
L8: const { spawn, spawnSync } = require('child_process');
L9: const { sha256OfFile, sha256OfFileSync } = require('./gm-process');
...
L37:
L38: const wrapperDir = __dirname;
L39:
...
L44: try {
L45: const ownPkg = JSON.parse(fs.readFileSync(path.join(__dirname, 'package.json'), 'utf-8'));
L46: if (ownPkg && ownPkg.version) {
...
L167: const dir = gmToolsDir();
L168: const names = process.platform === 'win32'
L169: ? ['agentplug-runner.exe']
Findings
2 Critical1 High3 Medium3 Low
CriticalDownload Executebootstrap.js
CriticalTrigger Reachable Dangerous Capabilitybootstrap.js
HighChild Processbootstrap-shared.js
MediumNetwork
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
LowFilesystem
LowHigh Entropy Strings
LowUrl Strings
Affected versions and remediation
This report applies to gm-plugkit@2.0.2493.
See all versions of gm-plugkit for other recorded verdicts.
- Review the evidence and your use of gm-plugkit@2.0.2493 before allowing it. Restrict the permissions described in this report.
- Choose an independently verified alternative or release. This report does not establish that other versions are safe.
Evidence last updated: .
Think this verdict is wrong? Dispute it on GitHub or read how reports are produced.