3a-factory@4.2.1
⚠ Under reviewEnterprise Feature-local Spec Package workflow for Claude, Gemini, and Cursor (3A-Factory)
AI Security Review
scanned 1mo ago · by lpm-firewall-aiThis is a real explicit-user agent configuration installer, not malicious install-time behavior. Its lifecycle guard prevents consumer-project mutation during npm installation, so a warning is appropriate rather than a block.
Static reason
High-risk behavior combination matched malicious policy.
Trigger
The user explicitly runs the 3a-factory CLI outside an npm lifecycle hook.
Impact
The installed instructions can influence future Claude, Gemini, or Cursor agent behavior in that project.
Mechanism
Project-local AI-agent configuration and workflow scaffolding.
AI rationale
This is a real explicit-user agent configuration installer, not malicious install-time behavior. Its lifecycle guard prevents consumer-project mutation during npm installation, so a warning is appropriate rather than a block.
Evidence
dist/install.jsAGENTS.md.agents/configs/subagents.json.agents/skills/<name>/SKILL.md.claude/skills/<name>/SKILL.md.claude/commands/<name>.md.gemini/commands/<name>.toml.cursor/rules/<name>.mdc
Decision evidence
public snapshotAI called this Suspicious at 94.0% confidence as Dangerous Capability with low false-positive risk.
Evidence for warning
- Explicit CLI execution writes shared agent instructions, skills, commands, and Cursor rules into the selected project.
- The installer can overwrite existing project files when the user supplies --force.
- The packaged templates include agent workflow and delegation controls, so this is an agent-configuration capability.
Evidence against
- The postinstall hook detects npm lifecycle execution and exits before scaffolding a consumer project.
- No network, credential collection, shell execution, remote payload loading, or self-dependency is present in the inspected runtime source.
- Normal writes avoid differing existing files unless the user explicitly supplies --force.
Behavioral surface
DynamicRequireEnvironmentVarsFilesystem
HighEntropyStrings
Source & flagged code
6 flagged · loading sourcepackage.jsonView file
•scripts.preinstall = node -e "const f=require('fs'),{execSync}=require('child_process');if(!f.existsSync('dist/install.js')&&f.existsSync('scripts/build.js'))execSync('node scripts/build.js',{stdio:'in...
Critical
Red Install Lifecycle Script
Install-time lifecycle script matches a deterministic static-gate block pattern.
package.jsonView on unpkg•scripts.postinstall = node dist/install.js
High
Install Time Lifecycle Scripts
Package defines install-time lifecycle scripts.
package.jsonView on unpkg•scripts.postinstall = node dist/install.js
Medium
Ambiguous Install Lifecycle Script
Install-time lifecycle script is not statically allowlisted and needs review.
package.jsonView on unpkgdist/install.jsView file
Findings
2 Critical1 High5 Medium4 Low
CriticalRed Install Lifecycle Scriptpackage.json
CriticalAi Agent Control Hijackdist/install.js
HighInstall Time Lifecycle Scriptspackage.json
MediumAmbiguous Install Lifecycle Scriptpackage.json
MediumDynamic Requiredist/install.js
MediumEnvironment Vars
MediumStructural Risk Force Deep Review
MediumAi Review Evidencedist/install.js
LowNon Install Lifecycle Scripts
LowScripts Present
LowFilesystem
LowHigh Entropy Strings
Affected versions and remediation
This report applies to 3a-factory@4.2.1.
See all versions of 3a-factory for other recorded verdicts.
- Review the evidence and your use of 3a-factory@4.2.1 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: .
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