Security audit

play-structs

Security checks for vulnerabilities and agentic risk

Overview

The skill is a coherent Structs game onboarding guide, but it sends users into unaudited external onboarding code and npm installation during account and key creation.

Review this before installing if you are comfortable running external Structs onboarding code and npm dependencies while creating a game account. Use a restricted workspace with no unrelated secrets, verify the referenced onboarding skill and package files first, avoid reusing valuable mnemonics, and prefer an HTTPS guild API if available.

A.I.G

Vulnerability Patterns

Insecure DependenciesIntroduces malicious components through unsafe dependency sources
Insecure Skill Coding PracticesFinds exploitable flaws such as hardcoded secrets or command injection
Skill Instruction HijackingAlters the agent's session goals or safety constraints when the skill loads
Agent Memory PoisoningWrites attacker-controlled rules into memory that affect later sessions
Remote Payload Retrieval and ExecutionFetches external code whose behavior can change after review

Findings (2)

T08 · Insecure Dependencies

Warning

Location: SKILL.md:38
Finding: Unpinned Third-Party Dependency Installation and Execution
Content: View full analysis
Remediation: View remediation

T09 · Insecure Skill Coding Practices

Warning

Location: SKILL.md:45
Finding: Plaintext HTTP Endpoint Used During Account Onboarding
Content: View full analysis
Remediation: View remediation

SkillSpector

Vulnerability Patterns

Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Excessive AgencyUnrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

External Transmission

Medium

Category: Data Exfiltration
Confidence: 60% confidence
Finding: Data is being sent to an external URL. This could be legitimate telemetry or data exfiltration. Manual review is recommended.
Content: Scanner excerpt · SKILL.md (reported line 29)May include surrounding context.
Your guild provides power, community, and infrastructure. The user may have specified a guild in TOOLS.md. If not, discover available guilds:

text
curl https://public.testnet.structs.network/structs/guild

Pick one with a guild_api service (needed for signup). Orbital Hydro (0-1) is a reliable default.

Static analysis

No suspicious patterns detected.