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Security audit

X402 Monetize

Security checks for vulnerabilities and agentic risk

Overview

The skill's goal is coherent, but it asks users to run an unreviewed external Node.js server that exposes paid, always-on API endpoints.

Review this carefully before installing. Only run it if you have independently inspected `/home/workspace/MoneyMachine/x402_server/index.js`, verified its dependencies and payment recipient configuration, and are comfortable exposing a long-running paid API service from your environment.

Vulnerability Patterns
  • 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
  • Embedded Malicious CodeShips malicious scripts inside the skill and executes them locally
Findings (1)

T09 · Insecure Skill Coding Practices

Warning
Location
SKILL.md:22
Finding

Execution of Unverified Code Outside the Skill Package

Content
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Remediation
View remediation
Vulnerability Patterns
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • 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