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Security audit

Content Opportunity Decisions

Security checks for vulnerabilities and agentic risk

Overview

This skill is a disclosed workflow for using SignalDig's MCP service to make SEO content decisions, with no local executable code or hidden persistence.

Install only if you intend to use SignalDig's remote MCP service for SEO decision reports. Use a user-level configuration, keep the API key out of repositories and chat, prefer environment variables or a secret store, and review your client's MCP settings permissions before enabling the server.

A.I.G

Vulnerability Patterns
  • 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
  • Unauthorized Access and Privilege EscalationObtains permissions beyond the task's legitimate needs

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)

Missing User Warnings

Medium
Confidence
92% confidence
Finding
The guide tells users of 'Other clients' to add the server with their real API key, but unlike the Codex section it does not clearly require use of an environment variable or warn that many client settings files may store headers in plaintext. This can lead to credential exposure through local config files, backups, screenshots, or accidental repository inclusion, especially because the skill is specifically about connecting a remote MCP service that requires bearer authentication.

Static analysis

No suspicious patterns detected.