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Security audit

Polymarket 1.0.0

Security checks for vulnerabilities and agentic risk

Overview

This skill is a read-only Polymarket lookup helper that fetches public market data and does not show evidence of trading, credential use, persistence, or hidden behavior.

Installers should understand that using this skill sends search terms and lookup requests to Polymarket's public Gamma API and may install/use the Python requests package. It does not implement wallet authentication or trading, but a future version should ideally declare outbound network scope explicitly.

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
  • MCP Least PrivilegeUnderdeclared Capability, Wildcard Permission, Missing Permission Declaration
  • 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
Findings (1)

Lp3

Medium
Category
MCP Least Privilege
Confidence
95% confidence
Finding
The skill invokes a Python script that queries an external API, so it has network capability, but the manifest does not declare any tool scope such as permissions or allowed-tools. This is a real security hygiene issue because undeclared network access reduces transparency and weakens policy enforcement, even though the documented behavior is read-only and limited to public Polymarket data.

Static analysis

No suspicious patterns detected.