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Security audit

Polymarket Data Api

Security checks for vulnerabilities and agentic risk

Overview

This skill coherently provides a small command-line helper for reading public Polymarket market data and does not request credentials, persistence, or destructive authority.

Install only if you are comfortable with the skill making outbound requests to Polymarket's public API when you run its commands. It does not require authentication or handle private account data, but users who need strict network allowlisting may want explicit permission metadata added.

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 (2)

Lp3

Medium
Category
MCP Least Privilege
Confidence
88% confidence
Finding
The skill advertises and demonstrates network-capable behavior via a Python script that queries a public API, but it does not declare any explicit tool scope such as permissions or allowed-tools. This weakens least-privilege controls and makes the skill's runtime capabilities ambiguous, which can enable unintended outbound requests or make review and enforcement harder.

Natural-Language Policy Violations

Medium
Confidence
91% confidence
Finding
The manifest uses Chinese-only natural-language metadata in the name and description fields, which can impose a specific language on users without opt-in. There is no indication that the skill is region-specific or that alternative locales are supported.

Static analysis

No suspicious patterns detected.