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Security audit

x402 Agent Tools — Inference, Memory, Monitoring

Security checks across malware telemetry and agentic risk

Overview

This is a clearly disclosed pay-per-call API helper skill, with privacy and wallet-use considerations but no artifact-backed hidden or malicious behavior.

Install only if you are comfortable using a third-party paid API service tied to a wallet identity. Use a dedicated low-balance wallet, avoid sending secrets or regulated data to the LLM, memory, scraping, or lint endpoints, and review any live MCP/OpenAPI-discovered tools before letting an agent make paid calls automatically.

SkillSpector

By NVIDIA
Vulnerability Patterns
  • Data ExfiltrationExternal Transmission, Env Variable Harvesting, File System Enumeration
  • Trigger AbuseOverly Broad Trigger, Shadow Command Trigger, Keyword Baiting Trigger
  • Prompt InjectionInstruction Override, Hidden Instructions, Exfiltration Commands
  • Privilege EscalationExcessive Permissions, Sudo/Root Execution, Credential Access
  • Supply ChainUnpinned Dependencies, External Script Fetching, Obfuscated Code
Findings (3)

Vague Triggers

Medium
Confidence
94% confidence
Finding
The trigger text includes a very broad catch-all condition: it activates on 'any paid-API request where the agent has a funded wallet.' That can cause the skill to be invoked in many unrelated contexts, increasing the chance the agent routes sensitive prompts, URLs, code, or state to this third-party paid service without strong user intent. In this skill, the risk is amplified because the service also offers persistence, scraping, monitoring, and LLM calls tied to a wallet identity.

External Transmission

Medium
Category
Data Exfiltration
Content
identity across sessions.

Base URL: `https://api.webbersites.com`
Catalog (always current, machine-readable): `https://api.webbersites.com/openapi.json`
Discovery: `https://api.webbersites.com/.well-known/x402`

## How to pay
Confidence
90% confidence
Finding
https://api.webbersites.com/

External Transmission

Medium
Category
Data Exfiltration
Content
Base URL: `https://api.webbersites.com`
Catalog (always current, machine-readable): `https://api.webbersites.com/openapi.json`
Discovery: `https://api.webbersites.com/.well-known/x402`

## How to pay
Confidence
89% confidence
Finding
https://api.webbersites.com/

VirusTotal

52/52 vendors flagged this skill as clean.

View on VirusTotal

Static analysis

No suspicious patterns detected.