Machine Payments Protocol Tester

• Outcome: Review
• Latest audit: Jun 10, 2026 at 5:23 AM UTC
• Version:
  1.0.0

Overview

This payment skill appears intended to spend real USDC, but its mainnet payment path is not warned or scoped clearly enough.

Install only if you intentionally want an agent to help make USDC payments. Use devnet/testnet by default, require manual confirmation before any mainnet transaction, use a dedicated wallet with limited funds, and avoid autonomous mainnet execution until the skill documents clear spend caps and irreversibility warnings.

SkillSpector

By NVIDIA

Vulnerability Patterns

• Prompt Injection: Instruction Override, Hidden Instructions, Exfiltration Commands
• Data Exfiltration: External Transmission, Env Variable Harvesting, File System Enumeration
• Privilege Escalation: Excessive Permissions, Sudo/Root Execution, Credential Access
• Supply Chain: Unpinned Dependencies, External Script Fetching, Obfuscated Code
• Excessive Agency: Unrestricted Tool Access, Autonomous Decision Making, Scope Creep

Findings (1)

Missing User Warnings

Medium

• Confidence: 93% confidence
• Finding: The skill facilitates a real mainnet USDC payment but does not present a strong, prominent warning at the point of use that real funds will be spent. In an agent setting, this can lead to accidental financial loss if a user or automated system defaults to mainnet-beta or executes the flow without understanding that it triggers an irreversible on-chain payment.

VirusTotal

65/65 vendors flagged this skill as clean.