email

Warn

Audited by Snyk on Mar 14, 2026

Risk Level: MEDIUM
Full Analysis

MEDIUM W011: Third-party content exposure detected (indirect prompt injection risk).

  • Third-party content exposure detected (high risk: 0.90). The skill’s SKILL.md shows runtime calls to the public stableemail.dev API (e.g., /api/inbox/messages and /api/inbox/messages/read) and instructs the agent to list and read inbox messages, which are untrusted, user-generated third-party email content that could contain instructions influencing subsequent actions.

MEDIUM W012: Unverifiable external dependency detected (runtime URL that controls agent).

  • Potentially malicious external URL detected (high risk: 0.80). The skill explicitly requires running "npx agentcash@latest fetch" at runtime, which fetches and executes remote npm package code (agentcash) to interact with https://stableemail.dev, so the npx/agentcash runtime dependency can execute remote code and is therefore a risk.

MEDIUM W009: Direct money access capability detected (payment gateways, crypto, banking).

  • Direct money access detected (high risk: 1.00). The skill exposes explicit purchase/payment endpoints (e.g., /api/inbox/buy, /api/subdomain/buy, /api/inbox/topup) with listed prices and workflow steps to buy/top-up services. It requires wallet setup, uses SIWX wallet authentication and the npx agentcash@latest fetch tool, and even mentions on-chain USDC refunds — all indicating the skill performs on-chain or wallet-backed payment transactions. These are specific financial operations (sending payments/topping up and managing paid resources), not generic HTTP or automation capabilities.

Issues (3)

W011
MEDIUM

Third-party content exposure detected (indirect prompt injection risk).

W012
MEDIUM

Unverifiable external dependency detected (runtime URL that controls agent).

W009
MEDIUM

Direct money access capability detected (payment gateways, crypto, banking).

Audit Metadata
Risk Level
MEDIUM
Analyzed
Mar 14, 2026, 04:48 PM
Issues
3