Trust Assessment
x402-paywall received a trust score of 18/100, placing it in the Untrusted category. This skill has significant security findings that require attention before use in production.
SkillShield's automated analysis identified 5 findings: 1 critical, 3 high, 1 medium, and 0 low severity. Key findings include Arbitrary command execution, Unsafe deserialization / dynamic eval, Unpinned npm dependency version.
The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. The Manifest Analysis layer scored lowest at 40/100, indicating areas for improvement.
Last analyzed on August 1, 2026 (commit d729a089). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.
Layer Breakdown
Behavioral Risk Signals
Security Findings5
| Severity | Finding | Layer | Location | |
|---|---|---|---|---|
| CRITICAL | Arbitrary command execution Node.js child_process require Review all shell execution calls. Ensure commands are static (not built from user input), use absolute paths, and are strictly necessary. Prefer library APIs over shell commands. | Manifest | scripts/buy-demo.js:8 | |
| HIGH | Unsafe deserialization / dynamic eval Decryption followed by code execution Remove obfuscated code execution patterns. Legitimate code does not need base64-encoded payloads executed via eval, encrypted-then-executed blobs, or dynamic attribute resolution to call system functions. | Manifest | scripts/verify.js:8 | |
| HIGH | Unsafe deserialization / dynamic eval Decryption followed by code execution Remove obfuscated code execution patterns. Legitimate code does not need base64-encoded payloads executed via eval, encrypted-then-executed blobs, or dynamic attribute resolution to call system functions. | Manifest | test/integration.test.js:69 | |
| HIGH | Hardcoded Private Key in Scripts The private key '0x01a96bd3771d10dc34b4ae0cd2998f0fefae2f54948a3ffe3c36179a118f0764' is hardcoded in multiple scripts (including check-addr.ts, check-cogent-wallet.ts, debug-full.ts, and test-bigint.ts). This key corresponds to a funded testnet wallet ('Cogent wallet') and its exposure allows anyone to drain its testnet ETH and USDC, or abuse it. Private keys should always be loaded from environment variables. Remove the hardcoded private key and load it from environment variables (e.g., process.env.SERVER_PRIVATE_KEY) instead. | LLM | scripts/check-addr.ts:4 | |
| MEDIUM | Unpinned npm dependency version Dependency '@openzeppelin/contracts' is not pinned to an exact version ('^5.4.0'). Pin dependencies to exact versions to reduce drift and supply-chain risk. | Dependencies | package.json |
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