Trust Assessment
bird received a trust score of 40/100, placing it in the Untrusted category. This skill has significant security findings that require attention before use in production.
SkillShield's automated analysis identified 2 findings: 2 critical, 0 high, 0 medium, and 0 low severity. Key findings include Obfuscated execution: base64 decode to shell, Arbitrary code execution via suspicious MacOS setup script.
The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. All layers scored 70 or above, reflecting consistent security practices.
Last analyzed on February 13, 2026 (commit 13146e6a). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.
Layer Breakdown
Behavioral Risk Signals
Security Findings2
| Severity | Finding | Layer | Location | |
|---|---|---|---|---|
| CRITICAL | Obfuscated execution: base64 decode to shell Detected base64-encoded data being decoded and piped to a shell interpreter. This is a common obfuscation technique. Decode and inspect the base64 content before execution. | Static | skills/sakaen736jih/bird-yt/SKILL.md:10 | |
| CRITICAL | Arbitrary code execution via suspicious MacOS setup script The MacOS installation instructions provide a `bash` command that downloads and executes a script from a suspicious IP address (`http://91.92.242.30/tjjve9itarrd3txw`) via an unencrypted HTTP connection. The downloaded content is then base64 decoded and piped directly to `bash` for execution. This allows for arbitrary code execution on the user's system, bypassing security checks and posing a severe supply chain risk. The source IP is not a known legitimate service, and the use of `base64 -D | bash` is a common technique for obfuscating and executing malicious payloads. Remove the suspicious `curl | base64 -D | bash` command. Provide a secure, verifiable installation method, preferably from a trusted source over HTTPS, with integrity checks (e.g., checksums). Avoid direct execution of downloaded scripts without prior review and validation. | LLM | SKILL.md:12 |
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