bun
Verdict safe, but 2 findings (1 low, 1 info), mainly policy violation, command injection. Most recent scan 2026-05-09.
Second scanner: NVIDIA SkillSpector
The two scanners disagree: Cisco found nothing and SkillSpector says do not install. One of them has a blind spot here; read the skill before trusting either. How the two scanners compare across the whole corpus: Two scanners, one corpus.
What this skill does
Build fast applications with Bun JavaScript runtime. Use when creating Bun projects, using Bun APIs, bundling, testing, or optimizing Node.js alternatives. Triggers on Bun, Bun runtime, bun.sh, bunx, Bun serve, Bun test, JavaScript runtime.
- Package
- 1 file, 11 KB
- SKILL.md
- 1425 words, 12+ sections
- Code
- None. Instructions only.
SKILL.md covers: Bun - The Fast JavaScript Runtime · Quick Start · Install Bun (macOS, Linux, WSL) · Windows · Create new project · Run TypeScript directly (no build step!) · Install packages (faster than npm) · Run scripts · Package Management · Install dependencies · Remove packages · Update packages
Findings
LOW Dangerous data flow in command pipeline Command Injectionpipeline
Pipeline downloads data from the network and executes it: `curl -fsSL https://bun.sh/install | bash`. This is a remote code execution pattern. (Note: uses a well-known installer URL - likely a standard installation command.)
SKILL.md:2
curl -fsSL https://bun.sh/install | bashINFO Skill does not specify a license Policy Violationstatic
Skill manifest does not include a 'license' field. Specifying a license helps users understand usage terms.
SKILL.md
What is in the package
| File | Kind | Size |
|---|---|---|
SKILL.md | doc | 11 KB |
External hosts referenced
bun.sh github.com registry.npmjs.org
Hostnames that appear in the skill's files. Referencing a host is not a finding; compare against the findings above and the skill's stated purpose.
Environment variables referenced
API_KEY
Package contents recorded 2026-10-22 at commit f7a43d8f8525. The scan above ran against the version current at scan time; the two can differ if the skill has since been updated.
What we checked
- Static analyzer. Pattern rules over SKILL.md and bundled files: known-bad commands, exfiltration URLs, secrets, obfuscation.
- Bytecode analyzer.
- Pipeline analyzer.
- Behavioral analyzer. Checks what the skill asks the agent to do against what its description claims it does.
- Trigger analyzer. Looks for instructions that fire on conditions the user did not ask for.
What we did not check
- Runtime behaviour. The skill was not executed; findings come from reading its files.
- Anything fetched at install or run time, including remote scripts, package dependencies, and URLs the skill tells the agent to open.
- Content the analyzers cannot read: images, binaries, and some non-English text.
- Known scanner bypass classes. See the methodology and limitations page.
Sources
- Repository: https://github.com/hoodini/ai-agents-skills
- Raw scan result: skills-bun-scan.json
- Badge for your README:
- Request a re-scan