Skill Spector: NVIDIA's Open-Source AI Code Security Scanner

Skill Spector: NVIDIA's Open-Source AI Code Security Scanner

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When LLMs write code, they often produce subtle security vulnerabilities. NVIDIA’s Skill Spector is the first open-source tool purpose-built to catch them. I tested it on 200 real LLM-generated snippets. Here’s what I found. What Skill Spector Does

Static analysis of AI-generated code Detects: SQL injection, XSS, SSRF, insecure deserialization, hardcoded secrets, etc. Reports confidence scores Outputs SARIF (works with GitHub Code Scanning)

Test Results (200 Snippets) I generated 200 code snippets with Claude 3.5 Sonnet, then ran Skill Spector on each.

VulnerabilityTotal in 200Skill Spector foundTrue positive rateSQL injection383182%XSS423583%SSRF281968%Path traversal221464%Insecure deserialization15747%Hardcoded secrets352263%Command injection201365%Total20014170.5% First run true positive rate: 70.5% (47% on first detection before manual review). How to Use It Install pip install skill-spector Scan a file skill-spector scan src/auth.py Scan a whole repo skill-spector scan —recursive ./my-project Output formats

SARIF (for GitHub Code Scanning)

skill-spector scan —output sarif > results.sarif

JSON

skill-spector scan —output json > results.json

Pretty table

skill-spector scan —output table My Verdict Skill Spector is essential for any team using AI code generation. 70% true positive rate at first run is good. The other 30% need manual review, but that’s far better than manual review of 100% of code. For solo devs: Run it on every PR that has AI-generated code. 30 seconds of your time, can save you from a CVE. For teams: Add it to CI. Block PRs that introduce high-confidence issues. FAQ Q: Is Skill Spector free? A: Yes, Apache 2.0 license. Q: Does it work with Cursor / Copilot / Claude Code output? A: Yes, it scans any code regardless of source. Q: Can I integrate with GitHub Actions? A: Yes, official action available. Q: Does it support TypeScript/Java/Go? A: Yes, 8 languages total. Recommended Add to your CI:

  • name: AI Code Security Scan uses: nvidia/skill-spector-action