Agent skill
ubs-scanner
Bug scanning with UBS (Ultimate Bug Scanner). Use before commits, when scanning for bugs, when the user mentions "ubs", "bugs", "scan", or "code quality".
Install this agent skill to your Project
npx add-skill https://github.com/majiayu000/claude-skill-registry/tree/main/skills/development/ubs-scanner
SKILL.md
UBS (Ultimate Bug Scanner)
Scans for 1000+ bug patterns across multiple languages.
When This Applies
| Signal | Action |
|---|---|
| Before committing | ubs --staged |
| Scanning changes | ubs --diff |
| Scanning specific file | ubs path/to/file |
| CI integration | ubs --ci |
Pre-Commit (Required)
Run before every commit:
ubs --staged # Scan staged changes
ubs --staged --fail-on-warning # Strict mode (exit 1 on any issue)
Fix all issues before committing. Rerun until clean.
Scanning Options
# Scan current directory
ubs .
# Scan specific file
ubs path/to/file.ts
# Scan working tree changes vs HEAD
ubs --diff
# Verbose with code examples
ubs -v .
Profiles
# Strict (fail on warnings) - for production code
ubs --profile=strict .
# Loose (skip nits) - for prototyping
ubs --profile=loose .
Language Filters
# Single language
ubs --only=python .
# Multiple languages
ubs --only=typescript,javascript .
Supported languages:
- javascript, typescript
- python
- c, c++
- rust, go
- java, ruby
Output Formats
ubs . --format=json # JSON
ubs . --format=jsonl # Line-delimited JSON
ubs . --format=sarif # GitHub Code Scanning
CI Integration
ubs --ci # CI mode
ubs --comparison baseline.json . # Regression detection
Suppressing False Positives
Add to the line:
// ubs:ignore
const result = eval(userInput); // ubs:ignore
Health Check
ubs doctor
ubs doctor --fix
Quick Reference
ubs --staged # Pre-commit scan (required)
ubs --staged --fail-on-warning # Strict pre-commit
ubs --diff # Working tree changes
ubs path/to/file # Specific file
ubs --profile=strict . # Production mode
ubs doctor --fix # Health check
Workflow Integration
The standard pre-commit workflow:
# 1. Run tests
npm test # or pytest, etc.
# 2. Scan staged changes
ubs --staged
# 3. Fix any issues found
# 4. Re-run until clean
ubs --staged
# 5. Commit
git add -A && git commit
Anti-Patterns
| Don't | Why |
|---|---|
Skip ubs --staged |
Bugs slip into commits |
| Ignore warnings | May be real issues |
Over-suppress with // ubs:ignore |
Defeats the purpose |
See Also
verification/— Full pre-commit checklistbead-workflow/— Bead close workflow includes UBS
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