DLN.
LintFixer

Fix Linter Agent

Systematically resolves linting and code style violations across your Rails codebase. RuboCop, ERB Lint, Brakeman, and more—all cleaned up automatically.

The Linting Backlog

Linting warnings pile up. Nobody has time to fix them:

  • "1,247 offenses detected" — RuboCop output everyone ignores
  • "We'll fix it later" — later never comes
  • "Just disable the rule" — until the whole .rubocop.yml is exclusions
  • "The CI is yellow, not red" — warnings become invisible

Meanwhile, inconsistent code makes onboarding harder, security issues hide in the noise, and technical debt compounds.

How the Agent Works

1

Linter Discovery

Identifies which linters are configured in your project.

  • → Scans Gemfile, package.json, and CI configs
  • → Detects RuboCop, Standard, ERB Lint, Brakeman, ESLint, and more
2

Run All Linters

Executes each linter to get the full picture.

  • → Captures all violations with file locations and severity
  • → Categorizes: auto-fixable vs manual, style vs security
3

Auto-Fix First

Applies safe automatic fixes.

  • → rubocop -a for safe fixes, -A for all fixable
  • → ERB Lint autocorrect, Prettier formatting, ESLint fixes
4

Manual Fixes

Resolves violations that require human judgment.

  • → Method length: extracts private methods
  • → Class complexity: suggests refactoring patterns
  • → Security issues: applies proper fixes, not disables
5

Verify & Test

Ensures fixes don't break functionality.

  • → Re-runs all linters to confirm zero violations
  • → Runs test suite to catch regressions

Supported Linters & Tools

Rb

Ruby Linters

RuboCop, Standard Ruby, Syntax Tree, Reek, Flay, Flog

ERB

View Linters

ERB Lint, Herb, HTMLBeautifier

JS

JavaScript/CSS

ESLint, Prettier, StandardJS, Stylelint

Security Scanners

Brakeman, Bundler Audit

DB

Database Tools

Strong Migrations, Database Consistency

T

Type Checking

Sorbet, Steep (RBS)

What This Is NOT

  • ✗ Not just auto-fix. Manual violations get proper refactoring, not rule disables.
  • ✗ Not blind compliance. Understands why rules exist before applying fixes.
  • ✗ Not one-size-fits-all. Detects your project's specific linter configuration.
  • ✗ Not ignoring tests. Always runs the test suite to verify fixes don't break anything.

Clean Up Your Codebase

Stop ignoring linter warnings. Get a consistent, clean codebase that's easier to maintain and onboard new developers.

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