@ranklint/core

The ranklint engine: types, crawler, check runner, seo.config loader (c12 + zod), report diff and storages. No Nuxt or Playwright dependencies — page loading is abstracted behind the PageFetcher interface.

import { defineRanklintConfig } from '@ranklint/core'

export default defineRanklintConfig({
  site: { url: 'https://example.com' },
  rules: { 'meta:title-length': ['error', { min: 30, max: 60 }] },
})

Full documentation: ranklint.dev. MIT.