Compute readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, ARI, Coleman-Liau, Gunning Fog, SMOG)

Compute readability scores for English text (Flesch Reading Ease, Flesch-Kincaid Grade, ARI, Coleman-Liau, Gunning Fog, SMOG). Returns all indices plus complexity stats and reading-level interpretation. Use ?text=Your+text+here. Built for AI agents auditing content clarity and grade-level fit.