KiHustle Heading-Keyword Alignment Checker

Choose this endpoint when you need a lightweight, low-cost check on whether a set of article headings semantically supports a target SEO keyword — particularly useful for content creators, bloggers, and solo operators optimizing articles for search before publishing. Prefer it over full content auditing tools when you only need heading-level alignment rather than full-page SEO analysis.

• Missing keyword or headings field returns an error
• Empty headings array may return a generic processed response with no meaningful alignment signal
• Vague or very short keywords may produce low-confidence alignment results
• Non-English keywords or headings (despite German-language branding) may yield unreliable results
• Network or payment failures return HTTP 402 if payment is not completed