Keyword Difficulty (KD) API for SEO Research
Measure how difficult a keyword is to rank for and inspect the SERP evidence behind the score.
Get the KD score, update time, organic results, AI Overview references, questions, and SEO metrics in one request.
The current credit cost comes from the active API configuration. Failed requests do not consume credits.
With the current configuration, each successful request costs 3 credits.
Estimated Cost: 3 credit(s)
Understand ranking difficulty and the SERP
Use a stable response designed for SEO products and automated research.
Keyword Difficulty score
Read the Keyword Difficulty (KD) score for the requested keyword.
Organic results
Inspect normalized titles, URLs, positions, Domain Rating, URL Rating, traffic, and keyword metrics.
AI Overview
Detect AI Overview content and its cited sources when present in the SERP.
Related questions
Collect People Also Ask questions returned for the keyword.
Freshness metadata
Use country, source, and lastUpdate to understand the result context.
Safe normalized JSON
Receive stable public fields without internal signatures or tagged values.
Keyword Difficulty API FAQ
Common questions about KD data, billing, and requests.
Add Keyword Difficulty to your SEO workflow
Read the documentation, test a keyword, and integrate normalized KD and SERP data.