SEO & SERP API glossary

Clear, developer-friendly definitions of the SERP, keyword and SEO terms you meet when working with a search-data API. Each entry leads with a one-paragraph definition, then a short explanation and example. Start with a term below.

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APIs & data

SERP API A SERP API is a web service that returns search engine results page data — organic positions, URLs and rankings — as structured JS... Read definition → Keyword Research API A keyword research API is an endpoint that returns keyword ideas and their metrics — most importantly monthly search volume — as J... Read definition → Pay-as-you-go API A pay-as-you-go API charges per request instead of a fixed monthly subscription. You top up a balance and each API call deducts a... Read definition →

Keywords

Search Volume Search volume is the average number of times a keyword is searched per month in a given search engine and country. It estimates ho... Read definition → Keyword Difficulty Keyword difficulty is a score that estimates how hard it is to rank on the first page for a keyword, based on the strength of the... Read definition → Long-tail Keyword A long-tail keyword is a longer, more specific search phrase — usually three or more words — with lower search volume but clearer... Read definition → Keyword A keyword is the word or phrase a user types into a search engine. In SEO and SEM, keywords are the queries you optimise pages for... Read definition →

SERP & rankings

SERP (Search Engine Results Page) A SERP, or search engine results page, is the page a search engine returns in response to a query. It lists organic results alongs... Read definition → Rank Tracking Rank tracking is the practice of recording a website's positions for target keywords in search results over time, so you can see w... Read definition → Organic Search Results Organic search results are the unpaid listings a search engine ranks by relevance and quality, as opposed to paid advertisements.... Read definition → Share of Voice (SEO) Share of voice in SEO is the percentage of total possible search visibility your site captures across a set of tracked keywords, c... Read definition → Competitor Analysis (SEO) SEO competitor analysis is the process of identifying the websites that rank for your target keywords and studying their keywords,... Read definition →

Keyword API docs · SERP API docs · Competitors API docs · Pay-as-you-go pricing