Search API and SEO Glossary
Definitions for key terms in search APIs, web scraping, AI agents, and structured data. Updated for 2026.
SERP API
A SERP API is a programmatic interface that fetches search engine results pages and returns them as ...
Web Scraping vs Search API
Web scraping extracts data from websites by parsing HTML, while a search API provides structured res...
Model Context Protocol (MCP)
Model Context Protocol (MCP) is an open standard that defines how large language models discover and...
Retrieval-Augmented Generation (RAG)
Retrieval-Augmented Generation (RAG) is an AI architecture that enhances large language model output...
AI Agent Tool Calling
Tool calling is the mechanism by which an AI agent instructs a large language model to invoke an ext...
Google AI Overviews
Google AI Overviews are AI-generated summaries that appear at the top of Google search results, synt...
People Also Ask (PAA)
People Also Ask (PAA) is a Google SERP feature that displays a list of related questions with expand...
Knowledge Graph API
A Knowledge Graph API provides programmatic access to structured entity data, such as the informatio...
Structured Search Results
Structured search results are search engine results that have been parsed and organized into a machi...
Web Crawling vs Web Scraping
Web crawling is the process of systematically browsing and indexing web pages by following links, wh...
API Rate Limiting
API rate limiting is a mechanism that restricts the number of requests a client can make to an API w...
Proxy Rotation for Scraping
Proxy rotation is a technique where web scraping requests are routed through a pool of different IP ...
Headless Browser Scraping
Headless browser scraping uses a browser engine without a graphical interface, such as Puppeteer or ...
CAPTCHA Solving vs API
CAPTCHA solving involves using automated services or human workers to bypass challenge-response test...
Featured Snippet
A featured snippet is a highlighted answer box that appears at the top of Google search results, ext...
SERP (Search Engine Results Page)
A SERP (Search Engine Results Page) is the page returned by a search engine in response to a query, ...
ASIN (Amazon Standard Identification Number)
An ASIN (Amazon Standard Identification Number) is a unique 10-character alphanumeric identifier ass...
Buy Box (Amazon)
The Buy Box is the prominent 'Add to Cart' section on an Amazon product page, awarded to one seller ...
Google Shopping / Product Listing Ads
Google Shopping results, also known as Product Listing Ads (PLAs), are visual product advertisements...
JSON-LD Structured Data
JSON-LD (JavaScript Object Notation for Linked Data) is a method of encoding structured data using J...
Search Intent Classification
Search intent classification is the process of categorizing a search query by the user's underlying ...
Function Calling (LLM)
Function calling is a capability of large language models that allows them to generate structured JS...
Agent Orchestration Framework
An agent orchestration framework is a software library that manages the lifecycle, communication, an...
Semantic Search vs Keyword Search
Keyword search matches documents containing the exact terms in a query, while semantic search uses v...
Credit-Based API Pricing
Credit-based API pricing is a billing model where API consumers purchase a pool of credits that are ...
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