Retrieval Kit.
2 · UnderstandFind the right context before your model answers. Better context means more accurate answers, fewer hallucinations and smaller, cheaper prompts. The Retrieval Kit gives your product the search and ranking layer behind every good AI answer.
34 APIs in this kitAPIs in the Retrieval Kit
34 servicesReadability Scores API
Analyze plain text for readability metrics, reading time, and language-specific scores for English or German content.
SERP Rank Checker API
Get ranked search results for a keyword with language and location filters. Useful for SEO research, rank tracking, and competitor analysis.
Advanced Website Similarity Analysis API
Compare website URLs and get similarity scores, SEO scores, summaries, and suggested improvements for each site. Useful for overlap checks and audits.
Webpage Technical Performance Audit API
Audit a webpage URL and get canonical, robots.txt, SSL status, performance_score, issues, and overall_score for technical SEO checks.
Extract Structured Data API
Extract schema metadata from a URL, including schema count, breadcrumbs, organization flags, and structured data objects for SEO checks.
Security Header Full Audit API
Check a URL for CSP, HSTS, and X-Frame-Options, with a score and fix recommendations for missing security headers.
Technical Comparison of Webpages API
Compare two or more website URLs and get technical SEO signals for each page, including metadata, headings, links, images, SSL, mobile, and load time.
Security Headers Audit API
Check a webpage URL for common security headers and get an overall score. Returns booleans for CSP, HSTS, referrer policy, X-Frame-Options, and more.
Full Site Audit API
Audit a webpage by URL and get SEO metadata, tech stack, performance metrics, broken links, security headers, and mobile-friendly status.
Detect Tech Stack API
Detect the technologies used by a webpage from a URL. Returns the source URL and a list of detected technologies for audits and research.
Validate Schema API
Check a webpage’s structured data and metadata from a URL. Returns JSON-LD, microdata, Open Graph, Twitter card, and SEO summary fields.
Validate HTML API
Validate raw HTML for structured data and get JSON-LD, microdata, meta tags, Open Graph, Twitter card, and a validation summary.
Which Retrieval API do you need?
The question you arrived with, and the API that answers it.
What is the Retrieval Kit?
The Retrieval Kit is the layer that decides what your model sees. It compares, ranks and tags content so the most relevant information reaches the prompt.
It powers the features users notice most: search that understands intent, answers grounded in your own data, and routing that sends each request to the right place.
How AI products use it
- Rank the most relevant documents before your model writes an answer.
- Tag incoming tickets by keyword and language to route them.
- Find similar records to suggest matches or remove duplicates.
Why not build it in-house?
Each capability in the Retrieval Kit looks simple to build. The hard part is keeping it accurate, available and up to date once your product depends on it.
- Similarity and rankingGood ranking needs embedding models, scoring logic and evaluation sets. Changing any of them can silently make answers worse.
- Keyword extractionExtraction has to handle domain jargon, multiple languages and noisy text, and it needs tuning every time your content changes.
- Language detectionShort texts, mixed languages and similar languages trip up detectors. Wrong detection sends content to the wrong model or team.
- Running it at scaleRetrieval runs on every query. Latency and compute costs grow with your users, so it needs capacity planning and monitoring.
Do you run an API that belongs in the Retrieval Kit?
Publish it on ApyHub and put it in front of the teams and AI agents building with the Retrieval Kit. Your API joins the catalog under one subscription, becomes callable through MCP, and earns from every call.
Questions about the Retrieval Kit
What is the ApyHub Retrieval Kit?
The Retrieval Kit is the layer that decides what your model sees. It compares, ranks and tags content so the most relevant information reaches the prompt.
What is a semantic search API?
A semantic search API finds content by meaning rather than exact words. It compares a query with your documents and ranks them by how closely they match.
How do I rank documents for RAG?
Send the user's question and your candidate passages to Compare and Rank Text Similarity. It returns each candidate with a similarity score, so you pass only the most relevant passages to your model.
What is a keyword extraction API used for?
Keyword extraction pulls the main terms out of a text. AI products use it to tag content, route support tickets, build search filters and summarize what a document is about.
Can the Retrieval Kit detect the language of a text?
Yes. Language Detection and AI Text Language Detection identify the language of a text, so you can route multilingual content to the right model or team.
Can I test Retrieval Kit APIs before integrating them?
Yes. Every API has a Try it panel on its service page. Your key is filled in, you send a real request and see the actual response in your browser before you write any code.
Can AI agents use the Retrieval Kit?
Yes. Every endpoint is MCP-ready. Connect ApyHub MCP to Claude, ChatGPT, Cursor, Mistral Le Chat or any MCP-compatible agent, and your agent can discover and call these APIs directly.
How is it priced?
Every kit sits under one subscription, paid in atoms, ApyHub's usage unit. Every call shows its cost, and the free Starter plan needs no card.