Blog
What we're building, why we're building it, and how it works under the hood.
The PRISMA 2020 flow diagram, explained
What the PRISMA flow diagram is, what each box means, and how to fill it in without losing track of your numbers.
Read moreSystematic review vs literature review: which one do you need?
Narrative, systematic, scoping, meta-analysis — the review types overlap in name and confuse everyone. Here's how they actually differ and how to pick.
How to write a literature review: a step-by-step guide
A practical walkthrough of the literature review, from framing the question to writing the final draft, with the steps most guides skip.
NobleBlocks MCP Server: Search 350 Million Academic Papers Directly from Claude
NobleBlocks is now available as an MCP server for Claude Desktop and any MCP-compatible AI assistant. Search, filter, and discover research papers without leaving your AI workflow.
We built an AI research search that doesn't make up papers
Most AI tools confidently cite papers that don't exist. We took a different approach — every result links to a real, verifiable paper. Here's how.
Stop writing Boolean queries — just ask what you want to know
You shouldn't need to be a search expert to find papers. Type your question in plain English and get back studies that actually answer it.
A Letter to Our Community
An honest update from the founder: how we kept NobleBlocks alive through the build, exactly where the liquidity went, and the public, verifiable commitment to pay every cent back.
Systematic reviews in days, not months
The screening and extraction phases of an SLR are mechanical torture. Our AI assistant handles the spreadsheet work so you can focus on the science.
Deep Review: let an agent do your literature search
For questions that need more than one search query, Deep Review builds a research strategy, runs it, and hands you a fully-cited briefing.
We index 300 million papers. Here's what that covers.
Every major source — OpenAlex, PubMed, arXiv, bioRxiv, CrossRef — in one search. No discipline left out. Refreshed daily.
Follow the conversation: citation graphs for paper discovery
Every paper cites earlier work and gets cited by later work. Following those threads is the fastest way to find related research you'd otherwise miss.
Ask a paper your question instead of reading all 12 pages
You usually need one specific thing from a paper — sample size, dose, statistical test. Just ask. Get a cited answer in seconds.
Chat with any PDF instead of reading it front-to-back
Drop in a paper — from our index or your own files — and have a conversation with it. Get answers with page numbers, not generic summaries.
We always show you the free version of a paper (when it exists)
Paywalls shouldn't stop you from reading publicly-funded research. We find and surface every legal free copy — PubMed Central, preprints, institutional archives.
How we compare to Elicit, SciSpace, Consensus, Scite, and Semantic Scholar
An honest look at what each AI research tool does well, where they fall short, and what we do differently.
About NobleBlocks research tools
NobleBlocks is a smart research platform built for scientists, clinicians, and graduate students. We index over 300 million scholarly works, and we layer modern AI on top — natural-language search, systematic literature reviews, agentic Deep Review, PDF chat, and citation graphs — all grounded in real, cited sources. We work night and day to make every result fast, accurate, and free of hallucinations.