A knowledge base that argues back
Know when your reading disagrees with you.
Save what you read, write down what you believe, and Noeis checks one against the other. It quotes every passage for or against a view you hold, tells you when a new source pushes back, and grows a wiki that cites its sources and shows where they disagree.
How it works
Hold a view, and let your reading test it.
Write what you believe in one sentence. Noeis reads what you have already saved against it, and everything you save after, and quotes each passage for or against. Nothing is filed until you say so.
Hear when a new source pushes back.
When something you save argues with a view you hold, Noeis names the source and quotes it the next time you open it. You decide whether it counts.
A wiki that shows where sources disagree.
Pages are built from your articles, highlights and notes, and cite them. Where two sources disagree, the page says so and asks which you believe.
Ask, and get your own reading back.
Questions are answered from your library with the quote. When your reading has nothing on it, Noeis says so instead of guessing. Connect Claude Code, Codex and other agents, read-only unless you grant more.
Start from a shared wiki
Read a public wiki, then make it yours.
Each of these wikis is open to read. Add to my library copies its pages into your own wiki and saves every public source it cites into your Library, where your reading keeps growing it. The owner's private highlights and notes stay with them.
Mental Models
A shareable mini-wiki for first principles, opportunity cost, inversion, and related judgment tools.
Behavioral Economics
A starter graph for loss aversion, anchoring, base rates, and decision-making under bias.
How to Think About AI
A starter graph for agents, evals, context windows, scaling laws, and capability tradeoffs.
Value Investing
A starter graph for intrinsic value, moats, owner earnings, capital allocation, and margin of safety.
Guides
AI Second Brain
What the term should mean in practice, what to evaluate, and where Noeis fits.
Second Brain App
How to compare categories of tools when you need retrieval, connected notes, and synthesis.
AI Note-Taking Workflow
How to move from saved source material to writing, planning, and reusable insight.
Personal Knowledge Management AI
How to use AI in a PKM system without creating more clutter than clarity.
Most Note Apps Solve Capture, Not Recall
Why note-taking software feels productive at capture time but still fails when you need retrieval, synthesis, and recall.
Readwise Is Not a Second Brain
Why Readwise is useful for resurfacing highlights but still does not solve the full problem of recall, concept formation, and synthesis.
How Serious Readers Turn Highlights Into Concepts
A practical workflow for moving from saved passages to clearer concepts, reusable notes, and stronger drafts.
AI for Reading Without Losing Judgment
How to use AI while reading and synthesizing without outsourcing the actual judgment that makes the work valuable.
Best Second Brain App for Founders
What founders should actually optimize for when choosing a second brain app, and why most tools over-index on capture instead of recall and synthesis.
Best Second Brain App for Researchers
A practical guide to choosing a second brain app for research-heavy workflows where source traceability, comparison, and synthesis matter more than capture volume.
Source-Backed Synthesis Workflow
A practical workflow for turning saved reading, highlights, and notes into synthesis that stays traceable to source material.
Import Reading Archive into Noeis
A practical guide to moving a reading archive into Noeis as a proof layer for source-grounded synthesis and Readwise-adjacent workflows.
From Saved Article to Draft in Noeis
A practical source-grounded workflow for turning a saved article into an evidence-backed draft in Noeis.
Build a Wiki From Your Reading
How to turn saved articles and highlights into wiki pages where every claim points back to the passage that supports it.
Connect an AI Agent to Your Reading via MCP
How to connect Claude Code, Codex, or another MCP client to your saved reading and notes in Noeis, read-only by default and approved by you.
AI Answers Quoted From Your Own Sources
How Noeis answers questions from your saved reading with exact quotes, checks those quotes, and says so when your library has nothing on the question.