Overview
AI research vault for local Markdown: capture sources, audit AI work, save research packs, and export context.
Cortex turns every page you save into clean markdown on your disk — categorized, cross-linked, and graphed by AI. Built for people who want a real second brain, not another bookmarking app. — What you get — • ONE-CLICK CAPTURE Save any page or selection with ⌘⇧S / ⌘⇧E, the toolbar icon, or a right-click. Mozilla Readability strips the chrome and Turndown produces clean markdown with frontmatter (title, source URL, capture time, tags). • A REAL FOLDER ON DISK You pick the vault folder. Every capture lands as a plain .md file. Open it in Obsidian, VS Code, anything. There is no proprietary database — uninstall the extension and your notes are still there. • AI ORGANIZE New captures land in inbox/ and Cortex AI tags them, categorizes them, and cross-links them to existing entities and concepts in your vault. Auto or Manual mode — you stay in control. • IN-EXTENSION WIKI + KNOWLEDGE GRAPH Browse and edit your vault from the side panel. Click [[wikilinks]] to navigate. A Cytoscape-rendered force-directed graph shows how every note connects. • ASK YOUR VAULT Type a question. Cortex retrieves the most relevant notes (semantic + lexical), feeds them to the model, and answers with [[wikilink]] citations back to the source notes. • AUTO-RESEARCH Type a topic and Cortex dispatches a web research agent (Perplexity Sonar), gathers and dedupes citations, extracts entities, and writes a fully-linked note with inline cites. • INGEST FROM YOUR EXISTING SOURCES PDFs, DOCX, Markdown/HTML files, Google Drive documents, Gmail threads, and YouTube transcripts can all be turned into source notes in your vault. — Pricing — • Free — 25 AI credits / month. Quick capture and Ask are included. • Plus — $9/month or $90/year. 1,000 AI credits, document/Drive/Gmail ingest, web research, AI link validation. • Pro — $19/month or $190/year. 5,000 AI credits, deep multi-step research, graph investigate, smart-merge audit. You only ever pay for AI usage. The vault, capture, search, and graph are free forever. — Privacy posture — • Vault content stays on YOUR disk. Cortex does not host or sync your notes. • Page content is sent to Cortex AI only when you trigger an AI action that needs it. • The backend stores usage metadata (feature, model, credits, tokens) for billing, NOT your captured content. • No third-party trackers, no analytics, no telemetry. • Cortex uses activeTab + scripting (not <all_urls>) so it cannot see a page until you click capture. Manage your account at https://cortexmd.ai/account
Details
- Version0.1.10
- UpdatedMay 11, 2026
- FeaturesOffers in-app purchases
- Offered byCortex.md
- Size1.42MiB
- LanguagesEnglish
- Developer
Email
ingenatic@gmail.com - Non-traderThis developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.
Privacy
Cortex.md has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.
Cortex.md handles the following:
This developer declares that your data is
- Not being sold to third parties, outside of the approved use cases
- Not being used or transferred for purposes that are unrelated to the item's core functionality
- Not being used or transferred to determine creditworthiness or for lending purposes
