Connect the dots of your digital life
Transform scattered notes, bookmarks, contacts, and media into a living knowledge network — then discover the people behind the information.
Built for Humans + AI Agents
Four Dimensions of Connection
Info ↔ Info
Link your notes, bookmarks, contacts, and media into a connected knowledge graph. See how everything relates — and discover insights you never expected.
People ↔ People
Discover like-minded people through shared interests, overlapping knowledge, and complementary expertise. Build meaningful connections beyond simple friend lists.
Info ↔ People
Find who has the information you need. Instead of exposing sensitive data, Link123 reveals relationship paths — so you can connect safely, offline, through people you trust.
Six Degrees, Verifiable
Reach anyone through trusted intermediaries. HMAC-signed referral chains carry your intent across hops — each step explicit, consented, and revocable. Real-world six-degrees-of-separation, made cryptographically verifiable.
Built for Your Digital Life
Connected Knowledge Graph
14 purpose-built entity types — notes, voice memos, contacts, bookmarks, locations, organizations, tags, articles, life events, attachments, and more — linked by rich relationships. Your information is no longer scattered; it's a living, searchable network.
MCP Agent Hub
Native Model Context Protocol server — let Claude, ChatGPT, Gemini, and other AI agents operate your knowledge graph on your behalf. 250+ tools across 110+ OAuth scopes, with second-factor approvals for sensitive operations. Your data, your agents, your rules.
Cross-language Everything
Search in any language, find results in every language. Content is automatically translated to your preferred language. Friends' shared content, public information — all accessible regardless of the original language.
Graph-Powered Discovery
10 recommendation algorithms powered by your knowledge graph — discover people through shared interests, trust paths, and community connections that no feed algorithm could surface.
Multilingual Secure Messaging
Private and group conversations with optional E2EE. Real-time translation lets everyone speak their native language — even in groups with hundreds of languages simultaneously.
Create & Publish
From idea to publication in one flow: write text or scripts, generate narration and subtitles, create illustrations, compose video — then publish to X with one tap. Subscribe to X accounts for AI-summarized inspiration. Every asset stays linked.
Privacy You Control
Choose your privacy level per entity: enable end-to-end encryption for zero-knowledge security, or keep data accessible for sharing, searching, and discovery. You decide.
What Makes Link123 Different
Not just another app. A new way to organize, connect, create, and discover — for humans and AI agents alike.
Everything Connected
14 entity types designed to capture every kind of information — and every relationship between them. Notes link to people, locations link to events, tags connect it all. From draft to published content, every asset is traceable.
No Language Barriers
Write in any language, search in any language, chat in any language. Content is automatically presented in your preferred language. Group chats support hundreds of languages simultaneously.
Escape the Information Cocoon
Algorithmic feeds trap you in echo chambers. Link123 connects ideas through tag intermediaries — when two topics share a tag, you discover unexpected adjacencies. Trending content surfaces across communities, not just within your bubble.
AI That Works for You
AI learns from every interaction — conversations, image recognition, document analysis, content summaries — automatically extracting key facts into your knowledge graph. MCP-native: external agents (Claude, ChatGPT, Gemini) can operate on your data with scoped consent. Never locked to one provider.
Ready to connect your digital life?
Link123 is available now. Start organizing your digital life today.