Second Brain
Your knowledge, readable by AI.
Everything you save in Glassy — bookmarks, notes, voice memos, documents, and Obsidian vault files — becomes a searchable corpus. Query it from Claude, Cursor, Windsurf, OpenCode, Hermes, Openclaw, Pi, or any MCP-compatible agent. Your data stays on your server.
How it fits together.
Save
The Companion extension captures pages in one keystroke. Notes and voice memos land in the workspace. Obsidian vault files sync in the background.
Index
Everything is embedded and indexed automatically. BM25 full-text search plus vector semantic search via Reciprocal Rank Fusion.
Query
Ask Claude, Cursor, Windsurf, OpenCode, or any MCP-compatible agent what you know about a topic. The MCP server searches your actual corpus and returns real results with citations.
Screenshot: Knowledge Base workspace
Hybrid search
Keyword matching (BM25 via FTS5) plus meaning-based vector search, merged with Reciprocal Rank Fusion. Find the exact phrase or the related concept you forgot the words for.
MCP server
Built on the official @modelcontextprotocol/sdk v2.
Fifteen tools, three prompts, six resources. Stateless transport. DNS-rebinding protection.
Knowledge Base workspace
A dedicated #/kb view in your dashboard.
Browse indexed content, filter by source type, and see corpus health at a glance.
Obsidian proxy
One MCP connection covers both Glassy-native content and your Obsidian vault. No separate Obsidian MCP server to install, configure, or troubleshoot.
Tier-based rate limits
Free users get 120 queries per hour. Pro users get 1,200. The server is real infrastructure, not a demo — honest limits keep it sustainable for everyone.
Companion KB search
Search your knowledge base from the extension popup. Source filters, relevance scores, and debounced hybrid search — without opening the main app.
Does this train AI models?
No. Your corpus stays on your server. Queries route through your own MCP endpoint. The only thing leaving your machine is the specific query you send to your AI assistant.
Do I need to be a developer?
No. Generate an MCP key in Settings, copy the config snippet for Claude, Cursor, Windsurf, OpenCode, or any MCP-compatible client, paste it in. The extension shows the live server URL. That is the whole setup.
What if I don't use Obsidian?
Second Brain works with Glassy-native bookmarks, notes, and documents alone. Obsidian is an optional layer, not a requirement.