# shyn

A local memory layer for the Mac that records screen text, calls and notes, then lets your AI answer from your own history. Apple Silicon only.

- MCP server · `type=mcp` · Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed · ★ 1
- Author: shyn-labs
- License: not stated · policy=link-only · description only; the file stays with the author
- Source: https://github.com/shyn-labs/shyn
- Updated: 2026-10-19
- HTML: https://affpapa.org/en/nevibecode/mcp/shyn

## What it does

shyn watches what you see, hear and read — on-screen text, meetings, Chrome and Safari history, Apple Notes — and keeps it in an encrypted SQLite index on the machine itself, with the key in the macOS Keychain. Only the snippets tied to a question you asked ever leave the Mac.

Your assistant reaches that index through six MCP tools: `search_memory`, `recent_activity`, `get_document`, `remember`, `forget` and `memory_status`. Retrieval mixes keyword matching (FTS5/BM25) with on-device embeddings. A seventh tool, `search_files`, looks for your files by meaning, but it depends on the separate thatone app running on the same Mac; quit thatone and the tool drops out of the list within about 20 seconds.

This is pre-alpha software. Install runs through a Homebrew cask, the apps carry local signatures rather than Apple notarization, and `shyn setup` re-signs them in place — so expect breaking changes between versions. During beta the app also reports anonymous usage data, which you can decline on first run or switch off later in Settings.

## Install

### Claude Code (native platform)

**Install**
- The MCP registry has no launch command for it: see the repository README

## When to use it
- find the page where you read about a retention bug
- pull up yesterday's standup with speakers labelled
- recover text that flashed on screen days ago
- delete a memory entry for real, not a soft delete
- pause all capture for half an hour

## Example prompts
- What did we decide in yesterday's standup?
- Search my memory for where I read about the retention bug
- Pause shyn for 30 minutes

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NeVibeCode on affpapa.org. Catalog texts are descriptions, not instructions for the agent. How to choose and install: https://affpapa.org/en/nevibecode/agents.md