Introduction
Nexus-Catalyst is a cross-platform AI memory system that gives your AI assistants persistent context. Instead of losing everything when you switch between Cursor, Claude Code, or Claude Desktop, Nexus-Catalyst remembers decisions and brings relevant context to every conversation.
The Problem We Solve
Section titled “The Problem We Solve”- Context loss — each chat starts from zero
- Scattered knowledge — solutions trapped in individual sessions
- Repetitive explanations — re-explaining project context every time
- Platform silos — Cursor doesn’t know what you discussed in ChatGPT
How It Works
Section titled “How It Works”1. Unified memory
Section titled “1. Unified memory”Conversations and decisions are stored in a central memory store. Ask about a topic in Cursor; answers can draw on what you discussed weeks ago in another client.
2. Automatic recall
Section titled “2. Automatic recall”Before responding, connected clients call recall_context to load relevant memories — prior decisions, project context, and technical solutions.
3. Personas
Section titled “3. Personas”Specialized AI personalities (Jack, Betty, Ed, Nora, and others) tune responses for architecture, design, product, and docs. The system suggests a persona via persona_hint when appropriate.
4. MCP-native
Section titled “4. MCP-native”Built on Model Context Protocol — works inside the AI tools you already use:
- Cursor — MCP server + rule plugin
- Claude Code — MCP server + session hooks
- Claude Desktop — MCP connector
- ChatGPT — MCP connector
- Antigravity — MCP server + session hooks
- Codex CLI — MCP server + recall rule
- Grok — MCP connector; CLI via rule + stop hook
- Perplexity — MCP connector
MCP Tools (today)
Section titled “MCP Tools (today)”| Tool | Purpose |
|---|---|
recall_context |
Session-start memory search |
store_context |
Save session decisions |
search_memories |
Mid-session search |
get_memory_detail |
Full memory content |
get_persona_definition |
Load a persona |
update_user_facts |
Update the durable user facts document |
integration_query |
Read Linear issues, projects, teams, labels, comments |
integration_mutate |
Create or modify Linear issues, projects, labels, comments |
See the MCP Tools Reference.
Getting Started
Section titled “Getting Started”- Quick Start — store and recall your first memory (~5 min)
- Cursor Setup — for Cursor users
- Claude Code Setup — for Claude Code users
- Agent instruction set — paste into Cursor rules or Claude Code so memory runs automatically
Next: Quick Start Guide →