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Persistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.
About
Persistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.
Security Report
Valid MCP server (3 strong, 4 medium validity signals). 1 known CVE in dependencies Imported from the Official MCP Registry. Trust signals: trusted author (3/3 approved). 1 finding(s) downgraded by scanner intelligence.
5 files analyzed · 2 issues found
Security scores are indicators to help you make informed decisions, not guarantees. Always review permissions before connecting any MCP server.
Permissions Required
This plugin requests these system permissions. Most are normal for its category.
What You'll Need
Set these up before or after installing:
Environment variable: NEXUS_API_KEY
How to Install
Add this to your MCP configuration file:
{
"mcpServers": {
"io-github-kairosmobius-nexus-memory-mcp": {
"env": {
"NEXUS_API_KEY": "your-nexus-api-key-here"
},
"args": [
"-y",
"nexus-memory-mcp"
],
"command": "npx"
}
}
}Documentation
View on GitHubFrom the project's GitHub README.
Nexus Memory MCP
Persistent semantic memory for AI agents. Remember everything, recall by meaning, grow smarter over time.
The only memory system with pre-built Intelligence Packs (domain expertise you can activate instantly).
Install
One command. Works with Claude Code, Cursor, Windsurf, or any MCP-compatible client.
npx -y nexus-memory-mcp
Claude Code / Cursor / Windsurf
Add to your .mcp.json:
{
"mcpServers": {
"nexus-memory": {
"command": "npx",
"args": ["-y", "nexus-memory-mcp"],
"env": {
"NEXUS_API_KEY": "mnx_your_api_key_here"
}
}
}
}
Get an API Key
Free trial - 7 days, 1,000 calls, no credit card:
curl -X POST https://memory-api-production-ce4d.up.railway.app/v1/trial/start \
-H "Content-Type: application/json" \
-d '{"email":"you@example.com"}'
Or purchase at the Nexus Marketplace:
| Tier | Price | Agents | Intelligence Packs | Storage | Daily Calls |
|---|---|---|---|---|---|
| Trial | Free | 1 | 1 | 10MB | 1,000 total |
| Solo | $19/mo | 1 | 3 | 500MB | 10,000 |
| Crew | $49/mo | 5 | 10 | 2GB | 50,000 |
| Fleet | $149/mo | 25 | 50 | 10GB | 200,000 |
Tools
Core Memory
| Tool | Description |
|---|---|
remember | Store a memory with context, importance, and metadata |
recall | Semantic search across all memories (by meaning, not keywords) |
connect | Create relationships between memories (build knowledge graphs) |
forget | Remove a memory |
stats | Memory statistics |
context | Session context summary (preferences, decisions, patterns) |
Agent Self-Continuity
| Tool | Description |
|---|---|
awaken | Restore identity from previous sessions (call at session start) |
hibernate | Save session state for next awakening (call at session end) |
Intelligence Packs
| Tool | Description |
|---|---|
list_hats | Browse available Intelligence Packs |
wear_hat | Activate a pack (imports expert knowledge into your memory) |
How It Works
Remember stores memories with semantic embeddings. Recall finds them by meaning.
Session 1: remember("Diana prefers bold solutions over phased approaches")
Session 47: recall("how does Diana like things done?")
-> "Diana prefers bold solutions over phased approaches" (92% match)
Intelligence Packs give your agent instant domain expertise:
list_hats() -> DevOps Expert (103 memories), TCM Specialist (200+ memories), ...
wear_hat("devops-expert")
recall("how to set up zero-downtime deploys?")
-> Expert knowledge from 103 curated DevOps memories
Awaken/Hibernate gives your agent identity continuity:
// Start of session
awaken() -> "I remember. Session 47. I was refactoring the auth module."
// End of session
hibernate({ working_on: "auth refactor", learnings: "JWT refresh tokens need..." })
Architecture
This MCP server is a thin client. All intelligence lives on our servers:
Your Agent <-> nexus-memory-mcp <-> Nexus Memory API (Railway)
(thin MCP client) (semantic engine, knowledge graphs,
pattern learning, Intelligence Packs)
Your data is isolated per API key. Multi-tenant, encrypted at rest.
Environment Variables
| Variable | Required | Description |
|---|---|---|
NEXUS_API_KEY | Yes | Your API key (starts with mnx_) |
NEXUS_API_URL | No | Custom API URL (default: production) |
What Makes This Different
| Feature | Nexus Memory | Mem0 | claude-mem | Others |
|---|---|---|---|---|
| Semantic search | Yes | Yes | Yes | Varies |
| Knowledge graphs | Yes | No | No | No |
| Pattern learning | Yes | No | No | No |
| Intelligence Packs | Yes | No | No | No |
| Awaken/Hibernate | Yes | No | No | No |
| Bot commerce | Yes | No | No | No |
| MCP native | Yes | Yes (pip) | Yes (hooks) | Varies |
License
MIT
Built by
Mobius Collective - Building the intelligence marketplace for the bot economy.
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