How do I install the nexus-memory-mcp MCP server?

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "nexus-memory-mcp": { "command": "npx", "args": ["-y", "nexus-memory-mcp"] } }

What does nexus-memory-mcp do?

Persistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.

Is the nexus-memory-mcp MCP server free to use?

Yes. nexus-memory-mcp is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

How do I install the nexus-memory-mcp MCP server?

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "nexus-memory-mcp": { "command": "npx", "args": ["-y", "nexus-memory-mcp"] } }

What does nexus-memory-mcp do?

Persistent semantic memory for AI agents with knowledge graphs and Intelligence Packs.

Is the nexus-memory-mcp MCP server free to use?

Yes. nexus-memory-mcp is listed on AllMCPs as a free, open Model Context Protocol server you can install into Claude Desktop, Cursor, or any MCP-compatible client.

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.

Terminal

npx -y nexus-memory-mcp

Claude Code / Cursor / Windsurf

Add to your .mcp.json:

config.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:

Terminal

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.

Code

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:

Code

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:

Code

// 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:

Code

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.

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.

Terminal

npx -y nexus-memory-mcp

Claude Code / Cursor / Windsurf

Add to your .mcp.json:

config.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:

Terminal

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.

Code

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:

Code

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:

Code

// 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:

Code

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.

Nexus Memory Mcp

Quick Install

Install Config Generator

Documentation Overview

Nexus Memory MCP

Install

Claude Code / Cursor / Windsurf

Get an API Key

Tools

Core Memory

Agent Self-Continuity

Intelligence Packs

How It Works

Architecture

Environment Variables

What Makes This Different

License

Built by

Related MCP Servers

Frequently Asked Questions about Nexus Memory Mcp

AllMCPs Directory Badge

Technical Specs & Signals

Moxie Docs MCP

Own this project?

Share & Embed

Explore more

Nexus Memory Mcp

Quick Install

Install Config Generator

Documentation Overview

Nexus Memory MCP

Install

Claude Code / Cursor / Windsurf

Get an API Key

Tools

Core Memory

Agent Self-Continuity

Intelligence Packs

How It Works

Architecture

Environment Variables

What Makes This Different

License

Built by

Related MCP Servers

Frequently Asked Questions about Nexus Memory Mcp

AllMCPs Directory Badge

Technical Specs & Signals

Moxie Docs MCP

Own this project?

Share & Embed

Explore more