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Memory Nexus Mcp

kairosmobius/memory-nexus-mcp

A semantic memory layer that persists across Claude sessions using embeddings and knowledge graphs. The MCP server exposes tools for storing memories with context (remember), semantic search by meaning rather than keywords (recall), and relationship mapping between concepts (connect). The standout feature is Intelligence Packs, which are pre-built memory collections for specific domains like DevOps or Traditional Chinese Medicine that you can activate instantly to give your agent domain expertise. It also includes awaken and hibernate tools that let agents resume work across sessions with full context of what they were doing. Requires an API key and runs as a cloud service rather than locally.

tools: 9
transport: STDIO
env var: 1
last updated: Feb 11, 2026

Tools

9 tools

Public tool metadata for what this MCP can expose to an agent.

rememberStore a memory with context, importance, and metadata

Store a memory with context, importance, and metadata

No parameter schema in public metadata yet.

recallSemantic search across all memories (by meaning, not keywords)

Semantic search across all memories (by meaning, not keywords)

No parameter schema in public metadata yet.

connectCreate relationships between memories (build knowledge graphs)

Create relationships between memories (build knowledge graphs)

No parameter schema in public metadata yet.

forgetRemove a memory

Remove a memory

No parameter schema in public metadata yet.

contextSession context summary (preferences, decisions, patterns)

Session context summary (preferences, decisions, patterns)

No parameter schema in public metadata yet.

awakenRestore identity from previous sessions (call at session start)

Restore identity from previous sessions (call at session start)

No parameter schema in public metadata yet.

hibernateSave session state for next awakening (call at session end)

Save session state for next awakening (call at session end)

No parameter schema in public metadata yet.

list_hatsBrowse available Intelligence Packs

Browse available Intelligence Packs

No parameter schema in public metadata yet.

wear_hatActivate a pack (imports expert knowledge into your memory)

Activate a pack (imports expert knowledge into your memory)

No parameter schema in public metadata yet.

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Configuration

NEXUS_API_KEY

API key for Memory Nexus

Readme

Memory Nexus 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 @memory-nexus/mcp

Claude Code / Cursor / Windsurf

Add to your .mcp.json:

{
  "mcpServers": {
    "memory-nexus": {
      "command": "npx",
      "args": ["-y", "@memory-nexus/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:

View the full README on GitHub

Details

Repository: github.com/kairosmobius/memory-nexus-mcp
Categories: AI & LLM Tools, Documents & Knowledge
Package: @memory-nexus/mcp
Transport: STDIO
Registry: MCP registry, active

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