What is the key difference between UltraMemory and Collective Memory?

UltraMemory belongs to the Knowledge & Memory category with local stdio execution, while Collective Memory belongs to the Knowledge & Memory category with local stdio execution.

How do I install UltraMemory or Collective Memory in Claude Desktop or Cursor?

Copy the mcpServers JSON configuration snippet provided on this page into your claude_desktop_config.json or ~/.cursor/mcp.json file and restart your AI client.

Are UltraMemory and Collective Memory free or paid?

UltraMemory operates under a Free / Open Source model (No auth required). Collective Memory operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

UltraMemory lists 0 tools with 0 views and 0 GitHub stars. Collective Memory lists 0 tools with 0 views and 0 GitHub stars.

Can I use both UltraMemory and Collective Memory together in the same MCP host?

Yes! MCP hosts like Claude Desktop, Cursor, Windsurf, Cline, and VS Code support configuring multiple servers under the mcpServers object simultaneously.

How do I install UltraMemory or Collective Memory in Claude Desktop, Cursor, or Windsurf?

Both servers follow the standard Model Context Protocol configuration format. Simply copy the JSON block from the configuration section above and paste it into your AI client's mcpServers configuration object (for instance in claude_desktop_config.json or ~/.cursor/mcp.json ), then completely restart or refresh the application.

Are UltraMemory and Collective Memory free to use, or do they require API keys?

UltraMemory is listed under a Free / Open Source model with No auth required . Collective Memory operates under a Free / Open Source model with No auth required . If environment variables are required (such as API keys), be sure to define them under the env key in your MCP client's configuration file.

Can I run both UltraMemory and Collective Memory at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both ultramemory and collective-memory as distinct keys inside the single mcpServers object in your configuration file. Your AI assistant will automatically select and call the appropriate tool from either server during chat sessions.

Which MCP server has higher directory engagement and quality ratings?

On AllMCPs, UltraMemory has a Quality Score of 27 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars. Collective Memory holds a Quality Score of 39 /100 ( Fair ) with 0 views, 0 installs, and 0 GitHub stars.

Side-by-Side Model Context Protocol Comparison

UltraMemory vs Collective Memory

In-depth architectural comparison of the UltraMemory and Collective Memory MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.

At a Glance & Executive Verdict

UltraMemory

Knowledge & Memory · Local stdio

Quality: 27/100 (Emerging) | Auth: No auth required

Collective Memory

Knowledge & Memory · Local stdio

Quality: 39/100 (Fair) | Auth: No auth required

Verdict Summary: Choose UltraMemory if you need specialized Knowledge & Memory tools running via a local process. Choose Collective Memory if your workspace requires Knowledge & Memory integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.

Which MCP Server Should You Choose?

Choose UltraMemory when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore UltraMemory Details

Choose Collective Memory when:

You need dedicated capabilities in the Knowledge & Memory domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).

Explore Collective Memory Details

Feature & Specification Comparison

Specification	U UltraMemory Knowledge & Memory	C Collective Memory Knowledge & Memory
Summary	Cross-tool memory for your AI that recalls first every turn and admits when it doesn't know.	MCP server for persistent, semantic memory across AI sessions
Category & Scope	Knowledge & Memory	Knowledge & Memory
Quality signal

Tools & Capabilities Breakdown

UltraMemory Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Collective Memory Tools (0)

No explicit tool names declared in metadata yet. Check project README on main listing page.

Ready-to-Paste Client Configurations

Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).

UltraMemory Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "ultramemory": {
      "command": "npx",
      "args": [
        "-y",
        "ultramemory"
      ]
    }
  }
}

Collective Memory Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "collective-memory": {
      "command": "npx",
      "args": [
        "collective-memory"
      ]
    }
  }
}

Frequently Asked Questions

UltraMemory is categorized under Knowledge & Memory and uses a local stdio subprocess. In contrast, Collective Memory belongs to Knowledge & Memory using local stdio subprocess. Select UltraMemory when you need capabilities focused on knowledge & memory and Collective Memory when you require tools for knowledge & memory.

More alternatives to UltraMemory More alternatives to Collective Memory Knowledge & Memory category hub Canonical compare URL