What is the key difference between Cathedral — Persistent Memory for AI Agents and MemoryRouter?

Cathedral — Persistent Memory for AI Agents belongs to the Knowledge & Memory category with local stdio execution, while MemoryRouter belongs to the Knowledge & Memory category with cloud HTTP/SSE execution.

How do I install Cathedral — Persistent Memory for AI Agents or MemoryRouter 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 Cathedral — Persistent Memory for AI Agents and MemoryRouter free or paid?

Cathedral — Persistent Memory for AI Agents operates under a Free / Open Source model (No auth required). MemoryRouter operates under a Free / Open Source model (No auth required).

Which MCP server has more tools and community activity?

Cathedral — Persistent Memory for AI Agents lists 0 tools with 0 views and 0 GitHub stars. MemoryRouter lists 0 tools with 1 views and 0 GitHub stars.

Can I use both Cathedral — Persistent Memory for AI Agents and MemoryRouter 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.

What is the main functional difference between Cathedral — Persistent Memory for AI Agents and MemoryRouter?

Cathedral — Persistent Memory for AI Agents is categorized under Knowledge & Memory and uses a local stdio subprocess . In contrast, MemoryRouter belongs to Knowledge & Memory using remote streaming HTTP/SSE transport . Select Cathedral — Persistent Memory for AI Agents when you need capabilities focused on knowledge & memory and MemoryRouter when you require tools for knowledge & memory .

How do I install Cathedral — Persistent Memory for AI Agents or MemoryRouter 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 Cathedral — Persistent Memory for AI Agents and MemoryRouter free to use, or do they require API keys?

Cathedral — Persistent Memory for AI Agents is listed under a Free / Open Source model with No auth required . MemoryRouter 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 Cathedral — Persistent Memory for AI Agents and MemoryRouter at the same time in my AI client?

Yes! MCP clients support multi-server orchestration. You can include both cathedral-persistent-memory-for-ai-agents and memoryrouter 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, Cathedral — Persistent Memory for AI Agents has a Quality Score of 27 /100 ( Emerging ) with 0 views, 0 installs, and 0 GitHub stars. MemoryRouter holds a Quality Score of 42 /100 ( Fair ) with 1 views, 0 installs, and 0 GitHub stars.

Cathedral — Persisten… vs MemoryRouter

Cathedral — Persisten… vs MemoryRouter | AllMCPs

Feature & Specification Comparison

Specification	C Cathedral — Persistent Memory for AI Agents Knowledge & Memory	M MemoryRouter Knowledge & Memory
Summary	Persistent memory and drift detection for AI agents across session restarts.	Persistent AI memory shared across Claude, ChatGPT, coding agents, and compatible MCP clients.
Category & Scope	Knowledge & Memory	Knowledge & Memory
Quality signal	27/100 (Emerging)	42/100 (Fair)
Transport Protocol	Local Subprocess (stdio)	Remote HTTP/SSE
Auth Requirement	No auth required	No auth required
Pricing Model	Free / Open Source	Free / Open Source
Required Env Vars	None required	None required
Compatible Clients	Claude DesktopCursorWindsurfClineVS Code	Claude DesktopCursorWindsurfClineVS Code
Install path signal	`npx · low`	`Remote (HTTP/SSE) · medium`
Engagement & Health	0 views 0 copies 0 upvotes	1 views 0 copies 0 upvotes
Verified / Official	Community Listing	Community Listing
Open full listing	View Cathedral — Persistent Memory for AI Agents Listing	View MemoryRouter Listing

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).

Cathedral — Persistent Memory for AI Agents Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "cathedral-persistent-memory-for-ai-agents": {
      "command": "npx",
      "args": [
        "-y",
        "cathedral-persistent-memory-for-ai-agents"
      ]
    }
  }
}

MemoryRouter Configuration

mcpServers (Claude Desktop / Cursor)

{
  "mcpServers": {
    "memoryrouter": {
      "url": "https://memoryrouter.ai"
    }
  }
}

Cathedral — Persistent Memory for AI Agents vs MemoryRouter

At a Glance & Executive Verdict

Which MCP Server Should You Choose?

Choose Cathedral — Persistent Memory for AI Agents when:

Choose MemoryRouter when:

Feature & Specification Comparison

Tools & Capabilities Breakdown

Cathedral — Persistent Memory for AI Agents Tools (0)

MemoryRouter Tools (0)

Ready-to-Paste Client Configurations

Frequently Asked Questions

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