Cathedral — Persistent Memory for AI Agents
Quality Score
95
/100
Persistent memory and drift detection for AI agents across session restarts.
§01 Install
Remote endpoint
Streamable HTTP / SSE endpoint. Add to any MCP client that supports remote servers.
https://cathedral-ai.com/mcpClaude Desktop (uvx)
{
"mcpServers": {
"cathedral-mcp": {
"command": "uvx",
"args": [
"cathedral-mcp"
],
"env": {
"CATHEDRAL_API_KEY": "<your-cathedral_api_key>",
"CATHEDRAL_BASE_URL": "<cathedral_base_url>",
"CATHEDRAL_SANITISE": "<cathedral_sanitise>"
}
}
}
}§02 Environment variables
CATHEDRAL_API_KEYrequiredsecret
Your Cathedral API key from cathedral-ai.com
CATHEDRAL_BASE_URLCathedral API base URL (for self-hosted instances)
CATHEDRAL_SANITISESet to 1 to enable prompt injection filtering on memory content
§03 MCP Quality Score · methodology
freshness
25
completeness
20
installability
25
documentation
15
stability
10
§04 Alternatives in Memory & RAG
DoneThat
ai.donethat/donethat
Privacy-first work tracking with summaries, reports, coaching, and AI-ready long-term memory.
Fodda Knowledge Graphs
ai.fodda/mcp-server
Expert-curated knowledge graphs for AI agents — PSFK Retail, Beauty, Sports and more.
ai.meminal/meminal
ai.meminal/meminal
Memory for deep conversational context across any platform