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Cathedral — Persistent Memory for AI Agents

MCP server · PyPI · ★ 10 · graded 2026-10-23Source linked

Persistent memory and drift detection for AI agents across session restarts.

No outside reports on file

Cathedral — Persistent Memory for AI Agents is distributed via PyPI (cathedral-mcp); review its source code, dependencies, and requested permissions before use.

Based on public adoption and transparency signals as of Oct 23, 2026. Our opinion, not a code audit or security guarantee.

Was this verdict for Cathedral — Persistent Memory for AI Agents helpful?

What it can access

  • Local filesNo local folder access notedLOW
  • Command executionNo shell command runner notedLOW
  • Network reachLocal or standard API callsLOW
  • CredentialsNo API token requiredLOW
  • Package sourcePyPI (cathedral-mcp)PUBLIC

Inferred from this listing’s public package details and description. Check the project’s source before installing.

Install

uvx cathedral-mcp

All setup options ↓

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About Cathedral — Persistent Memory for AI Agents

Cathedral — Persistent Memory for AI Agents is an MCP server focused on Memory & knowledge: Persistent memory and drift detection for AI agents across session restarts.

It is published on PyPI as cathedral-mcp and hosted on GitHub at AILIFE1/Cathedral (10 GitHub stars, 32 PyPI downloads, last repository push on 2026-06-13). Based on its public metadata, it operates with standard local or API scope without broad shell execution flags noted.

Setup

These use the package this listing points to. Check the project’s own instructions before running anything.

PyPI command

uvx cathedral-mcp

PyPI (pip) command

pip install cathedral-mcp

MCP client config

For Claude Desktop (claude_desktop_config.json) or Cursor (.cursor/mcp.json).

json
{
  "mcpServers": {
    "cathedral-mcp": {
      "command": "uvx",
      "args": [
        "cathedral-mcp"
      ]
    }
  }
}

Why this grade

DD — High risk signals

Signal-based grade (1/7 points): public source code. This reflects adoption and transparency, not a code review.

Popularity and upkeep

24/100
GitHub stars
10
PyPI downloads
32
Listing last refreshed
2026-10-28

These are public popularity signals, not a maintenance check. Look at the repository’s commit history and open issues.

Security reports

No reports found for this package in our research (last checked 2026-10-30).

Check a specific version →

Risks to watch for

  • Dependency & version pinning: Distributed via PyPI (cathedral-mcp). Pin an exact release version or commit SHA rather than floating tags so upstream updates are reviewed first.

How to lower the risk

Least-privilege permissions

  • Give it access only to the specific folders, accounts or projects it needs, never your whole drive or admin account.
  • Use a separate, limited API key or login just for this tool so you can switch it off without affecting anything else.

Network isolation

  • Run it on a work computer or sandbox account, not one holding personal or company-sensitive data.
  • If your IT team can, limit which websites and services it is allowed to contact.

Monitoring

  • Check its activity history or logs weekly at first, and look at what it changed or sent.
  • Turn on alerts for new logins or unusual usage on any account it connects to.

Red flags to watch for

  • It asks for more access than its job requires, or prompts you to paste passwords.
  • It suddenly updates with new owners, or starts contacting unfamiliar websites.

Questions

How do I install Cathedral — Persistent Memory for AI Agents?

Run uvx cathedral-mcp (or pip install cathedral-mcp) in your terminal, or add the server entry to your claude_desktop_config.json or .cursor/mcp.json as shown in the Setup section on this page. Full setup docs and environment variables are in github.com/AILIFE1/Cathedral.

Are there security reports about Cathedral — Persistent Memory for AI Agents?

No reports found for this package in our research (last checked 2026-10-30). Cathedral — Persistent Memory for AI Agents currently holds Grade D (High risk signals) based on public adoption and transparency signals. Review the permissions and source repository before granting access to local files, shell commands, or API keys.

Is Cathedral — Persistent Memory for AI Agents actively maintained?

Cathedral — Persistent Memory for AI Agents has 10 GitHub stars and 32 PyPI downloads, with its latest repository commit pushed on 2026-06-13. Our directory data was last refreshed on 2026-10-28. Check recent commit activity, release tags, and open issues at github.com/AILIFE1/Cathedral before pinning it in production.

What are alternatives to Cathedral — Persistent Memory for AI Agents?

You can compare Cathedral — Persistent Memory for AI Agents side by side with other Memory MCP servers in the Related tools section on this page, or use the Compare tool on AgentArmorHQ.

README badge and team notes

Maintain or use Cathedral — Persistent Memory for AI Agents? Show its live grade in your GitHub README, docs site, or run a check from the terminal before you install.

AgentArmorHQ Risk Grade D for Cathedral — Persistent Memory for AI Agents

GitHub README Markdown:

markdown
[![AgentArmorHQ Risk Grade for Cathedral — Persistent Memory for AI Agents](https://agentarmorhq.com/api/badge/ailife1-cathedral)](https://agentarmorhq.com/skills/ailife1-cathedral)

HTML embed:

html
<a href="https://agentarmorhq.com/skills/ailife1-cathedral"><img src="https://agentarmorhq.com/api/badge/ailife1-cathedral" alt="AgentArmorHQ Risk Grade for Cathedral — Persistent Memory for AI Agents" height="20" /></a>

Terminal check:

terminal
curl -fsSL https://agentarmorhq.com/api/cli | node --input-type=module - check "ailife1-cathedral"

Share with your security lead

Need sign-off to use Cathedral — Persistent Memory for AI Agents? Copy this note for Slack, a ticket or a pull request.

### AgentArmorHQ Security Review Memo: Cathedral — Persistent Memory for AI Agents
- **Listing URL:** https://agentarmorhq.com/skills/ailife1-cathedral
- **Type:** App connector
- **Risk Grade:** Grade D (High risk signals)
- **Outside Security Advisories on File:** 0
- **Public Adoption:** 10 GitHub stars

#### Permission & Blast-Radius Signals
- **Local files:** No local folder access noted
- **Command execution:** No shell command runner noted
- **Network reach:** Local or standard API calls
- **Credentials:** No API token required
- **Package source:** PyPI (cathedral-mcp)

#### Recommended Hardened Setup
- **Command:** `uvx cathedral-mcp`
- **Controls:** Pin an exact version in `.mcp.json`, scope access to a single workspace folder, and use a least-privilege read-only token where supported.

_Based on public adoption and transparency signals as of Oct 23, 2026. Our opinion, not a code audit or security guarantee._

Key facts

Type
App connector
Publisher
AILIFE1
Source code
github.com/AILIFE1/Cathedral
Install command
pip install cathedral-mcp
Est. context load
~850 tokens / turn (~5 tool schemas, 0.43% of 200k context)
Popularity
10 GitHub stars, 32 PyPI downloads
Last updated
2026-10-28
Last graded
2026-10-23

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