Citadel

MCP server · PyPI · ★ 3 · graded 2026-10-23Source linked

Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools

No outside reports on file

Citadel connects to external service APIs; restrict its folder reach, network access, and credentials before installing.

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

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What it can access

Local filesNo local folder access notedLOW
Command executionNo shell command runner notedLOW
Network reachConnects to outside service APINOTED
CredentialsNo API token requiredLOW
Package sourcePyPI (citadeldb-mcp)PUBLIC

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

Install

uvx citadeldb-mcp

All setup options ↓

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Everything known

We found nothing about this project in the sources we read (last checked 2026-10-30). That does not mean it has no problems.

0 incidents · 0 advisories · 0 news articles · 0 community threads · checked 2026-10-30

Popularity grade: D (from public signals such as stars and downloads, not a code review). Graded 2026-10-23.

Sources we read: OSV, GitHub Advisory Database, CISA Known Exploited Vulnerabilities, 44 security news feeds and our incident library. Last checked 2026-10-30.

Check a specific version →

About Citadel

Citadel is an MCP server focused on Data & databases and Web & browsing: Encrypted-first embedded database with vector search and agent memory, exposed as MCP tools.

It is published on PyPI as citadeldb-mcp and hosted on GitHub at yp3y5akh0v/citadel (3 GitHub stars, 208 PyPI downloads, last repository push on 2026-09-28). Based on its public metadata, its operational scope includes: connects to outside service api.

Setup

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

PyPI command

uvx citadeldb-mcp

PyPI (pip) command

pip install citadeldb-mcp

MCP client config

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

json

{
  "mcpServers": {
    "citadeldb-mcp": {
      "command": "uvx",
      "args": [
        "citadeldb-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

25/100

GitHub stars: 3
PyPI downloads: 208
Listing last refreshed: 2026-10-30

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

Risks to watch for

External API & account scope: Connects to third-party service APIs. Use a dedicated, least-privilege token scoped only to the workspaces or repositories this tool needs.
Dependency & version pinning: Distributed via PyPI (citadeldb-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 Citadel?

Run uvx citadeldb-mcp (or pip install citadeldb-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/yp3y5akh0v/citadel.

Are there security reports about Citadel?

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

Citadel has 3 GitHub stars and 208 PyPI downloads, with its latest repository commit pushed on 2026-09-28. Our directory data was last refreshed on 2026-10-30. Check recent commit activity, release tags, and open issues at github.com/yp3y5akh0v/citadel before pinning it in production.

What are alternatives to Citadel?

You can compare Citadel side by side with other Search, Memory MCP servers in the Related tools section on this page, or use the Compare tool on AgentArmorHQ.

Maintain or use Citadel? Show its live grade in your GitHub README, docs site, or run a check from the terminal before you install.

GitHub README Markdown:

markdown

[![AgentArmorHQ Risk Grade for Citadel](https://agentarmorhq.com/api/badge/yp3y5akh0v-citadel)](https://agentarmorhq.com/skills/yp3y5akh0v-citadel)

HTML embed:

html

<a href="https://agentarmorhq.com/skills/yp3y5akh0v-citadel"><img src="https://agentarmorhq.com/api/badge/yp3y5akh0v-citadel" alt="AgentArmorHQ Risk Grade for Citadel" height="20" /></a>

Terminal check:

terminal

curl -fsSL https://agentarmorhq.com/api/cli | node --input-type=module - check "yp3y5akh0v-citadel"

Share with your security lead

Need sign-off to use Citadel? Copy this note for Slack, a ticket or a pull request.

### AgentArmorHQ Security Review Memo: Citadel
- **Listing URL:** https://agentarmorhq.com/skills/yp3y5akh0v-citadel
- **Type:** App connector
- **Risk Grade:** Grade D (High risk signals)
- **Outside Security Advisories on File:** 0
- **Public Adoption:** 3 GitHub stars

#### Permission & Blast-Radius Signals
- **Local files:** No local folder access noted
- **Command execution:** No shell command runner noted
- **Network reach:** Connects to outside service API
- **Credentials:** No API token required
- **Package source:** PyPI (citadeldb-mcp)

#### Recommended Hardened Setup
- **Command:** `uvx citadeldb-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: yp3y5akh0v
Source code: github.com/yp3y5akh0v/citadel
Install command: pip install citadeldb-mcp
Est. context load: ~550 tokens / turn (~3 tool schemas, 0.27% of 200k context)
Popularity: 3 GitHub stars, 208 PyPI downloads
Last updated: 2026-10-30
Last graded: 2026-10-23

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