ucn

MCP server · npm · ★ 2 · graded 2026-10-20Source linked

Auditable AST code intelligence for AI agents: 18 task-oriented commands through one MCP tool, CLI, or agent skill. Supports JS/TS, Python, Go, Rust, Java, C, C++, C#, and HTML.

No outside reports on file

ucn is distributed via npm (ucn); review its source code, dependencies, and requested permissions before use.

Based on public adoption and transparency signals as of Oct 19, 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 executionRuns shell or system commandsREVIEW
Network reachConnects to outside service APINOTED
CredentialsNo API token requiredLOW
Package sourcenpm (ucn)PUBLIC

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

Install

npx -y ucn

All setup options ↓

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About Ucn

Ucn is an MCP server focused on Developer tools: review AST code intelligence for AI agents: 18 task-oriented commands through one MCP tool, CLI, or agent skill. Supports JS/TS, Python, Go, Rust, Java, C, C++, C#, and HTML.

It is published on npm as ucn and hosted on GitHub at mleoca/ucn (2 GitHub stars, 203 weekly npm downloads, last repository push on 2026-10-15). Based on its public metadata, it operates with standard local or API scope without broad shell execution flags noted.

Setup

Check these steps against the project’s own instructions before running anything.

Run ucn with --ignore-scripts in claude_desktop_config.json or .cursor/mcp.json:

json

{
  "mcpServers": {
    "ucn": {
      "command": "npx",
      "args": ["-y", "--ignore-scripts", "ucn"]
    }
  }
}

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

28/100

GitHub stars: 2
Weekly npm downloads: 266
Listing last refreshed: 2026-10-29

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 2026-10-29).

Check a specific version →

Risks to watch for

Dependency & version pinning: Distributed via npm (ucn). 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 Ucn?

Run npx -y ucn 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/mleoca/ucn.

Are there security reports about Ucn?

No reports found for this package in our research (last checked 2026-10-29). Ucn currently holds Grade D (High risk signals) based on public adoption and transparency signals. Key risk areas to watch include dependency & version pinning:.

Is Ucn actively maintained?

Ucn has 2 GitHub stars and 266 weekly npm downloads, with its latest repository commit pushed on 2026-10-15. Our directory data was last refreshed on 2026-10-29. Check recent commit activity, release tags, and open issues at github.com/mleoca/ucn before pinning it in production.

What are alternatives to Ucn?

Compare Ucn side by side with similar MCP servers in the Related tools section on this page, or browse all MCP servers on AgentArmorHQ.

Maintain or use Ucn? 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 Ucn](https://agentarmorhq.com/api/badge/mleoca-ucn)](https://agentarmorhq.com/skills/mleoca-ucn)

HTML embed:

html

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

Terminal check:

terminal

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

Share with your security lead

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

### AgentArmorHQ Security Review Memo: ucn
- **Listing URL:** https://agentarmorhq.com/skills/mleoca-ucn
- **Type:** App connector
- **Risk Grade:** Grade D (High risk signals)
- **Outside Security Advisories on File:** 0
- **Public Adoption:** 2 GitHub stars, 266 weekly npm downloads

#### Permission & Blast-Radius Signals
- **Local files:** No local folder access noted
- **Command execution:** Runs shell or system commands
- **Network reach:** Connects to outside service API
- **Credentials:** No API token required
- **Package source:** npm (ucn)

#### Recommended Hardened Setup
- **Command:** `npx -y --ignore-scripts ucn`
- **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 19, 2026. Our opinion, not a code audit or security guarantee._

Key facts

Type: App connector
Publisher: mleoca
Source code: github.com/mleoca/ucn
Install command: npm install ucn
Est. context load: ~550 tokens / turn (~3 tool schemas, 0.27% of 200k context)
Popularity: 2 GitHub stars, 266 weekly npm downloads
Last updated: 2026-10-29
Last graded: 2026-10-20

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