Uxui Principles

Name: Uxui Principles
Author: uxuiprinciples

by uxuiprinciplesversion 1.2.1i★ –iRuns on your computer

Registry nameio.github.joselhurtado/uxui-principles

Install

Overview

Description from the maker (original English)

195 UX/UI principles with citations, 12 UX smells and 12 flow checklists for AI agents, EN and ES.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi0 of 1 passedChecked from public information; code not scanned yet
UsageiVery new↓ 53/wk · ★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs on your computer
Transport: stdio
Category: Other
You need to fill in: UXUI_API_KEY

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 0 of 1 passed
Runs on your computer with your user’s permissions (files, network, apps).
You fill in yourself: UXUI_API_KEY

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

npmNode.js installed (for the npx command)

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "uxui-principles": {
      "command": "npx",
      "args": [
        "-y",
        "@uxuiprinciples/mcp-server"
      ],
      "env": {
        "UXUI_API_KEY": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add uxui-principles --env UXUI_API_KEY=your-value -- npx -y @uxuiprinciples/mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "uxui-principles": {
      "command": "npx",
      "args": [
        "-y",
        "@uxuiprinciples/mcp-server"
      ],
      "env": {
        "UXUI_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "uxui-principles": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@uxuiprinciples/mcp-server"
      ],
      "env": {
        "UXUI_API_KEY": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

UXUI_API_KEY secret env
Optional. Principles Library API key from uxuiprinciples.com/account. Unlocks full guide bodies, AI prompts and audit_interface. Without it the server runs offline on the bundled dataset.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

! Caution
Maker matches the repo
The publisher (joselhurtado) is not the repo owner (uxuiprinciples); someone else may have listed it
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
– Not applicable
Endpoint responds
This one runs on your computer; there is no internet endpoint
– Not applicable
Sign-in with OAuth
Runs on your computer and uses local settings instead
… Not checked yet
No hidden instructions in tool descriptions
Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

More stars than 0% of the other 18474 servers in this category
Published to the registry more recently than 97% of the other 18474 servers in this category
Basic checks equal to or better than 21% of the other 18474 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Uxui Principles safe?

It passed 0 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: UXUI_API_KEY

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.2.1) reached the registry yesterday.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, Thalovant MCP

Alternatives

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Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

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Thalovant MCP

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README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@uxuiprinciples/mcp-server

MCP server for UX/UI Principles: 195 research-backed principles with their citations, 12 UX smells with fix recipes and 12 user-flow checklists, in English and Spanish, inside Claude Code, Claude Desktop, Cursor, VS Code, Windsurf or any MCP client.

Free and offline by default: the dataset ships inside the package and the server makes no network call. A Principles Library API key turns on pro mode, which adds the full guide bodies, the AI prompts and an interface audit through the uxuiprinciples.com API.

What is MCP?

Model Context Protocol (MCP) is an open protocol that lets an AI assistant call external tools. This server speaks MCP over stdio and registers 13 tools.

Installation

Requires Node.js 18 or newer. npx -y fetches the latest version on first run.

Claude Code

claude mcp add uxui-principles -- npx -y @uxuiprinciples/mcp-server

Add --scope user to make it available in every project. Confirm with claude mcp list.

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows), then restart Claude Desktop:

"mcpServers": { "uxui-principles": { "command": "npx", "args": ["-y", "@uxuiprinciples/mcp-server"] } } }

Cursor

Add to .cursor/mcp.json in the project (or ~/.cursor/mcp.json for every project), then enable the server in Cursor Settings, MCP:

"mcpServers": { "uxui-principles": { "command": "npx", "args": ["-y", "@uxuiprinciples/mcp-server"] } } }

VS Code

Add to .vscode/mcp.json in the workspace, then start the server from the MCP panel or let Copilot agent mode start it:

"servers": { "uxui-principles": { "type": "stdio", "command": "npx", "args": ["-y", "@uxuiprinciples/mcp-server"] } } }

Windsurf

Add to ~/.codeium/windsurf/mcp_config.json, then refresh the MCP list in Cascade:

"mcpServers": { "uxui-principles": { "command": "npx", "args": ["-y", "@uxuiprinciples/mcp-server"] } } }

Global install

npm install -g @uxuiprinciples/mcp-server

uxui-mcp

Point the client at the uxui-mcp binary instead of npx. Re-run the install to pick up new versions.

Pro mode (Principles Library key)

The Principles Library ($59/year) includes a REST API key. Give it to the server as the UXUI_API_KEY environment variable and four tools change:

Tool	Free mode	Pro mode
`get_principle`	Metadata, summary, citations, link	The same plus the full guide body in `content`
`get_principle_prompts`	Link to the guide	The principle's AI prompts
`audit_interface`	Refuses with the key hint	Findings mapped to principles and smells, score, priority fixes
`check_requirements`	Refuses with the key hint	Pass or fail per required-state rule, each with its principle and citations

Everything else keeps running offline. If the API is unreachable, get_principle and get_principle_prompts fall back to the free answer and report the failure in proError; audit_interface and check_requirements return the error code.

"mcpServers": { "uxui-principles": { "command": "npx", "args": ["-y", "@uxuiprinciples/mcp-server"], "env": { "UXUI_API_KEY": "uxui_live_..." } } } }

For Claude Code: claude mcp add uxui-principles -e UXUI_API_KEY=uxui_live_... -- npx -y @uxuiprinciples/mcp-server. The key is read from the environment only and is never logged. Get or rotate yours at uxuiprinciples.com/account. The server's startup line on stderr says pro mode or free mode, and the instructions it hands the client say the same.

Available tools

Principles

Tool	Description
`get_principle`	One principle by slug: summary, citations (author, title, year, url) and the link to the full guide. Pro: the full guide body
`search_principles`	Search by query, part, difficulty, or tags
`list_principles`	List all principles or filter by part
`get_principle_prompts`	The AI prompts for a principle. Pro: the prompt texts; free: the link to the guide

Smells (anti-patterns)

Tool	Description
`get_smell`	Get a smell with symptoms and fix recipe
`list_smells`	List all smells, optionally by category
`detect_smell`	Detect smells from a UI description, written in English or Spanish
`suggest_fix`	Get fix suggestions for a UX issue

Flows (user journeys)

Tool	Description
`get_flow`	Get a flow with pre/post-flight checklists
`list_flows`	List all available flows
`generate_checklist`	Generate checklist for a flow phase
`get_flow_principles`	Get key principles for a flow

Pro

Tool Description

audit_interface Audit a described screen (20 to 5,000 characters): findings with severity, remediation and business impact, score, interface type, strengths and the three priority fixes. Needs UXUI_API_KEY

check_requirements Check a screen given as data (flow, components, actions with consequential and automated flags, states implemented) against eight required-state rules: confirmation before consequential actions, error, empty and loading states, undo or edit, sources on AI output, recovery after an AI error, consent before automation. Pass, fail or not_applicable per rule with the principle and its citations, plus a markdown summary. Needs UXUI_API_KEY

Usage examples

You: What principle should I follow for form design?

Claude: Let me search for form-related principles... [Calls search_principles with query="form"]

Based on the UX/UI Principles database, here are the key principles for form design:

Progressive Disclosure (D.1.1.01) - Show only essential fields initially
Inline Validation - Validate as users type
Smart Defaults - Pre-fill common choices

...

You: My login form has a 60% abandonment rate. Help me fix it.

Claude: Let me detect potential UX issues... [Calls detect_smell with description="login form high abandonment"]

I detected "Form Graveyard" smell with high confidence. Let me get the fix recipe... [Calls get_smell with id="form-graveyard"]

Here's my analysis and recommendations:

Reduce fields to email + password only
Add social login options
Use inline validation

...

Let me also get the flow checklist for the form... [Calls generate_checklist with flow_id="forms" phase="postflight"]

With a key:

You: Audit this checkout: three steps, no order summary until the last one, the Pay button is disabled with no explanation until every field validates.

Claude: [Calls audit_interface with the description] Score 58, fair. Two warnings: Visibility of System Status (order summary hidden) and Silent Errors (disabled button without feedback). Priority fix: ...

After building a screen:

You: Build the settings page: profile form, an AI summary of recent activity, and a danger zone with "Delete account". Then check it.

Claude: [Builds the page, then calls check_requirements with flow "settings", the components, the actions (Delete account flagged consequential) and the states it implemented] 3 of 6 applicable rules fail: undo-or-edit (User Control and Freedom, Nielsen 1994), show-sources (AI Source Citations, Liu et al. 2023), ai-error-recovery (Efficient AI Correction, Amershi et al. 2019). Adding an undo toast, a sources line under the summary and a regenerate control...

Bilingual support

All tools accept locale: "en" | "es". detect_smell and suggest_fix understand descriptions written in either language whatever the locale:

search_principles({ query: "navegación", locale: "es" })

detect_smell({ description: "el formulario es demasiado largo", locale: "es" })

Data included

195 principles across 6 parts, with 500+ bibliographic references returned by get_principle (the guides cite 2,400+ academic citations in full)
12 UX smells with fix recipes
12 user flows with checklists
Bilingual (English + Spanish)

Local development

git clone https://github.com/joselhurtado/uxuiprinciples-web.git

cd uxuiprinciples-web npm install npm run build --workspace=@uxuiprinciples/principles-data npm run build --workspace=@uxuiprinciples/mcp-server node packages/mcp-server/dist/index.js

npm run smoke-test --workspace=@uxuiprinciples/mcp-server packs the build, installs it in a temp project and drives both modes over stdio (pro mode against a local fake of the API). server.json next to this README is the MCP Registry manifest; publish with mcp-publisher publish after the npm release.

Uxui Principles

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Otheri

Common questions

Alternatives

Spec Driven Development

Remote Desktop Commander

Thalovant MCP

README from the maker

@uxuiprinciples/mcp-server

What is MCP?

Installation

Claude Code

Claude Desktop

Cursor

VS Code

Windsurf

Global install

Pro mode (Principles Library key)

Available tools

Principles

Smells (anti-patterns)

Flows (user journeys)

Pro

Usage examples

Bilingual support

Data included

Local development

License

Links