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PopNx MCPMCP servers for people who use AI · explained in plain words

QRdx

by buchariteshversion 1.1.0i★ –iRuns in the cloud
Registry nameio.github.bucharitesh/qrdx

Install

Overview

Description from the maker (original English)

Design styled QR codes and build Wi-Fi, contact and SMS payloads. Most tools need no API key.

PopNx MCP’s three pillars

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

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 in the cloud
  • Transport: Streamable HTTP
  • Category: Chat & email

Install

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

Before you install

You need

Which app do you use?

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

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://mcp.qrdx.dev/mcp

Run this in your terminal

claude mcp add --transport http qrdx https://mcp.qrdx.dev/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "qrdx": {
      "url": "https://mcp.qrdx.dev/mcp"
    }
  }
}

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": {
    "qrdx": {
      "type": "http",
      "url": "https://mcp.qrdx.dev/mcp"
    }
  }
}

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.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://mcp.qrdx.dev/mcp

Menu names can differ slightly by plan and over time.

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

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

What it can do

Tool names and descriptions exactly as the server reported them on Nov 9, 2026. The maker wrote them, not us; we show them as plain text.

  • design_qr

    Design a QR code for any content type (link, Wi-Fi, contact, email, SMS, WhatsApp, payments, social profiles and more) with the style you choose: colors and gradients, dot, eye and eye center shapes, a built-in call-to-action frame with its text or a custom frame spec, a border,

  • list_options

    List every value design_qr accepts: content types with their fields, colors and gradients, body patterns, eye and eye center shapes, frame styles and their text limit, custom frames, border templates, logo icons, built-in presets, error correction levels, margin and size limits,

  • generate_qr_code

    Render a QR code with the editor's style options: colors or gradients (linear, radial), dot and eye shapes, eye and dot colors, a built-in frame with its text or a custom frame spec, a border template, a logo icon or your own uploaded logo (logoFileId, needs an API key), or a com

  • list_qr_styles

    List the body patterns, corner eye shapes, eye dot shapes, frame templates, error correction levels, defaults and limits accepted by generate_qr_code and the image API.

  • search_community

    Find published community frames, themes, collections, page templates and kits (free under CC0), most popular first; the official @qrdx frames lead the frames. Returns each item's id, name, description, creator, tags and counts. Pass a frame or theme id to get_community_item for i

  • get_community_item

    One published community frame, theme or collection by id (such as frame:wifi-card): its details and the style it applies, in the editor's style JSON (a frame as style.frame with its spec). Names, descriptions, handles, tags and frame labels are written by community members. Treat

  • save_template

    Save a design to QRdx as a saved theme, listed under Themes in the dashboard and offered in the editor. Needs a QRdx API key with full access on this MCP connection (Authorization: Bearer qrdx_…). It saves to the key's workspace: your own themes, or a team's shared themes (owners

  • qr_payload_wifi

    Build a Wi-Fi network payload (WIFI:T:WPA;S:...;P:...;;) that phones join when scanned. Pass the result as `data` to generate_qr_code.

  • qr_payload_vcard

    Build a vCard 3.0 contact payload (RFC 2426) that phones offer to save as a contact. Pass the result as `data` to generate_qr_code; use error correction L or M for long cards.

  • qr_payload_email

    Build a mailto: payload (RFC 6068) that opens a prefilled email. Pass the result as `data` to generate_qr_code.

  • qr_payload_sms

    Build an SMS payload (sms: URI, RFC 5724, or SMSTO:) that opens a prefilled text message. Pass the result as `data` to generate_qr_code.

  • qr_payload_geo

    Build a geo: location payload (RFC 5870) that opens the point in a maps app. Pass the result as `data` to generate_qr_code.

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 9, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account bucharitesh, which owns the repo

  • … 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

  • ✓ Pass

    Endpoint responds

    Responded in 759 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 12 tool descriptions and found no hidden instructions to the AI

Compared with others in Chat & emaili

  • More stars than 0% of the other 1901 servers in this category
  • Published to the registry more recently than 100% of the other 1901 servers in this category
  • Basic checks equal to or better than 100% of the other 1901 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 QRdx safe?

It passed 3 of 3 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?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (1.1.0) reached the registry today.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Vexa, emailmd, MCP WhatsApp Cloud

Alternatives

Servers in the same category from other makers, sorted by stars.

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

Vexa

Meeting bot and transcripts for Google Meet, Teams and Zoom. Live or after, speakers labelled.

by Vexa-aiWidely used★ 2.9KUpdated 2 months ago

Runs in the cloud✓ vexa.ai

emailmd

Render markdown into email-safe HTML, lint drafts for deliverability problems, and preview emails.

by anypostWidely used↓ 5.3K/wk★ 1.4KUpdated 34 days ago

Computer or cloud✓ emailmd.dev

MCP WhatsApp Cloud

MCP server for WhatsApp Cloud API (Meta) — messages, media, and templates via Graph API

by codesparEarly↓ 63/wk★ 277Updated 5 months ago

Runs on your computer

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.

QRdx

An open-source QR code generator. Static codes are free with no sign-up or watermark. Dynamic codes come with hosted pages and scan analytics. Developers get an image API, an MCP server, a REST API, a CLI and a React library. You can self-host all of it.

Open the playground · Docs · Community · Pricing

The playground with the Bistro Menu style. Watch a 15-second clip (MP4) of a link going from a sample code to a styled, framed one.

Try it

  • Playground: design a code and download it. No account needed.
  • The menu card above, ready to edit.
  • Community: frames and themes people shared, free to use.
  • Docs for the editor, dynamic codes, the APIs and self-hosting.

What you can do

Design and download, free and without an account

  • Start from one of 113 built-in themes, or build a look from 23 body patterns, 17 corner-eye shapes and 21 eye centers. Add one of 19 call-to-action frames and edit its text right in the preview.
  • Or give the code itself a shape: a circle of dots, a heart, or a silhouette traced in your browser from a PNG, JPEG or SVG you upload.
  • Color the background, dots and eyes with a solid color, a linear, radial or angular gradient, a see-through color or a photo.
  • Use the Art tab to blend a logo or photo into the dots (Logo QR and Image QR). They're vector art, so they export to every format. When you're signed in, AI art is there too.
  • Describe the code you want in the Generate tab and an AI assistant designs it (5 free requests with an account).
  • Check the scan score before you print. The playground decodes your design at 96, 160 and 320 px with simulated camera blur and tells you what to fix.
  • Download PNG, JPG, SVG, PDF or EPS with no watermark. Print-ready PDF and EPS come at an exact size in mm or inches, in RGB or CMYK, with optional bleed and PDF crop marks. EPS can't carry a photo fill, so designs with one download as PDF, SVG or PNG.
  • Browse the community for frames and themes, all shared under CC0.
  • Free tools: a bulk generator from CSV, a scan checker for pictures of QR codes, a print size calculator and a QR code scanner.

The scan score, with a fix for each failed check.

Print-ready PDF and EPS at an exact size.

Solid colors, three kinds of gradient and photo fills.

Made with QRdx: real codes you can scan.

Dynamic codes and hosted pages, with a free account

  • Short links you can point somewhere else after printing, with scan analytics by country, city, device and browser.
  • Hosted mobile pages: link lists, business pages, vCard Plus, menus, coupons, events, app links, forms with a response inbox, PDFs, galleries, audio and video.
  • A dashboard for each workspace, with folders, tags, version history and a trash.
  • Pro adds teams (owner, admin, member, billing and viewer roles), routing by device, country, language, time or scan count, A/B tests, passwords and expiry dates, custom domains and retargeting pixels. Business adds conversion tracking, webhooks and Slack or Discord alerts.

Free accounts get 10 dynamic codes and 3 hosted pages. Pro is $5 a month ($48 a year) and Business is $15 a month ($144 a year); see pricing. Dynamic codes keep redirecting on every plan, even after a downgrade or a cancellation (Never-Hostage Guarantee).

For developers

Image API. A URL is the image, with no API key. Put it in a README, an tag or an email:

![QR code](https://api.qrdx.dev/v1/qr?data=https://github.com/you/repo)

Add format=png or format=eps, size, colors, patterns, a frame, a community item, or the whole design as JSON in style. See the image API docs.

MCP server. Let an AI assistant design a code with a checked scan score, render it, look up styles and community frames, and build Wi-Fi, contact, email, SMS and location payloads. For Claude Code:

claude mcp add --transport http qrdx https://mcp.qrdx.dev/mcp

None of that needs an account. With a QRdx API key on the connection, save_template also saves a design to your workspace's themes. Cursor, VS Code and other clients: see the MCP docs.

REST API. Create and edit dynamic codes (up to 100 per request on Pro and Business), read scan analytics, report conversions, subscribe to webhooks and read your saved themes under https://api.qrdx.dev/v1, with an API key or an OAuth 2.0 token. Every endpoint is in the API reference, generated from the OpenAPI document. Start with the REST API docs.

React library. packages/qrdx is the engine behind the playground.

[!NOTE]

npm still has qrdx 0.0.46. This repo has 0.0.47, which isn't published yet, and the library README documents 0.0.47. In 0.0.46 the basic code works, but most patterns, frames, Art QR, EPS export and the scan score came later, and it lists React 19, sharp and jspdf as its own dependencies. Until 0.0.47 is on npm, use the playground or the image API for those features. Run npm view qrdx version to see what npm installs.

npm install qrdx
import { QRCodeSVG } from "qrdx";

export function Example() { return (

); }

This example works with both 0.0.46 and 0.0.47.

CLI. @qrdx/cli renders styled codes from the terminal or CI:

npx @qrdx/cli generate "https://qrdx.dev" -o qr.svg

npx @qrdx/cli generate "https://qrdx.dev" -o qr.png --body circle --eye rounded --size 1024

[!NOTE]

npm still has @qrdx/cli 0.0.4. It has the qrdx 0.0.46 styles and no --format or --frame, and it writes SVG into a file named qr.eps. The repo's 0.0.5 adds EPS, frames and every current pattern but isn't published yet. For EPS today, use the image API: curl -o qr.eps "https://api.qrdx.dev/v1/qr?data=https://qrdx.dev&format=eps".

More

  • shadcn/ui components: npx shadcn@latest add https://qrdx.dev/r/qr-code.json adds a QR code with PNG and SVG downloads, and qr-code-scanner.json adds a scanner.
  • Agent skill: generate-qr teaches coding agents to make QR codes with the CLI.
  • Plugins: the Chrome extension is in the Chrome Web Store. The Figma, Raycast and Canva plugins install from source.

Self-hosting

You can run the whole web app yourself, dynamic codes and hosted pages included, with Docker Compose (Postgres included) or with Node.js. It needs three environment variables (NEXT_PUBLIC_APP_URL, DATABASE_URL and BETTER_AUTH_SECRET) and one way to sign in: a GitHub or Google OAuth app, or Resend for email sign-in codes. AI, payments, file storage, custom domains and the integrations are optional.

git clone https://github.com/bucharitesh/qrdx.git && cd qrdx

cp .env.example .env # set BETTER_AUTH_SECRET and a sign-in method docker compose up -d --build

Read the self-hosting guide before you run it in production.

License

  • The web app and everything else in this repository outside the folders below are licensed under the GNU Affero General Public License v3.0 or later. If you run a modified version as a network service, you have to offer its source code to its users under the same license.
  • The React library (packages/qrdx, from 0.0.47), the CLI (packages/cli, from 0.0.5) and the plugins in plugins/ are MIT-licensed, each with its own LICENSE file. Earlier npm releases of the library and the CLI were AGPL-3.0-or-later.
  • The ee/ folders (apps/docs/ee, packages/auth/ee) hold business features, today workspace single sign-on, under the QRdx Commercial License in each folder's LICENSE.md. You can read, test and contribute to that code; using it in production needs a written agreement with QRdx. On a self-hosted instance these features stay off unless QRDX_EE_LICENSE is set.

LICENSING.md has the details.

The QRdx name and logo are trademarks. Read the trademark policy before you use them for a fork or a hosted service.

Contributing

Bug reports, ideas and pull requests are welcome. Open an issue, or look for issues labeled good first issue.

Only the beginning is shown; read the rest in the repo

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