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

HQBase

by HQBaseversion 1.0.0i★ –iRuns in the cloud
Registry nameio.github.HQBase/hqbase

Install

Overview

Description from the maker (original English)

Connect AI agents to your self-hosted HQBase shared email workspace.

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

  • Basic checks: 1 of 1 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

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://{installation_domain}/mcp

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Run this in your terminal

claude mcp add --transport http hqbase 'https://{installation_domain}/mcp'

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Or copy the settings yourself

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

{
  "mcpServers": {
    "hqbase": {
      "url": "https://{installation_domain}/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.

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "hqbase": {
      "type": "http",
      "url": "https://{installation_domain}/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://{installation_domain}/mcp

The address contains {…} parts that only you know (such as your account), so copy it and fill them in.

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

We have not read this server’s tool list yet; we check endpoints in rotation.

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 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account HQBase, 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

  • – Not applicable

    Endpoint responds

    The address needs your own account values, so we cannot check it for you

  • – Not applicable

    Sign-in with OAuth

    The address needs your own account values, so we cannot check it for you

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Chat & emaili

  • More stars than 0% of the other 1760 servers in this category
  • Published to the registry more recently than 26% of the other 1760 servers in this category
  • Basic checks equal to or better than 100% of the other 1760 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 HQBase safe?

It passed 1 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?

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 (1.0.0) reached the registry 2 months ago.

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:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Vexa

by Vexa-ai

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

Runs in the cloud★ 2,949Apache-2.0Updated 2 months ago
Install

emailmd

by anypost

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

Computer or cloud★ 1,385MITUpdated 30 days ago
Install

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

Runs on your computer★ 277MITUpdated 5 months ago
Install

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.

HQBase

Your team's email workspace. On your infrastructure.

An open-source shared email workspace that runs in your Cloudflare account and keeps mail and credentials in infrastructure you control.

Website · Documentation · Releases · Contributing

About HQBase

HQBase gives teams one place to work with shared mailboxes while keeping the application, mail, and Cloudflare credentials in customer infrastructure. It includes:

  • Shared mailboxes and team access controls.
  • Multi-domain setup, drafts, and audit history.
  • Installation, update, backup, and recovery operations.
  • An OAuth-protected remote MCP server.

See the product documentation for installation, daily use, architecture, and operations.

Made by the community

We love seeing people build around HQBase. Independent clients give you more ways to use your workspace:

  • Herald — A native macOS email client for HQBase.

HQBase has tested Herald for compatibility. It is made and maintained by independent community developers, so its releases, support, and behavior remain in their care rather than HQBase's. Please review the project and decide whether it is right for your workspace.

Develop locally

Start the application
pnpm install

pnpm db:migrate:local pnpm db:seed:local pnpm dev

Before you run the optional seed command, add these values to .dev.vars:

  • BETTER_AUTH_SECRET
  • HQBASE_LOCAL_SEED_PASSWORD with 8 to 128 characters

The seed command writes only to local D1 and does not contact Cloudflare OAuth. Open http://127.0.0.1:5173/ and sign in as owner@hqbase.test with that password. Vite serves the frontend with live reload on port 5173 and proxies API requests to the Wrangler Worker on port 8787.

To use the first-run setup flow, omit the seed command and open http://localhost:5173/setup.

Reset local data

To discard all local D1 data, rebuild the schema, and recreate the demo workspace:

pnpm db:reset:local

pnpm db:seed:local

The reset command is destructive and local only. It does not change a deployed database.

Preview the setup interface

For presentation-only onboarding work:

pnpm dev:setup-ui

Open http://127.0.0.1:5173/__ui/setup.

Review the visual system

To inspect the shared components, interactive states, product patterns, and local screen routes:

pnpm dev:ui

Open http://127.0.0.1:5173/__ui/design. The gallery uses deterministic presentation fixtures and does not call product APIs.

Verify changes

Run the full local quality gate:

pnpm check

pnpm deploy:dry-run

Run pnpm cf:typegen after you change wrangler.jsonc.

Pushes to main run the same quality gate and deployment dry-run. Deployed staging is manual and also runs inside the signed release workflow. A release stays in draft until the previous stable version upgrades to the exact signed candidate and passes its checks. Customer installations and updates verify the signed manifest and artifact digest before deployment.

Documentation

hqbase.io/docs is the public source for user and operator guides, product specifications, and maintainer procedures.

Contributing

Read the contribution guide before you open a pull request.

Security

To report a vulnerability, follow the private process in the security policy.

License

HQBase is available under the GNU Affero General Public License v3.0 only.

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