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

Zadarma MCP by usefulapi

by m190version 1.1.3i★ –iRuns in the cloud
Registry nameio.usefulapi/zadarma

Install

Overview

Description from the maker (original English)

Read balance, tariffs, SIP and PBX status and call logs; send SMS in Zadarma.

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: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 12 things (tools) zadarma_get_balance, zadarma_get_tariff, zadarma_get_call_price, zadarma_list_sip_numbers …
  • 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://zadarma.usefulapi.io/mcp

Run this in your terminal

claude mcp add --transport http zadarma https://zadarma.usefulapi.io/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "zadarma": {
      "url": "https://zadarma.usefulapi.io/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": {
    "zadarma": {
      "type": "http",
      "url": "https://zadarma.usefulapi.io/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://zadarma.usefulapi.io/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 6, 2026. The maker wrote them, not us; we show them as plain text.

  • zadarma_get_balance

    Get the current account balance and its currency. Good first call to check the account works. Zadarma API: GET /v1/info/balance/.

  • zadarma_get_tariff

    Get the account's current price plan (tariff). Zadarma API: GET /v1/tariff/.

  • zadarma_get_call_price

    Get the per-minute call rate in the account's price plan for one phone number (destination, prefix and currency). Zadarma API: GET /v1/info/price/.

  • zadarma_list_sip_numbers

    List the SIP numbers (IDs, names and status) on the account. Zadarma API: GET /v1/sip/.

  • zadarma_get_sip_status

    Check whether one SIP number is online. Zadarma API: GET /v1/sip/{sip}/status/.

  • zadarma_list_pbx_extensions

    List the extensions of the cloud PBX (number, name and settings). Zadarma API: GET /v1/pbx/internal/.

  • zadarma_get_pbx_extension_status

    Check whether one PBX extension is online. Zadarma API: GET /v1/pbx/internal/{pbxsip}/status/.

  • zadarma_list_virtual_numbers

    List the virtual (direct) phone numbers rented on the account. Zadarma API: GET /v1/direct_numbers/.

  • zadarma_get_call_statistics

    Get the call log for a period, optionally for one SIP number. Limited to 3 calls per minute per user: do not poll it. For live PBX data, use webhooks instead. Zadarma API: GET /v1/statistics/.

  • zadarma_get_call_recording_link

    Get a temporary download link for a call recording. Give the call_id (from the recording file name) or the pbx_call_id. Zadarma API: GET /v1/pbx/record/request/.

  • zadarma_list_sms_templates

    List the SMS templates on the account, by category. Zadarma API: GET /v1/sms/templates/.

  • zadarma_send_sms

    Send an SMS to up to 10 phone numbers. This sends real messages and uses account balance; each send is billed. It is not retried, so check the result before sending again. Zadarma API: POST /v1/sms/send/.

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 against the domain usefulapi.io (the registry checks domain ownership)

  • … 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 48 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 1766 servers in this category
  • Published to the registry more recently than 97% of the other 1766 servers in this category
  • Basic checks equal to or better than 100% of the other 1766 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 Zadarma MCP by usefulapi 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 (1.1.3) reached the registry yesterday.

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 31 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.

Zadarma MCP by usefulapi

Use your Zadarma account from Claude, Cursor, or any MCP client. It reads your balance, price plan, call rates, SIP and PBX status, virtual numbers and call logs, and it can send an SMS. Hosted, no local install: connect with your own credentials.

Live endpoint: https://zadarma.usefulapi.io/mcp · Homepage: https://usefulapi.io

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://zadarma.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http zadarma https://zadarma.usefulapi.io/mcp, then run /mcp to log in.
  • VS Code: Add to VS Code.
  • Cursor and other clients: add the URL as a remote MCP server:
{

"mcpServers": { "zadarma": { "url": "https://zadarma.usefulapi.io/mcp" } } }

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your Zadarma credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/zadarma/

On first connect you provide your Zadarma API key and secret key (my.zadarma.com → API). The server validates it and stores it per user. No keys go in config files.

Tools

ToolTypeWhat it does
zadarma_get_balancereadGet account balance
zadarma_get_tariffreadGet price plan
zadarma_get_call_pricereadGet call rate for a number
zadarma_list_sip_numbersreadList SIP numbers
zadarma_get_sip_statusreadGet SIP number status
zadarma_list_pbx_extensionsreadList PBX extensions
zadarma_get_pbx_extension_statusreadGet PBX extension status
zadarma_list_virtual_numbersreadList virtual numbers
zadarma_get_call_statisticsreadGet call statistics
zadarma_get_call_recording_linkreadGet call recording link
zadarma_list_sms_templatesreadList SMS templates
zadarma_send_smswriteSend SMS
zadarma_usage_statusmetaUsage status (free-tier meter)
zadarma_request_featuremetaRequest a missing feature
zadarma_upgrademetaUpgrade to Pro or Pro+
zadarma_cancel_subscriptionmetaCancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

PlanPriceLimit
Free$050 tool calls / month
Pro (per user)$9/mo or $90/yr (2 months free)Unlimited*

\*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to support@usefulapi.io.

Pro covers this server only. Subscribe with zadarma_upgrade (it returns a Stripe Checkout link). Cancel any time with zadarma_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running zadarma_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

License

MIT — see LICENSE. Documentation only; the server is hosted.

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