Prototype · Preview: every server in the official registry, synced every 30 minutes. Reviews and accounts come in a later step.
PopNx MCPMCP servers for people who use AI · explained in plain words

Solo MCP by usefulapi

by m190version 1.4.3i★ –iRuns in the cloud
Registry nameio.usefulapi/solo

Install

Overview

Description from the maker (original English)

Read invoices, offers, payment status and the product catalog in Solo.

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: Online shops & payments

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://solo.usefulapi.io/mcp

Run this in your terminal

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

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "solo": {
      "url": "https://solo.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": {
    "solo": {
      "type": "http",
      "url": "https://solo.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://solo.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.

  • solo_list_invoices

    List the last 1000 invoices (račun) of the Solo account: id, number, date, gross total, status and status colour. Use solo_get_invoice with an id for full details. Solo API: GET /racun.

  • solo_get_invoice

    Get one invoice with buyer, line items, taxes, totals, payment method, dates, IBAN, currency and a PDF link. The id is the long hash from solo_list_invoices. Solo API: GET /racun?id=.

  • solo_get_invoice_status

    Get the payment status of one invoice: status code, colour and the payment date (datum_uplate, empty if unpaid). Solo API: GET /status?id=.

  • solo_list_offers

    List the last 1000 offers (ponuda) of the Solo account: id, number, date, gross total, status. Use solo_get_offer for full details. Solo API: GET /ponuda.

  • solo_get_offer

    Get one offer with buyer, line items, taxes, totals, dates, currency and a PDF link. The id is the long hash from solo_list_offers. Solo API: GET /ponuda?id=.

  • solo_get_offer_status

    Get the status code and colour of one offer. Solo API: GET /status?id=.

  • solo_list_catalog

    List the products and services in the Solo catalog: code (sifra), KPD code, description, unit, quantity, price, discount and tax rate. Solo API: GET /katalog.

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 13 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 7 tool descriptions and found no hidden instructions to the AI

Compared with others in Online shops & paymentsi

  • More stars than 0% of the other 1742 servers in this category
  • Published to the registry more recently than 97% of the other 1742 servers in this category
  • Basic checks equal to or better than 100% of the other 1742 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 Solo 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 (1.4.3) 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: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

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

Stripe MCP

by stripe

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

Runs in the cloud★ 2,043MITUpdated 12 months ago
Install

MCP Cn Commerce

by TonyWang-hub

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

Runs on your computer★ 96MITUpdated 27 days 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.

Solo MCP by usefulapi

Use your Solo account from Claude, Cursor, or any MCP client. Read invoices, offers, payment status and the product catalog. Hosted, no local install: connect with your own credentials.

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

Connect

  • Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://solo.usefulapi.io/mcp.
  • Claude Code: claude mcp add --transport http solo https://solo.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": { "solo": { "url": "https://solo.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 Solo credentials.

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

On first connect you provide your Solo API token (Solo → Postavke / Settings → API token). The server validates it and stores it per user. No keys go in config files.

Tools

ToolTypeWhat it does
solo_list_invoicesreadList invoices
solo_get_invoicereadGet invoice
solo_get_invoice_statusreadGet invoice status
solo_list_offersreadList offers
solo_get_offerreadGet offer
solo_get_offer_statusreadGet offer status
solo_list_catalogreadList catalog
solo_usage_statusmetaUsage status (free-tier meter)
solo_request_featuremetaRequest a missing feature
solo_upgrademetaUpgrade to Pro or Pro+
solo_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 solo_upgrade (it returns a Stripe Checkout link). Cancel any time with solo_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running solo_upgrade before then undoes the cancel. Or write to support@usefulapi.io.

License

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

Ask PopNx