Who it is for
Anyone topping up a prepaid mobile number abroad, or paying to keep a relative's line in credit in another country.
Mobile top-up ordering across supported countries
Overview
doctorSIM Mobile Topups handles prepaid mobile credit purchases from inside a ChatGPT conversation. The app lists the countries it covers, identifies mobile carriers, and shows top-up prices, so options can be weighed before anything is bought. Browsing and price comparison happen in chat, as does the order itself.
An order total is shown for review before the order is confirmed. Once it has been placed, the status of that order can be looked up again in the same conversation.
Payment depends on the type of account. Standard accounts settle through a payment link hosted on doctorsim.com, while PRO accounts have the option of debiting prepaid credit held with doctorSIM instead.
Anyone topping up a prepaid mobile number abroad, or paying to keep a relative's line in credit in another country.
Two payment paths exist rather than one: a hosted payment link for standard accounts, prepaid credit for PRO accounts.
Availability
doctorSIM Mobile Topups is listed in the ChatGPT apps directory only. doctorSIM has no connector under the same domain in the Claude directory; 392 of the 3,150 products here are on both marketplaces, and this is not one of them.
ChatGPT apps are built on MCP, and the same server can back a Claude connector, so the absence is a distribution decision rather than a technical one.
ChatGPT listing
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This is an independent catalogue entry compiled by Node8 from doctorSIM Mobile Topups's public marketplace listing as it stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with doctorSIM, and inclusion here is not an endorsement.
Node8 builds MCP servers end to end: deciding which tools are worth exposing, the authentication and permission model, the review submissions, and the onboarding that gets them used. One server serves ChatGPT, Claude, and Microsoft Copilot.