Agent setup guide
Use eSIM Grab in Gemini
Turn your AI into your personal eSIM search engine. Connect once, then compare current plans for one country or a multi-country trip.
MCP 0.9.1 · beta · Streamable HTTP
Read-only tools. No eSIM Grab account, API key or sign-in required.
MCP server URL: https://esimgrab.com/mcp
Use it on your phone
Connect custom apps on the Gemini website, then use them in the mobile app. Google currently limits this feature to US adults with a personal account, English and Keep Activity on. Availability depends on your account; eSIM Grab has not completed a Gemini connection test.
Connect eSIM Grab
- On gemini.google.com, open Settings → Connected Apps (or Personal Intelligence → Connected Apps), then Add a custom app.
- Enter the server URL above, choose Next and review the connection settings. This public server needs no eSIM Grab credentials. If the client requires authentication, do not invent credentials; explain that setup is unsupported.
- Finish the available setup, select the app with @ in a new chat and run the test request below. Confirm success only after a real MCP tool result.
Workspace policies may restrict custom connections. Reuse an existing connection when available. A custom connection is separate from a public directory listing.
Verify with a live search
Use eSIM Grab to compare Japan eSIM plans with at least 10 GB and 7 days of validity in USD. Show current prices, restrictions and source links. Tell me which tools you used.
The agent should resolve Japan, search current plans and report the returned result. Only call the connection ready after a real MCP tool call succeeds. A saved URL or web browsing alone does not verify MCP access. Empty results are valid; never invent an offer.
find_destinations → search_esim_plans
{ "search": "Japan" }{ "kind": "country", "slug": "japan", "currency": "USD", "dataMin": 10, "validityMin": 7 }Compare your trip
I will spend 7 days in Japan, then 3 days in South Korea. I need 5 GB in Japan and 2 GB in South Korea. Compare one plan for the whole trip with separate purchases in USD, and explain coverage, validity and data limits.
MCP exposes current catalog offers only. Historical prices remain proprietary. Tools cannot buy or activate an eSIM. eSIM Grab may earn a commission at no extra cost to you.
Detailed MCP documentation (English)