# MyBestSim eSIM comparator Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## MyBestSim eSIM comparator

Compare prepaid travel eSIM plans by destination, data and trip length for international trips.

- Record: https://musedirectory.ai/connector/mybestsim-esim-comparator
- Category: Travel
- Developer: MyBestSim (https://mybestsim.com)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 932ms, checked 2026-10-29T12:46:03Z
- Endpoint: https://mcp.mybestsim.com/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-10-28T14:31:30Z)
- Source: Found in the official MCP Registry (com.mybestsim/esim-comparator) https://registry.modelcontextprotocol.io/v0/servers?search=com.mybestsim%2Fesim-comparator

Compares prepaid eSIM plans from multiple providers for travel to specific countries or multi-country trips. Shows data allowance, validity, price in USD and EUR, features like 5G and hotspot, promo codes, and links to purchase from providers.

Example request: "Find the cheapest eSIM with 10 GB for a two-week trip to Japan and South Korea."

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use MyBestSim eSIM comparator to help me. It is a free service with an MCP server at https://mcp.mybestsim.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- search_esim_plans: Use this when someone is choosing a travel eSIM or needs mobile data abroad for a given country or region, e.g. "cheapest eSIM for Japan", "10 GB for two weeks in Europe", "unlimited data in the USA". Returns a shortlist (up to 10, at most 2 per provider) from the MyBestSim compa
- plan_trip_esim: Use this when one trip visits SEVERAL countries or regions, e.g. "Japan then China", "two weeks in France, Italy and Spain", "Thailand, Vietnam and Cambodia in March". Pass EVERY stage in travel order, with the days spent in each when known (or totalDurationDays), and the data ne
- get_destination_overview: Use this when someone asks how much a travel eSIM costs in a country or region, what the average or typical price is, or how much choice there is, before comparing individual plans. Returns the number of plans and providers listed on the MyBestSim comparison page, typical prices 
- get_esim_plan: Use this when someone wants the detail of one plan returned by search_esim_plans or get_destination_overview: coverage (number of countries, region), features, validity and price. Needs the planId and the destination it was found under.

Screening checks:
- MCP handshake: pass (Answered in 307ms)
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.mybestsim.com, mybestsim.com not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (4 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (Domain registered 927 days ago)
- AI review of purpose and tool behavior: pass (No concerns)