worldwide eSIM — one eSIM for the whole world
com.worldwideesim/esim-catalogworldwideesim.comstreamable-httpv3.0.0Scanned
One travel eSIM for 98 countries: live quotes by continent and GB, country check and a buy link.
7 tools: 5 change things and 2 only read.
- Reads private data · 1
- Reads text others write · 2
- Can send data out · 0
- 1 finding
Anlyon alternative
5 of these tools change something. Run those as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
7 tools
Changes things 5Claude Code: ask
check_countryIs one country included?No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Is one country included? Pass its name in any language or its ISO-2 code (map a city to its country first). Returns included true/false, the continent, the mobile networks (operator names + 5G flag) and the cheapest coverage choice that includes it (its continent alone) with the server price and buy_url, plus the whole world at the same size for comparison.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
price_gridEvery data size (or the sizes asked for) for one coverage choice in one call, each with the server price and its own buy_url; with compare_continents also the whole world against e…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Every data size (or the sizes asked for) for one coverage choice in one call, each with the server price and its own buy_url; with compare_continents also the whole world against each single continent — to show what a smaller coverage saves. Same server prices as quote_esim.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
quote_esimUse while the customer is still deciding — "how much is …?": the exact server price of ONE worldwide eSIM for the chosen continents (default: the whole world) and data size — the a…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Use while the customer is still deciding — "how much is …?": the exact server price of ONE worldwide eSIM for the chosen continents (default: the whole world) and data size — the amount the customer would pay — with the number of countries, the validity (until the data is used up, up to 180 days), hotspot, the recharge options and prices, and a buy_url for reference. Quote the price as returned; never compute or scale it. When the customer says they want to buy, call start_checkout.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
recommend_configUse when the customer names the countries of a trip instead of continents and a size: returns the smallest set of continents that covers every named country (countries that are not…No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it Use when the customer names the countries of a trip instead of continents and a size: returns the smallest set of continents that covers every named country (countries that are not included come back in not_covered), a suggested data size from the days and usage (light ≈ 0.5 GB/day, normal ≈ 1.5, heavy ≈ 4; rounded up to the next size) and server quotes for that size and one size down and up, each with its buy_url, plus the whole world at the suggested size. Same prices as quote_esim.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
start_checkoutUse only once the customer has decided to buy ("I'll take it", "how do I buy?"): the checkout handoff for one choice (same input as quote_esim).Reads text others write1 finding
Why it is in this group
- The name "start_checkout" says "start": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Findings
- Warn
The server marks "start_checkout" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "start_checkout" says "start": a word for a change.
Description, as the server wrote it Use only once the customer has decided to buy ("I'll take it", "how do I buy?"): the checkout handoff for one choice (same input as quote_esim). Returns the buy_url to give the customer, the final price and a ready-to-send checkout block (next_step, payment_methods, delivery) — the shop page opens preset to exactly this coverage and size; the customer presses "Get your eSIM" and pays securely. No account needed; the eSIM is delivered on screen and by e-mail right after payment. No in-chat order tracking, no discount codes. For prices while the customer is still comparing, use quote_esim.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
Only reads 2Show 2 read-only tools
get_shop_factsWhat worldwide eSIM is and how it works, in the shop’s own words: one mobile-data eSIM for the whole world or chosen continents, one data pool, validity (until the data is used up,…Reads private dataReads text others writeNo findings
Why it is in this group
- The name "get_shop_facts" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "mail": it reads mail.
- untrusted-inputThe description's first sentence says "mail": it reads inbound email, which other people can write.
Description, as the server wrote it What worldwide eSIM is and how it works, in the shop’s own words: one mobile-data eSIM for the whole world or chosen continents, one data pool, validity (until the data is used up, up to 180 days from the first connection), recharge, delivery, installation, devices, payment, refunds, My eSIM, e-mails, support. Use for any question that is not a price or a country.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
list_coverageThe five continents with their number of countries and the starting price of each (the smallest data size for that continent alone) plus the whole world.No findings
Why it is in this group
- The name "list_coverage" says "list": a word for reading.
Description, as the server wrote it The five continents with their number of countries and the starting price of each (the smallest data size for that continent alone) plus the whole world. Pass continent to list its countries (continent "world" lists every country); include_networks adds the operator names and a 5G flag per country. Use to show where the eSIM works.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged outbound.
- Reads private data1
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write2
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
- Warnstart_checkout
The server marks "start_checkout" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
What this check looks forMatched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "start_checkout" says "start": a word for a change.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 3.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http esim-catalog https://worldwideesim.com/wp-json/worldwideesim/mcpclaude mcp add --transport http esim-catalog https://worldwideesim.com/wp-json/worldwideesim/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__esim-catalog__get_shop_facts",
"mcp__esim-catalog__list_coverage"
],
"ask": [
"mcp__esim-catalog__check_country",
"mcp__esim-catalog__quote_esim",
"mcp__esim-catalog__price_grid",
"mcp__esim-catalog__recommend_config",
"mcp__esim-catalog__start_checkout"
],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as esim-catalog. Review it before you use it.
Capability tags behind 2 rules
- mcp__esim-catalog__get_shop_facts private-data, untrusted-input
- mcp__esim-catalog__start_checkout untrusted-input
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/com.worldwideesim/esim-catalog/verify?hash=88c5b53bf6f3b634d4f1c8423462aa1e1c9268cc8ad080e7a6c4e9e7c8b33b91" | jq -e '.changed == false'Pinned hash 88c5b53bf6f3, from Oct 28, 2026, 15:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.worldwideesim/esim-catalog/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.worldwideesim/esim-catalog)Source: MCP Registry. Synced Oct 28, 2026, 15:17 UTC.