esimoa — travel eSIM comparison

by esimoa.com · remote · no sign-in to list tools · v1.1.0 · published by com.esimoa

Compare travel eSIM plans by country, days and data — live prices and links to buy on esimoa.

Read only

Compare Registry entry

6 tools: 6 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone0Claude Code: ask
Changes things0Claude Code: ask
Only reads6Claude Code: allow: see these tools

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http esim https://api.esimoa.com/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

6 tools

Only reads 6Looks things up and changes nothing.Claude Code: allow

compare_esimsCompare 2 to 5 esimoa (이심모아) eSIM plans side by side by id (ids come from search_esims): price, data, validity, price per GB, coverage, network, hotspot and local phone number.No findings
Why it is in this group
- The name "compare_esims" says "compare": a word for reading.
Description, as the server wrote it
Compare 2 to 5 esimoa (이심모아) eSIM plans side by side by id (ids come from search_esims): price, data, validity, price per GB, coverage, network, hotspot and local phone number. Returns which plan has the lowest price, most data, longest validity and lowest price per GB, and each plan page `url` on esimoa.com. Prices are in KRW.
Annotations the server declares
- title: Compare eSIM plans side by side
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
fetchFetch one esimoa (이심모아) eSIM plan as a document by id returned from search (ChatGPT deep research format).Reads private dataReads text others writeNo findings
Why it is in this group
- The name "fetch" says "fetch": a word for reading.
What it can reach
- private-dataThe description's first sentence says "fetch" and "document": it reads documents.
- untrusted-inputThe description's first sentence says "fetch" and "chat": it reads messages, which other people can write.
Description, as the server wrote it
Fetch one esimoa (이심모아) eSIM plan as a document by id returned from search (ChatGPT deep research format). For plans found with search_esims, use get_esim.
Annotations the server declares
- title: Fetch an esimoa eSIM
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_esimGet the details of one esimoa (이심모아) eSIM plan by id (from search_esims), including its plan page `url`.Reads text others writeNo findings
Why it is in this group
- The name "get_esim" says "get": a word for reading.
What it can reach
- untrusted-inputThe description's first sentence says "get" and "url": it reads web pages, which anyone can write.
Description, as the server wrote it
Get the details of one esimoa (이심모아) eSIM plan by id (from search_esims), including its plan page `url`.
Annotations the server declares
- title: Get eSIM plan details
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
list_countriesList countries where esimoa (이심모아) sells eSIMs, with the number of plans and the lowest price (KRW).No findings
Why it is in this group
- The name "list_countries" says "list": a word for reading.
Description, as the server wrote it
List countries where esimoa (이심모아) sells eSIMs, with the number of plans and the lowest price (KRW). Optionally filter by name.
Annotations the server declares
- title: List eSIM destinations
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
searchFree-text search of esimoa (이심모아) eSIM plans in the search/fetch format used by ChatGPT deep research, e.g.Reads private dataReads text others writeNo findings
Why it is in this group
- The name "search" says "search": a word for reading.
What it can reach
- private-dataThe description's first sentence says "chat": it reads messages.
- untrusted-inputThe description's first sentence says "chat": it reads messages, which other people can write.
Description, as the server wrote it
Free-text search of esimoa (이심모아) eSIM plans in the search/fetch format used by ChatGPT deep research, e.g. "Japan 7 days unlimited" or "USA 3 days local phone number". Understands unlimited, daily, local phone number, local network, hotspot and 5G. Returns ids to use with fetch. When you can fill filters, prefer search_esims.
Annotations the server declares
- title: Search esimoa eSIMs
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
search_esimsSearch the travel eSIM catalog of esimoa (이심모아) and compare plans for a destination.No findings
Why it is in this group
- The name "search_esims" says "search": a word for reading.
Description, as the server wrote it
Search the travel eSIM catalog of esimoa (이심모아) and compare plans for a destination. Filter by trip length, data, unlimited or daily data, local phone number, local or roaming network, multi-country coverage, price, provider, hotspot and 5G. Sort by "recommended" (esimoa’s default order), "price" (lowest first), "data" (most data first), "price_per_gb" or "validity" (longest first). Each result includes its `id` (for get_esim and compare_esims) and a `url` to the plan page on esimoa.com. Prices are in KRW.
Annotations the server declares
- title: Search & compare travel eSIMs
- 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 data2: Reads files, mail, messages, databases, secrets, calendars or repositories.; fetch
search
Reads text others write3: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; fetch
get_esim
search
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.

Remote posture

What anyone on the internet sees at the remote endpoint: an anonymous initialize and tools/list, and the public OAuth metadata.

Looked at Oct 22, 2026, 14:31 UTC, unchanged since Oct 22, 2026. No credentials were sent and no tool was called. What is looked at.

Reachable: yes
HTTP status of an anonymous initialize: 200
tools/list served without credentials: yes
Tools that change things, listed without credentials: 0
Protocol version: 2025-06-18
WWW-Authenticate on 401: not observed
resource_metadata in WWW-Authenticate: none
RFC 9728 protected resource metadata: none
Authorization servers: none
Legacy HTTP+SSE transport: no
Dynamic client registration: not observed
Client ID metadata documents: not observed

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http esim https://api.esimoa.com/mcp

Run 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.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__esim__search_esims",
      "mcp__esim__get_esim",
      "mcp__esim__compare_esims",
      "mcp__esim__list_countries",
      "mcp__esim__search",
      "mcp__esim__fetch"
    ],
    "ask": [],
    "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. Review it before you use it.

Capability tags behind 3 rules

mcp__esim__get_esim untrusted-input
mcp__esim__search private-data, untrusted-input
mcp__esim__fetch private-data, untrusted-input

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.esimoa/esim/changes.xml

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Source: MCP Registry · repository. Synced Oct 21, 2026, 17:54 UTC.

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