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Simsima Connectivity

io.github.Willyfab/simsima-connectivityWillyfabstreamable-httpv0.1.0Scanned

Search, recommend & buy travel eSIM data plans for 190+ destinations via AI agents.

7 tools: 3 change things and 4 only read.

Tools: 0 delete, 0 irreversible, 3 write, 4 read.
  • Reads private data · 0
  • Reads text others write · 1
  • Can send data out · 0
  • 1 finding

Tools listed without sign-in. Remote posture

Anlyon alternative

3 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.

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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 3Claude Code: ask
  • check_coverageAnswer "does this eSIM work in <country>" for a destination (country, region or global plan).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
    Answer "does this eSIM work in <country>" for a destination (country, region or global plan). Accepts a country name or ISO code.

    Annotations the server declares

    • title: Check whether a destination covers a country
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • recommend_planRecommend the best plan(s) for a trip to a destination, given its length in days and expected data usage (light, medium or heavy).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
    Recommend the best plan(s) for a trip to a destination, given its length in days and expected data usage (light, medium or heavy).

    Annotations the server declares

    • title: Recommend an eSIM plan
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 4Show 4 read-only tools
  • get_destination_infoCoverage (ISO country codes), mobile operators, top-up availability and entry price for a destination.No findings

    Why it is in this group

    • The name "get_destination_info" says "get": a word for reading.
    Description, as the server wrote it
    Coverage (ISO country codes), mobile operators, top-up availability and entry price for a destination.

    Annotations the server declares

    • title: Get destination coverage and networks
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_planGet one eSIM plan by its sku, as returned by search_plans or recommend_plan.No findings

    Why it is in this group

    • The name "get_plan" says "get": a word for reading.
    Description, as the server wrote it
    Get one eSIM plan by its sku, as returned by search_plans or recommend_plan.

    Annotations the server declares

    • title: Get eSIM plan detail
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • list_destinationsList the destinations Simsima covers (countries, regions and global plans), with the entry price and product URL of each.Reads text others writeNo findings

    Why it is in this group

    • The name "list_destinations" says "list": a word for reading.

    What it can reach

    • untrusted-inputThe description's first sentence says "list" and "url": it reads web pages, which anyone can write.
    Description, as the server wrote it
    List the destinations Simsima covers (countries, regions and global plans), with the entry price and product URL of each.

    Annotations the server declares

    • title: List eSIM destinations
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • search_plansSearch the eSIM plans of a destination (country, region or global), cheapest first, with optional filters on price, data, validity and unlimited data.No findings

    Why it is in this group

    • The name "search_plans" says "search": a word for reading.
    Description, as the server wrote it
    Search the eSIM plans of a destination (country, region or global), cheapest first, with optional filters on price, data, validity and unlimited data.

    Annotations the server declares

    • title: Search eSIM plans
    • 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 private-data or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write1
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.

Remote posture

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

Tools listed without sign-in

Looked at Oct 22, 2026, 14:55 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
3
Protocol version
2025-06-18
WWW-Authenticate on 401
not observed
resource_metadata in WWW-Authenticate
not observed
RFC 9728 protected resource metadata
not observed
Authorization servers
not observed
Legacy HTTP+SSE transport
no
Dynamic client registration
not observed
Client ID metadata documents
not observed
  • WarnThe whole server

    The endpoint served tools/list without credentials, and the list has 3 tools that change things (3 write). Whether a call also works without credentials was not tested: tools are never called.

    Matched text

    https://mcp.simsima.io/mcp: tools/list returned 7 tools to an anonymous client, including recommend_plan (write), create_checkout_link (write), check_coverage (write)

    What this check looks for

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warncreate_checkout_link

    The server marks "create_checkout_link" read-only (readOnlyHint: true), and its own name, description or input give the class "write".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The name "create_checkout_link" says "create": a word for a change.

    What this check looks for

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.

All changes to this server

Install

Pinned to version 0.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http simsima-connectivity https://mcp.simsima.io/mcp
claude mcp add --transport http simsima-connectivity https://mcp.simsima.io/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__simsima-connectivity__list_destinations",
      "mcp__simsima-connectivity__search_plans",
      "mcp__simsima-connectivity__get_plan",
      "mcp__simsima-connectivity__get_destination_info"
    ],
    "ask": [
      "mcp__simsima-connectivity__recommend_plan",
      "mcp__simsima-connectivity__create_checkout_link",
      "mcp__simsima-connectivity__check_coverage"
    ],
    "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 simsima-connectivity. Review it before you use it.

Capability tags behind 1 rule
  • mcp__simsima-connectivity__list_destinations 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/io.github.Willyfab/simsima-connectivity/verify?hash=2ac30e1f290e3e31660d4bd429c7639ff9962532849fddddcb0b118b5dec5f00" | jq -e '.changed == false'

Pinned hash 2ac30e1f290e, from Oct 21, 2026, 19:05 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/io.github.Willyfab/simsima-connectivity/changes.xml

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Badge

anlyon.dev badge for io.github.Willyfab/simsima-connectivity
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Source: MCP Registry · repository. Synced Oct 21, 2026, 18:22 UTC.