Skip to content
anlyon.devby Anlyon

OffWeGoSIM

io.github.athahar/offwegosimathaharstreamable-httpv1.0.0Scanned

Search travel eSIM plans, compare current USD prices, and get checkout links. No API key required.

3 tools: 3 only read.

Tools: 0 delete, 0 irreversible, 0 write, 3 read.
  • Reads private data · 0
  • Reads text others write · 3
  • Can send data out · 0
  • No findings

Tools listed without sign-in. Remote posture

Anlyon alternative

Run the operations that matter 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 →
Compare with similar serversMarkdownJSONReport this listing

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.

3 tools

Only reads 3Show 3 read-only tools
  • get_planRead current public details for a plan ID returned by search_plans.Reads text others writeNo findings

    Why it is in this group

    • The name "get_plan" says "get": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Read current public details for a plan ID returned by search_plans. Unavailable or withdrawn plans return an error.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
  • search_plansFind prepaid travel eSIM data plans by two-letter ISO destination code.Reads text others writeNo findings

    Why it is in this group

    • The name "search_plans" says "search": a word for reading.

    What it can reach

    • untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
    Description, as the server wrote it
    Find prepaid travel eSIM data plans by two-letter ISO destination code. Prices are USD. Country-only plans are preferred; regional bundles are a fallback. No order or payment is created.

    Annotations the server declares

    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true

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 write3
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 Nov 4, 2026, 02:19 UTC, unchanged since Nov 4, 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
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

Findings

Matches of fixed checks, with the text they matched.

No check matched anything in these tool definitions. That is not a safety guarantee.

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 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http offwegosim https://offwegosim.com/mcp
claude mcp add --transport http offwegosim https://offwegosim.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__offwegosim__search_plans",
      "mcp__offwegosim__get_plan",
      "mcp__offwegosim__get_checkout_link"
    ],
    "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 offwegosim. Review it before you use it.

Capability tags behind 3 rules
  • mcp__offwegosim__search_plans untrusted-input
  • mcp__offwegosim__get_plan untrusted-input
  • mcp__offwegosim__get_checkout_link 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.athahar/offwegosim/verify?hash=f97a1272e542e7f4629bd1ef15fc4495862c09b1602fff293b91c0ba35d63a81" | jq -e '.changed == false'

Pinned hash f97a1272e542, from Nov 4, 2026, 02:18 UTC.

Watch

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

https://anlyon.dev/servers/io.github.athahar/offwegosim/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

anlyon.dev badge for io.github.athahar/offwegosim
[![anlyon.dev](https://anlyon.dev/badge/io.github.athahar/offwegosim.svg)](https://anlyon.dev/servers/io.github.athahar/offwegosim)

Source: MCP Registry. Synced Nov 4, 2026, 02:17 UTC.