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Sample Shop MCP server

by apitoagents · remote · local (npm) · no sign-in to list tools · v1.0.1 · published by GitHub user apitoagents

Sample shop MCP server: paginated search, idempotent orders, guarded cancellation. Four languages.

Deletes · 1Changes · 1
CompareRegistry entry

4 tools: 1 can delete or cancel things, 1 change things and 2 only read.

Scanned Oct 21, 2026

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

claude mcp add --transport http sample-shop https://demo.apitoagents.com/mcp

Tools

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

4 tools

Deletes or cancels 1Claude Code: deny
  • cancel_orderCancel an order that has not shipped.No findings

    Why it is in this group

    • The name "cancel_order" says "cancel": a word for removing or ending something.
    • The description says "cannot be undone".
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Cancel an order that has not shipped. This cannot be undone. Call it first with confirm=false to get the order details, show them to the user, and only after the user explicitly agrees call again with confirm=true.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: true
    • openWorldHint: false
Changes things 1Claude Code: ask
  • create_orderPlace an order for one product.No findings

    Why it is in this group

    • The name "create_order" says "create": a word for a change.
    Description, as the server wrote it
    Place an order for one product. Generate one random idempotencyKey per user request and reuse the same key if you retry after an error or timeout; the shop returns the original order instead of creating a duplicate. Confirm product and quantity with the user before calling. Returns the order with its id, status and total.

    Annotations the server declares

    • readOnlyHint: false
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
Only reads 2Claude Code: allow
  • get_productReturn the full details of one product by its id (for example p-1001).No findings

    Why it is in this group

    • The name "get_product" says "get": a word for reading.
    Description, as the server wrote it
    Return the full details of one product by its id (for example p-1001). Use search_products first if you only know a name.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: false
  • search_productsSearch the shop catalogue by phrase and optional category.No findings

    Why it is in this group

    • The name "search_products" says "search": a word for reading.
    Description, as the server wrote it
    Search the shop catalogue by phrase and optional category. Returns one page of up to `limit` products and a `nextCursor`; when nextCursor is not null, more results exist and you must say so rather than claiming the list is complete. Use get_product for full details of one item. This tool does not place orders.

    Annotations the server declares

    • readOnlyHint: 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 untrusted-input or outbound.

Reads private data0
Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write0
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.

Looked at Oct 22, 2026, 14:56 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
2
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
  • HighThe whole server

    The endpoint served tools/list without credentials, and the list has 2 tools that change things (1 destructive, 1 write). Whether a call also works without credentials was not tested: tools are never called.

    Matched text

    https://demo.apitoagents.com/mcp: tools/list returned 4 tools to an anonymous client, including cancel_order (destructive), create_order (write)

    What this check looks for

Install

Pinned to version 1.0.1. Values in angle brackets are yours to fill in.

claude mcp add --transport http sample-shop https://demo.apitoagents.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__sample-shop__search_products",
      "mcp__sample-shop__get_product"
    ],
    "ask": [
      "mcp__sample-shop__create_order"
    ],
    "deny": [
      "mcp__sample-shop__cancel_order"
    ]
  }
}

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 sample-shop. Review it before you use it.