Wherbi
com.wherbi/shoppingwherbi.comstreamable-httpv0.1.0Scanned
Find where to buy a product: the shops that sell it in your country, from European shopping sites.
5 tools: 2 change things and 3 only read.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 0
- 1 finding
Anlyon alternative
2 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.
5 tools
Changes things 2Claude Code: ask
best_dealsThe largest real price drops right now in the locale's market across the sites: a shop's price against its own lowest price of the 30 days before (never a shop's own "was" price), …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 The largest real price drops right now in the locale's market across the sites: a shop's price against its own lowest price of the 30 days before (never a shop's own "was" price), with the site, product page and shop link.
Annotations the server declares
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- readOnlyHint: true
- title: Best deals on every site
find_by_codeExact identity lookup on every site: a GTIN/EAN barcode, a manufacturer item number or a LEGO set number.1 finding
Why it is in this group
- The name "find_by_code" says "find": a word for reading.
- The input takes a statement or command to run (input.code), which can change anything it can reach.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
The server marks "find_by_code" 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":false}; The name "find_by_code" says "find": a word for reading.
Description, as the server wrote it Exact identity lookup on every site: a GTIN/EAN barcode, a manufacturer item number or a LEGO set number. Returns each site's matching product with its current shop offers in the locale's market (cheapest total first, each with its link) and the best price overall. Never a guess: no match means no site lists that exact product.
Annotations the server declares
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- readOnlyHint: true
- title: Best prices for a barcode
Only reads 3Show 3 read-only tools
compare_pricesShop prices of one product version side by side in the locale's market on the site that lists it (cheapest total first, out of stock last; price, shipping, stock, when checked and …No findings
Why it is in this group
- The name "compare_prices" says "compare": a word for reading.
Description, as the server wrote it Shop prices of one product version side by side in the locale's market on the site that lists it (cheapest total first, out of stock last; price, shipping, stock, when checked and the shop link), plus the same version's best price in that site's other markets.
Annotations the server declares
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- readOnlyHint: true
- title: Compare shop prices
list_sitesThe independent price-comparison sites this server searches (furniture and lighting, tools, toys, LEGO, board games, games, baby, pets, perfume, books, smart home and more): key, n…No findings
Why it is in this group
- The name "list_sites" says "list": a word for reading.
Description, as the server wrote it The independent price-comparison sites this server searches (furniture and lighting, tools, toys, LEGO, board games, games, baby, pets, perfume, books, smart home and more): key, name, what each covers, its markets and languages, its home page and its own MCP server for deeper questions (categories, brands, guides, toplists).
Annotations the server declares
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- readOnlyHint: true
- title: Sites in the network
search_productsSearch every site's catalogue at once for a product, brand or kind of product (typos are corrected per site).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 every site's catalogue at once for a product, brand or kind of product (typos are corrected per site). Returns products with their site, page URL, manufacturer list price and a summary of current shop offers in the locale's market (shops, buyable, lowest total incl. known shipping). Use compare_prices for the shops and their links.
Annotations the server declares
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
- readOnlyHint: true
- title: Search products on every site
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.
Findings
Matches of fixed checks, with the text they matched.
- Warnfind_by_code
The server marks "find_by_code" 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":false}; The name "find_by_code" says "find": a word for reading.
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 0.1.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http shopping https://wherbi.com/mcpclaude mcp add --transport http shopping https://wherbi.com/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__shopping__list_sites",
"mcp__shopping__search_products",
"mcp__shopping__compare_prices"
],
"ask": [
"mcp__shopping__find_by_code",
"mcp__shopping__best_deals"
],
"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 shopping. Review it before you use it.
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.wherbi/shopping/verify?hash=a7bb79961fad08058e9871b7a3aea7b858eb7627cce019cc9590b0c8fae4028c" | jq -e '.changed == false'Pinned hash a7bb79961fad, from Nov 3, 2026, 20:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/com.wherbi/shopping/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/com.wherbi/shopping)Source: MCP Registry. Synced Nov 3, 2026, 20:17 UTC.