Is the Amber's Slime Studio MCP server safe?

No scan can promise that. What its definitions show: 6 tools, 2 of which can change, send or delete something, and 2 findings from fixed checks. Allow the reads, ask before each change, and deny the deletes; the permissions block on this page does that.

Can the Amber's Slime Studio MCP server delete data?

No tool is classed as destructive: going by their definitions, none of them deletes, cancels or revokes anything.

Can the Amber's Slime Studio MCP server do things that cannot be undone?

No tool is classed as irreversible: none of them sends, pays, publishes or merges, going by their definitions.

What tools does the Amber's Slime Studio MCP server have?

6 tools: 2 write, 4 read. check_promo, create_basket_link, search_catalog, get_product, list_textures and get_shipping_options.

Does the Amber's Slime Studio MCP server need sign-in or OAuth?

Its remote endpoint listed its tools to an anonymous client, without sign-in.

Does the Amber's Slime Studio MCP server send data to outside services?

None of its tools sends, posts or publishes, or takes a recipient, channel or URL.

Has the Amber's Slime Studio MCP server changed its tools?

Not since anlyon.dev started tracking it. Last scanned Nov 10, 2026.

Amber's Slime Studio MCP server

uk.co.slime-studio/shopslime-studio.co.ukstreamable-httpv1.0.0Scanned 4 days ago

Browse handmade UK slime, check delivery and promo codes, and get a ready-filled basket link.

6 tools: 2 change things and 4 only read.

Reads private data · 1
Reads text others write · 1
Can send data out · 0
2 findings

Tools listed without sign-in. Remote posture

With Anlyon

2 tools here change things. Govern them.

Anlyon lists the tools and adopts none.
Each tool you adopt gets approvals and receipts.
Your agent never holds the key.

Govern this server →

A tool your agent calls directly is not routed through Anlyon and is not governed by it. anlyon.dev only lists and labels, and these labels are the same either way.

What the Amber's Slime Studio MCP server can do

The Amber's Slime Studio MCP server is published by slime-studio.co.uk, a domain the MCP Registry verified. It has 6 tools. It can create or change data (2 tools: check_promo and create_basket_link), but cannot delete data. 4 tools only read.

1 tool reads private data (get_shipping_options); 1 tool brings in text other people can write (get_shipping_options).

The fixed checks matched 2 findings (annotation-conflict). Each one comes with the text it matched.

Its remote endpoint lists its tools without sign-in.

Last scanned Nov 10, 2026, version 1.0.0.

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.

6 tools

Changes things 2Creates or changes something that can be changed back.Claude Code: ask

check_promoCheck whether a promo code applies to a basket of slimes (by slug and quantity) and estimate the saving.1 finding
Why it is in this group
- 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 "check_promo" 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 input takes a statement or command to run (input.code), which can change anything it can reach.
  What this check looks for
Description, as the server wrote it
Check whether a promo code applies to a basket of slimes (by slug and quantity) and estimate the saving. A rejected code returns valid=false with the shop's standard message; checkout always re-checks codes.
Annotations the server declares
- title: Check a promo code
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
create_basket_linkBuild a link to slime-studio.co.uk that opens the shopper's basket pre-filled with these slimes (and an optional promo code), with the subtotal and estimated standard delivery.1 finding
Why it is in this group
- The name "create_basket_link" says "create": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "create_basket_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_basket_link" says "create": a word for a change.
  What this check looks for
Description, as the server wrote it
Build a link to slime-studio.co.uk that opens the shopper's basket pre-filled with these slimes (and an optional promo code), with the subtotal and estimated standard delivery. Give the link to the shopper: they review the basket and pay on Stripe Checkout. Creates no order and needs no personal data. UK delivery only.
Annotations the server declares
- title: Create basket link
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 4Looks things up and changes nothing.Show 4 read-only tools

get_productFull details for one slime by slug or sku: description, features, ingredients, care instructions, FAQs, video, restock date, age guidance (3+), dispatch and returns policy.No findings
Why it is in this group
- The name "get_product" says "get": a word for reading.
Description, as the server wrote it
Full details for one slime by slug or sku: description, features, ingredients, care instructions, FAQs, video, restock date, age guidance (3+), dispatch and returns policy.
Annotations the server declares
- title: Get slime details
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
get_shipping_optionsUK delivery methods and prices for an order of item_count slimes (standard Royal Mail 48, express Royal Mail 24), the free-delivery threshold and dispatch times.Reads private dataReads text others writeNo findings
Why it is in this group
- The name "get_shipping_options" says "get": a word for reading.
What it can reach
- private-dataThe description's first sentence says "mail": it reads mail.
- untrusted-inputThe description's first sentence says "mail": it reads inbound email, which other people can write.
Description, as the server wrote it
UK delivery methods and prices for an order of item_count slimes (standard Royal Mail 48, express Royal Mail 24), the free-delivery threshold and dispatch times. Add a UK postcode to check the free local delivery area. The shop does not deliver outside the UK.
Annotations the server declares
- title: UK delivery options
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
list_texturesThe slime textures the shop makes (butter, cloud, icee, thick and glossy), each with how it feels, a description, its page and how many slimes are on sale.No findings
Why it is in this group
- The name "list_textures" says "list": a word for reading.
Description, as the server wrote it
The slime textures the shop makes (butter, cloud, icee, thick and glossy), each with how it feels, a description, its page and how many slimes are on sale. Use a slug as the texture filter in search_catalog.
Annotations the server declares
- title: List slime textures
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
search_catalogSearch Amber's Slime Studio's handmade slimes by words (name, scent, colour, charms), texture and maximum price.No findings
Why it is in this group
- The name "search_catalog" says "search": a word for reading.
Description, as the server wrote it
Search Amber's Slime Studio's handmade slimes by words (name, scent, colour, charms), texture and maximum price. Returns pots with price in GBP, stock, texture, scent, image and product URL, best matches first. Call with no arguments to list everything on sale.
Annotations the server declares
- title: Search slimes
- 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 data1: Reads files, mail, messages, databases, secrets, calendars or repositories.; get_shipping_options
Reads text others write1: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; get_shipping_options
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 11, 2026, 09:20 UTC, unchanged since Nov 11, 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: 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 2 tools that change things (2 write). Whether a call also works without credentials was not tested: tools are never called.
Matched text
https://mcp.slime-studio.co.uk/mcp: tools/list returned 6 tools to an anonymous client, including check_promo (write), create_basket_link (write)
What this check looks for

Findings

Matches of fixed checks, with the text they matched.

2 warn

Warncheck_promo
The server marks "check_promo" 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 input takes a statement or command to run (input.code), which can change anything it can reach.
What this check looks for
Warncreate_basket_link
The server marks "create_basket_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_basket_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 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http shop https://mcp.slime-studio.co.uk/mcp

claude mcp add --transport http shop https://mcp.slime-studio.co.uk/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__shop__search_catalog",
      "mcp__shop__get_product",
      "mcp__shop__list_textures",
      "mcp__shop__get_shipping_options"
    ],
    "ask": [
      "mcp__shop__check_promo",
      "mcp__shop__create_basket_link"
    ],
    "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 shop. Review it before you use it.

Capability tags behind 1 rule

mcp__shop__get_shipping_options private-data, untrusted-input

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/uk.co.slime-studio/shop/verify?hash=2b9c589af2a2830975031410b0741f2e0c5c67f04e2350782c10c58a761be0ac" | jq -e '.changed == false'

Pinned hash 2b9c589af2a2, from Nov 10, 2026, 16:18 UTC.

Watch

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

https://anlyon.dev/servers/uk.co.slime-studio/shop/changes.xml

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

Badge

[![anlyon.dev](https://anlyon.dev/badge/uk.co.slime-studio/shop.svg)](https://anlyon.dev/servers/uk.co.slime-studio/shop)

Source: MCP Registry. Synced Nov 10, 2026, 16:18 UTC.