# IMPOSSIBREW (remote · agent.impossibrew.co.uk)

UK alcohol-free beer: product facts, comparisons, stockists, Shopify basket links and order help.

- Trust score: 59/100 (low)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `agent.impossibrew.co.uk`: 59/100 (this document), [markdown](https://verifymcp.io/servers/uk-co-impossibrew-agent-beer-finder/mcp-registry.md), [page](https://verifymcp.io/servers/uk-co-impossibrew-agent-beer-finder/mcp-registry)

## Channel facts

- Endpoint: `https://agent.impossibrew.co.uk/mcp/registry`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.0.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-11-05.

- **Endpoint Security**: 63/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - Authorisation check failed: no authorisation is required to call this server, and it exposes a tool marked destructive (cancel_order).
  - HTTPS is enforced; there's no plaintext access path.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 44/100
  - 0% of prompts and resources have a non-trivial description (not blank, and not just the item's name).
  - AI-judged instruction clarity (good).
  - Context-footprint check failed: tool/resource definitions use about 3209 tokens (~103/item across 31 items; 24 tools + 7 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 1/100
  - Stability check failed: schema churn in the 3 days we've observed: 1 tool removals, 0 breaking changes, 0 auth/transport breaks, 12 additions.
- **Tool Coverage**: 67/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 0% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 24 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 26 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.
  - Supports UI / widget rendering.

## Install

### How do I install the IMPOSSIBREW MCP server?

IMPOSSIBREW is a hosted endpoint at https://agent.impossibrew.co.uk/mcp/registry, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add --transport http uk-co-impossibrew-agent-beer-finder 'https://agent.impossibrew.co.uk/mcp/registry'
```

### Cursor

```json
{
  "mcpServers": {
    "uk-co-impossibrew-agent-beer-finder": {
      "url": "https://agent.impossibrew.co.uk/mcp/registry"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "uk-co-impossibrew-agent-beer-finder": {
      "type": "http",
      "url": "https://agent.impossibrew.co.uk/mcp/registry"
    }
  }
}
```

### Codex

```toml
[mcp_servers.uk-co-impossibrew-agent-beer-finder]
url = "https://agent.impossibrew.co.uk/mcp/registry"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "uk-co-impossibrew-agent-beer-finder": {
      "type": "remote",
      "url": "https://agent.impossibrew.co.uk/mcp/registry",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add uk-co-impossibrew-agent-beer-finder --url 'https://agent.impossibrew.co.uk/mcp/registry' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  uk-co-impossibrew-agent-beer-finder:
    url: "https://agent.impossibrew.co.uk/mcp/registry"
```

### Netclaw

```json
{
  "McpServers": {
    "uk-co-impossibrew-agent-beer-finder": {
      "Transport": "http",
      "Url": "https://agent.impossibrew.co.uk/mcp/registry"
    }
  }
}
```

### Vellum

```bash
assistant mcp add uk-co-impossibrew-agent-beer-finder -t streamable-http -u 'https://agent.impossibrew.co.uk/mcp/registry'
```

### Other

```json
{
  "mcpServers": {
    "uk-co-impossibrew-agent-beer-finder": {
      "type": "http",
      "url": "https://agent.impossibrew.co.uk/mcp/registry"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-11-05 (score 59, +1)

- [functional] New tool “starter_bundles”
- [functional] New tool “where_to_buy”

### 2026-11-04 (score 58, 0)

- [security regression] Stability: 0.03 → fail
- [security regression] A breaking change shipped without a version bump: still 0.3.0
- [security regression] Tool “order_help” was removed
- [security] The server rewrote its instructions, which are the text every model session reads
- [security] New tool “cancel_order”, which the server declares destructive
- [security] New tool “cancel_subscription”, which the server declares destructive
- [security] New tool “change_delivery_address”, which the server declares destructive
- [security] Tool “build_basket” rewrote its description, which is the text the model reads
- [functional regression] Schema quality: pass → fail
- [functional] New tool “add_to_subscription”
- [functional] New tool “alcohol_free_guide”
- [functional] New tool “check_order”
- [functional] New tool “pause_subscription”
- [functional] New tool “report_order_problem”
- [functional] New tool “resume_subscription”
- [functional] New tool “skip_next_delivery”
- [cosmetic] Tool “compare_alternatives” changed its title: Why IMPOSSIBREW? → Compare with other brands

### 2026-11-03 (score 58, 0)

- [security] Tool “ask_impossibrew” rewrote its description, which is the text the model reads
- [security] Tool “browse_beers” rewrote its description, which is the text the model reads
- [security] Tool “build_basket” rewrote its description, which is the text the model reads
- [security] Tool “build_shop_link” rewrote its description, which is the text the model reads
- [security] Tool “compare_alternatives” rewrote its description, which is the text the model reads
- [security] Tool “compare_pack_value” rewrote its description, which is the text the model reads
- [security] Tool “find_stockists” rewrote its description, which is the text the model reads
- [security] Tool “get_product” rewrote its description, which is the text the model reads
- [security] Tool “open_shop” rewrote its description, which is the text the model reads
- [security] Tool “order_help” rewrote its description, which is the text the model reads
- [functional improvement] Stability: unverified → 0.03

### 2026-11-02 (score 58)

First indexed and scored.

## MCP tools (24)

### `open_shop` (~70 tokens)

Beer Finder

Opens the IMPOSSIBREW shop: a swipeable picker of every beer with its official pack shot, per-can price and the subscribe-and-save gift ladder. The customer picks boxes and taps Subscribe or Buy once to get a real Shopify basket. Takes no arguments. The picker supplies its own product images.

### `browse_beers` (~39 tokens)

Browse beers

Returns six featured IMPOSSIBREW beers with current exact-pack prices and availability. Not a full store catalogue.

Input parameters:

- `query` (string)

### `get_product` (~40 tokens)

Choose a beer

Returns product facts and the current exact variants, with variant IDs, for one beer. Variant IDs exist only in this result.

Input parameters:

- `id` (string, required)

### `compare_beers` (~50 tokens)

Compare our beers

Compare 2 to 4 specific IMPOSSIBREW beers: flavour, exact pack prices, availability and source descriptions. Nutrition/allergens remain specific to each label.

Input parameters:

- `ids` (array, required)

### `compare_alternatives` (~56 tokens)

Compare with other brands

Returns IMPOSSIBREW's published comparison pages for named alternative brands: our source-backed position, kept separate from independent proof. Live prices and availability for our beers come from the product tools.

Input parameters:

- `competitors` (array, required)

### `check_order` (~145 tokens)

Check my order

Read-only. Looks up the customer's own IMPOSSIBREW orders and subscription: order status, tracking, delivery dates, subscription details, next delivery and store credit. This tool cannot change, cancel or refund anything. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `cancel_order` (~152 tokens)

Cancel an order

Cancels one of the customer's IMPOSSIBREW orders that has not left the warehouse, with the refund the AI Brewer states. This tool makes no other change. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `change_delivery_address` (~146 tokens)

Change delivery address

Changes the UK delivery address of one IMPOSSIBREW order that has not left the warehouse. This tool makes no other change. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `skip_next_delivery` (~141 tokens)

Skip next delivery

Skips the next delivery of the customer's IMPOSSIBREW subscription. This tool makes no other change. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `pause_subscription` (~146 tokens)

Pause subscription

Pauses the customer's IMPOSSIBREW subscription for 1, 2 or 3 months. This tool makes no other change. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `resume_subscription` (~142 tokens)

Resume subscription

Resumes a paused IMPOSSIBREW subscription or restarts a cancelled one. This tool makes no other change. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `cancel_subscription` (~159 tokens)

Cancel subscription

Cancels the customer's IMPOSSIBREW subscription. Before cancelling, the AI Brewer may offer to keep it with a discount, a pause or a skip; only the option the customer accepts is applied. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `add_to_subscription` (~142 tokens)

Add to subscription

Adds an IMPOSSIBREW beer to every delivery of the customer's subscription. This tool makes no other change. The AI Brewer shows the exact change and makes it only after the customer replies yes. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `report_order_problem` (~152 tokens)

Report an order problem

Passes a damaged, missing, wrong or late IMPOSSIBREW order to the support team as a case, with any details the customer gives. It does not issue refunds, credits or replacements; the support team decides and replies by email. The message goes to the AI Brewer, the same assistant as on impossibrew.co.uk, which checks identity (email plus delivery postcode, or an order number starting EC plus either). message is the customer's own words. The first call has no conversationId; each result returns the conversationId that continues the same conversation across these order tools. The reply is the AI Brewer's complete answer.

Input parameters:

- `conversationId` (string)
- `message` (string, required)

### `ask_impossibrew` (~128 tokens)

Ask IMPOSSIBREW

Returns approved facts from the official IMPOSSIBREW policy, the same source as the AI Brewer on impossibrew.co.uk. Topics: dietary (gluten, vegan, allergens, carbs, sugar), nutrition, ingredients (Social Blend, ABV), safety (pregnancy, medication, driving, daily limit), delivery, freshness, returns, subscriptions, offers, where_to_buy, lab_points, contact. The facts are the complete approved answer; IMPOSSIBREW makes no health-effect, gluten-removal or medical claims beyond them.

Input parameters:

- `topic` (string, required)

### `alcohol_free_guide` (~263 tokens)

Alcohol-free guide

Answers common UK questions about alcohol-free drinks in general, with a named public source for every line (UK law, government guidance, the NHS, UK health charities, peer-reviewed studies or, for halal, published religious rulings; US labels use the US regulator, TTB; hangover uses the Irish health service, HSE). Topics: labels (what alcohol-free, 0.0%, de-alcoholised and 0.5% mean), units (how much alcohol is in 0.5%), everyday_foods (trace alcohol in juice and bread), driving, alcohol_testing (EtG tests for work, licences or recovery), pregnancy, breastfeeding, under_18, cutting_down, stopping_drinking, sleep, hydration, gout, diabetes, blood_pressure, liver, medication, halal, gluten_free, hangover, calories, price (why it is not cheaper; duty), how_made, dry_january, exercise, vegan, can_it_get_you_drunk, best_buy (which alcohol-free beer to buy; says IMPOSSIBREW publishes this guide), labels_abroad (US label rules). Not medical or legal advice; it says when 0.0% is the better choice.

Input parameters:

- `topic` (string, required)

### `build_box` (~112 tokens)

Build my box

Build a ready-to-review one-time IMPOSSIBREW basket from the customer's constraints: specific beers, gluten-free only, number of cans and/or budget in GBP. Uses fresh live prices and availability and returns exact lines, subtotal and a Shopify cart link. Does not create an order, take payment or start a subscription; checkout happens on impossibrew.co.uk.

Input parameters:

- `beers` (array)
- `budgetGBP` (number)
- `cans` (integer)
- `glutenFree` (boolean)

### `build_basket` (~212 tokens)

Build my basket

Creates a new anonymous IMPOSSIBREW Shopify cart for a one-time or subscription purchase (frequency) and returns its checkout link (Shop Pay or card on impossibrew.co.uk). The cart is not linked to any customer account. Suits any request to buy, order, try or subscribe. Subscriptions are cancel-any-time and, exactly like the website, earn welcome gifts by box count: 2 boxes 1 free glass, 3 boxes 2 glasses, 4 boxes 2 glasses plus a T-shirt. A T-shirt size (S-4XL) is needed only when the result says need_shirt_size. Prices, discounts and gifts are Shopify's exact live readback. A one-time result also shows the same beers on subscription, with the saving and gifts. It does not place an order or take payment: the customer completes checkout on impossibrew.co.uk.

Input parameters:

- `frequency` (string)
- `items` (array, required)
- `shirtSize` (string)

### `build_shop_link` (~99 tokens)

Continue to checkout

Constructs an exact Shopify cart permalink for 1 to 12 one-time item lines after checking current variants and availability. Returns a link only: it does not create a cart, order, payment or subscription, and it does not handle recurring purchases or existing orders. Shipping and discounts are determined at checkout. IMPOSSIBREW customer support for existing orders: https://impossibrew.co.uk/pages/contact-us.

Input parameters:

- `items` (array, required)

### `compare_pack_value` (~71 tokens)

Compare pack value

Compares available one-time IMPOSSIBREW packs using fresh store prices, with per-can and per-litre arithmetic. Rankings cover the same beer and can size only. It excludes delivery, checkout discounts and retailer prices, so it does not identify the cheapest overall deal.

Input parameters:

- `ids` (array)

### `find_stockists` (~68 tokens)

Where to buy

Returns online retailer buying destinations and verified UK venues, each with its source health. Retailer links are not live shelf-stock, delivery-coverage or price checks, and a listed venue does not prove current stock. Optional town/postcode text filters physical venues only.

Input parameters:

- `query` (string)

### `starter_bundles` (~88 tokens)

Starter bundles

Ready-made IMPOSSIBREW bundles for someone who wants to try a few beers or find the cheapest way in: live prices, can counts, price per can and a checkout link for each available bundle, cheapest first. Use this for "cheapest way to try", "sampler", "mixed pack" or "first order" questions; use build_box for a custom mix.

### `where_to_buy` (~111 tokens)

Where to buy

One answer to "where can I buy IMPOSSIBREW?". Give a UK town or postcode (optional) and it returns the best buying options in order: direct from impossibrew.co.uk, Zapp rapid delivery in London (also Zapp on Deliveroo and Uber Eats), Ocado, Amazon, and verified pubs, shops and venues nearby with distances. Only the outward part of a postcode is looked up. Retailer stock and prices are not checked live.

Input parameters:

- `location` (string)

### `product_mentions` (~40 tokens)

Mention a beer

Composer typeahead: return product resource links for matching IMPOSSIBREW beer names. Resource readback supplies live facts.

Input parameters:

- `query` (string, required)

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/uk-co-impossibrew-agent-beer-finder/mcp-registry#diagnostics

## Score history

- 2026-11-05: 59
- 2026-11-04: 58
- 2026-11-03: 58
- 2026-11-02: 58

## Common questions

### What is the IMPOSSIBREW MCP server?

IMPOSSIBREW is an MCP server listed in the public MCP registry as uk.co.impossibrew.agent/beer-finder. UK alcohol-free beer: product facts, comparisons, stockists, Shopify basket links and order help. This page covers its hosted endpoint (https://agent.impossibrew.co.uk/mcp/registry).

### Is the IMPOSSIBREW MCP server safe to use?

IMPOSSIBREW scores 59 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the IMPOSSIBREW MCP server expose?

IMPOSSIBREW exposes 24 tools: open_shop, browse_beers, get_product, compare_beers, compare_alternatives, and 19 more. Their descriptions and schemas cost roughly 2,772 tokens of context every time the server is loaded.

### Does the IMPOSSIBREW MCP server require authentication?

No. We connected to IMPOSSIBREW without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the IMPOSSIBREW MCP server still maintained?

IMPOSSIBREW is still listed as active in the MCP registry. We last reached this channel on 5 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

## Links

- Remote endpoint: https://agent.impossibrew.co.uk/mcp/registry
- Website: https://impossibrew.co.uk/
- Changelog RSS feed: https://verifymcp.io/servers/uk-co-impossibrew-agent-beer-finder/mcp-registry.xml
- Changelog JSON feed: https://verifymcp.io/servers/uk-co-impossibrew-agent-beer-finder/mcp-registry.json
- HTML version of this page: https://verifymcp.io/servers/uk-co-impossibrew-agent-beer-finder/mcp-registry