# WEM Price Compare (remote · wem3.ai)

Price comparison across partner retailers. Read-only, 90-day history, disclosed affiliate.

- Trust score: 72/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-17

## Components

- remote · `wem3.ai`: 72/100 (this document), [markdown](https://verifymcp.io/servers/ai-wem3-wem-price-compare/api-mcp.md), [page](https://verifymcp.io/servers/ai-wem3-wem-price-compare/api-mcp)

## Channel facts

- Endpoint: `https://wem3.ai/api/mcp`
- 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 2026-08-17.

- **Endpoint Security**: 80/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - 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**: 76/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 913 tokens (~130/item across 7 items; 7 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 10/100
  - Stability observed for 3 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Capabilities**: 60/100
  - Spec-recency check failed: implements MCP spec 2025-06-18; the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add --transport http ai-wem3-wem-price-compare https://wem3.ai/api/mcp
```

### Codex

```toml
[mcp_servers.ai-wem3-wem-price-compare]
url = "https://wem3.ai/api/mcp"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ai-wem3-wem-price-compare": {
      "type": "remote",
      "url": "https://wem3.ai/api/mcp",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add ai-wem3-wem-price-compare --url https://wem3.ai/api/mcp --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  ai-wem3-wem-price-compare:
    url: "https://wem3.ai/api/mcp"
```

### Other

```json
{
  "mcpServers": {
    "ai-wem3-wem-price-compare": {
      "type": "http",
      "url": "https://wem3.ai/api/mcp"
    }
  }
}
```

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.

### 2026-08-17 (score 72, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-15 (score 71, +1)

- [functional improvement] Stability: unverified → 0.03

### 2026-08-14 (score 70)

First indexed and scored.

## MCP tools (7)

### `search_products` (~249 tokens)

Search for products across all connected marketplaces (eBay, Amazon, Awin merchants, etc.) using keywords. Returns a list of matching products with prices, images, and affiliate links. Best for specific keyword searches like "airpods pro" or "nike running shoes". When the query names a product in WEM's own catalogue, a `catalogMatch` block is also returned: its offers are identity-resolved rather than title-matched, so prefer them and cite its prices over anything in `products`. Weak matches are withheld and tallied by reason in `filtered` — report that count rather than implying the search was exhaustive.

Input parameters:

- `category` (string): Filter by category (electronics, fashion, beauty, home, sports, collectibles)
- `limit` (number): Max results to return (default 10, max 30)
- `max_price` (number): Maximum price filter (GBP)
- `min_price` (number): Minimum price filter (GBP)
- `providers` (array): Limit to specific providers (e.g. ["ebay", "awin"]). Omit for all.
- `query` (string, required): Search keywords
- `sort_by` (string): Sort order for results

### `semantic_search` (~127 tokens)

Search for products using natural language descriptions. Uses AI embeddings for semantic understanding — handles vague requests like "comfortable shoes for standing all day" or "gift for a 10 year old who likes science". Falls back to keyword search when vector data is unavailable.

Input parameters:

- `category` (string): Optional category filter
- `description` (string, required): Natural language description of what the user is looking for
- `limit` (number): Max results (default 10, max 20)
- `max_price` (number): Maximum price (GBP)
- `min_price` (number): Minimum price (GBP)

### `get_product` (~64 tokens)

Get full details for a specific product by its provider and ID. Use after search results to get more info before recommending.

Input parameters:

- `product_id` (string, required): Product ID from search results
- `provider` (string, required): Provider name (e.g. "ebay", "awin")

### `compare_products` (~59 tokens)

Compare 2-5 products side by side. Returns a structured comparison of price, rating, shipping, and key features. Use when the user is deciding between options.

Input parameters:

- `products` (array, required): List of products to compare (2-5 items)

### `find_best_deal` (~159 tokens)

Find the single best product matching constraints. Ranks by value (price vs rating vs shipping). Use when the user wants a recommendation rather than a list. Candidates are filtered to plausible matches for the query first, so a cheap accessory cannot be returned as the cheapest way to buy the product itself; `recommendation` may be null with a reason when nothing matched confidently, and that must be reported as "no confident match" rather than softened into a suggestion. `recommendation.verified` marks an offer whose identity WEM has resolved rather than inferred.

Input parameters:

- `max_price` (number): Budget cap (GBP)
- `priorities` (array): What matters most (in order of importance)
- `query` (string, required): What to search for

### `compare_offers` (~159 tokens)

Exact multi-retailer offers for one product from WEM's own catalogue, cheapest first, with a 90-day price-history low. Identity is resolved by barcode or catalogue slug — no text matching — so every offer IS the product, and the lookup spends no retailer API quota. Use this FIRST when you have a barcode (EAN/UPC/GTIN) or a wem3.ai/pl/{slug} URL; fall back to search_products when the product is not in the catalogue yet.

Input parameters:

- `gtin` (string): Product barcode: EAN-13, UPC-A, EAN-8 or GTIN-14. Preferred key.
- `slug` (string): WEM canonical product slug, as in wem3.ai/pl/{slug}.

### `get_categories` (~31 tokens)

Get available product categories and the approximate price range for each. Use to guide the user when their request is vague.

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/ai-wem3-wem-price-compare/api-mcp#diagnostics

## Score history

- 2026-08-17: 72
- 2026-08-16: 71
- 2026-08-15: 71
- 2026-08-14: 70

## Links

- Remote endpoint: https://wem3.ai/api/mcp
- Website: https://wem3.ai/extension/ai
- Changelog RSS feed: https://verifymcp.io/servers/ai-wem3-wem-price-compare/api-mcp.xml
- Changelog JSON feed: https://verifymcp.io/servers/ai-wem3-wem-price-compare/api-mcp.json
- HTML version of this page: https://verifymcp.io/servers/ai-wem3-wem-price-compare/api-mcp