# Supplementscanner

> Live supplement prices per kg, serving or capsule from Dutch and Belgian stores. Free, no API key.

- name: io.github.supplementscanner/scanner
- version: 1.1.0
- connection class: R0 (autonomous)
- trust: 97/100
- quality: 87/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/io.github.supplementscanner%2Fscanner
- tools: https://api.protogrid.dev/v1/servers/io.github.supplementscanner%2Fscanner/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "scanner": {
      "type": "http",
      "url": "https://mcp.supplementscanner.eu"
    }
  }
}
```


## Trust

- hygiene: 100
- liveness: 99
- freshness: 100
- provenance: 90
- drivers: +repository +namespace-matches-repo +website +reachable +uptime-96% +updated-7d-ago
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 87/100 (new)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 86 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 4 of 4 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_product (destructiveHint); search_products (destructiveHint); list_categories (destructiveHint); …
- pass `tools.token_cost`: about 900 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`: tool history recorded for 6 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: deps.dev does not know supplementscanner-mcp@1.1.0

- tools: 4, about 900 tokens to load them all
- tool set hash: 8c84f18e8955d45018b4b978d120db5b
- tools last changed: 2026-10-18T16:18:00.565Z
- badge: [![protogrid quality](https://protogrid.dev/badge/io.github.supplementscanner/scanner.svg)](https://protogrid.dev/servers/io.github.supplementscanner/scanner)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

- 2026-10-18 `get_product` changed (inputSchema)
- 2026-10-18 `list_categories` changed (inputSchema)
- 2026-10-18 `search_products` changed (inputSchema)
- 2026-10-18 `find_cheapest` changed (inputSchema)

Full history: https://api.protogrid.dev/v1/servers/io.github.supplementscanner%2Fscanner/changes

## Dependencies

- npm supplementscanner-mcp@1.1.0: unknown

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0.

## Remotes

- https://mcp.supplementscanner.eu (streamable-http, auth none, reachable true, uptime30d 0.962963)

## Packages

- npm supplementscanner-mcp@1.1.0

## Tools (4)

- `find_cheapest`: Find the cheapest supplements by normalized price-per-unit within a category (and all its subcategories). This is the primary tool for "what is the cheapest X?" questions. Use list_categories first to pick a valid category_slug.
- `get_product`: Get full detail for one product by its id: price, normalized unit price, size, bulk/staffel tiers, buy link, and recent price history. Use the id returned by find_cheapest or search_products.
- `list_categories`: List the supplement categories that currently hold priced products, each with a live product count, store count, lowest normalized unit price, and its comparison basis (per_kg / per_serving / per_capsule). Use this to discover a valid category_slug for find_cheapest.
- `search_products`: Search the whole supplement catalog by product name or brand. Typo-tolerant (e.g. "kreatine", "theanin" still match). Results are ordered by relevance, then cheapest normalized price-per-unit. Use find_cheapest instead when you already know the category.