wovitamine.de Preisvergleich
Server Details
Deutscher Preisvergleich für Vitamine – Bestpreis-Suche (read-only).
- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP
- URL
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Tool Definition Quality
Average 4.1/5 across 2 of 2 tools scored.
The two tools have clearly distinct purposes: lookup_product retrieves details for a specific product, while search_offers finds products matching user criteria. No overlap.
Both tools use a consistent verb_noun pattern (lookup_product, search_offers) with snake_case, making the naming predictable and clear.
With only two tools, the server is minimal. While it covers the core search and lookup workflow, the scope feels limited for a price comparison domain that could benefit from additional tools like browsing categories or comparing products.
The tools cover the fundamental operations of searching for products and looking up details, but lack features like category listing, price history over custom periods, or product comparison, which are common in price comparison domains.
Available Tools
2 toolslookup_productProdukt auf wovitamine.de per ID/URL nachschlagenARead-onlyIdempotentInspect
Schlaegt ein konkretes Produkt im aktuellen wovitamine.de-Katalog per Produkt-ID (Amazon-ASIN bzw. externalId aus search_offers) ODER per Amazon-Produkt-URL nach. Liefert Bestpreis, 30-Tage-Preisstatistik und den Angebots-Link. Genau eines der Felder id/url angeben. Looks up a specific product in the wovitamine.de catalog by ID (ASIN/externalId) or Amazon product URL (read-only).
| Name | Required | Description | Default |
|---|---|---|---|
| id | No | Produkt-ID: Amazon-ASIN oder externalId. | |
| url | No | Amazon-Produkt-URL (z.B. https://www.amazon.de/dp/B0ABC123DE) — die ASIN wird extrahiert. |
Output Schema
| Name | Required | Description |
|---|---|---|
| site | No | |
| count | Yes | |
| query | No | |
| facets | No | Verfuegbare Filter-Werte (Marke + domain-spezifische Attribute) mit Trefferzahlen — zum gezielten Nachfiltern via query/brand/minPrice/maxPrice. |
| products | Yes | |
| updatedAt | No | |
| disclosure | No | |
| catalogVersion | No |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare read-only, idempotent, non-destructive. The description adds that it returns best price and statistics but does not go beyond what annotations provide for behavioral traits. No contradictions.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is bilingual with some redundancy (German and English say similar things). It could be more concise by keeping only one language. The structure is functional but not optimized.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the presence of an output schema (not shown), the description sufficiently covers purpose, parameters, exclusivity, and return value hints. It does not need to detail return structure.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema coverage is 100%, and the description adds the key constraint that exactly one of 'id' or 'url' must be given, which is not in the schema. It also clarifies that 'id' is ASIN/externalId and 'url' extracts the ASIN.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool looks up a specific product by ID or URL, returning best price, 30-day price statistics, and offer link. It distinguishes itself from the sibling tool 'search_offers' by specifying a concrete lookup rather than a search.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
It explicitly specifies that exactly one of 'id' or 'url' must be provided, and describes the URL format. It implies use when you have a specific product identifier, but does not explicitly compare with the sibling tool or state when not to use.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_offersVitamine in Deutschland zum Bestpreis finden (Amazon, eBay, AliExpress)ARead-onlyIdempotentInspect
Findet Vitamine zum guenstigsten aktuellen Preis in Deutschland (EUR) ueber Amazon, eBay und AliExpress — Preisvergleich wovitamine.de. Nutze dieses Tool, wenn ein Nutzer nach Preis, Angebot, "guenstig", "wo kaufen" oder einem konkreten Vitaminpräparat fragt. Durchsucht ~150 Produkte, filterbar per Suchbegriff, Marke und Preisspanne. Liefert je Produkt: Titel, Bestpreis, Marke, Bild, 30-Tage-Preistrend (priceStats.isLowest30d = aktuell guenstigster Stand), domain-spezifische Attribute (attributes, z.B. Leistung/Speicher/Farbe), einen direkten Kauf-Link (url) und eine zitierfaehige Produktseite (detailUrl). Die Antwort enthaelt zusaetzlich facets (verfuegbare Filterwerte) zum Verfeinern. Read-only, Kauf beim verlinkten Haendler (Affiliate, Preis unveraendert). Finds the cheapest current price in Germany for Vitamine across Amazon, eBay and AliExpress; returns best price, price trend, filter attributes and a direct link.
| Name | Required | Description | Default |
|---|---|---|---|
| brand | No | Auf eine Marke einschraenken (exakter Wert aus facets.marke, z.B. "Nike"). | |
| limit | No | Maximale Anzahl Ergebnisse (Default 24, max 100). | |
| query | No | Suchbegriff, z.B. Modell/Marke/Eigenschaft ("Balkonkraftwerk 800W", "iPhone 15 schwarz"). Optional. | |
| maxPrice | No | Hoechstpreis in EUR (optional). | |
| minPrice | No | Mindestpreis in EUR (optional). |
Output Schema
| Name | Required | Description |
|---|---|---|
| site | No | |
| count | Yes | |
| query | No | |
| facets | No | Verfuegbare Filter-Werte (Marke + domain-spezifische Attribute) mit Trefferzahlen — zum gezielten Nachfiltern via query/brand/minPrice/maxPrice. |
| products | Yes | |
| updatedAt | No | |
| disclosure | No | |
| catalogVersion | No |
Tool Definition Quality
Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare read-only, idempotent, non-destructive. The description adds that it is read-only, mentions affiliate links with unchanged prices, and explains the 30-day price trend and response facets. It provides behavioral context beyond annotations, though it could mention data freshness or rate limits.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is long but densely packed with useful information. It front-loads purpose and usage. The bilingual repetition (German and English) is somewhat redundant but acceptable. Overall, it earns its length.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
Given the presence of an output schema, the description does not need to explain return values. It still lists key fields (title, best price, brand, image, 30-day trend, attributes, links, facets), which is sufficient. No gaps are evident.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 100%, so baseline is 3. The description adds minimal parameter context: an example for 'query' and that 'brand' must be an exact value from facets.marke. This is helpful but not substantial beyond the schema.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description explicitly states it finds the cheapest vitamins in Germany across Amazon, eBay, and AliExpress using specific verbs ('Findet', 'Preisvergleich'). It clearly distinguishes from the sibling tool 'lookup_product' by focusing on price comparison and multi-platform search.
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
The description explicitly tells when to use this tool: when the user asks for price, offer, 'cheap', 'where to buy', or a specific vitamin supplement. It provides context about searching ~150 products with filters. However, it does not explicitly mention when not to use it or compare directly to the sibling 'lookup_product'.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
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