wostrom.de Preisvergleich

strom in Deutschland zum Bestpreis finden (Amazon, eBay, AliExpress)

search_offers

Read-onlyIdempotent

Findet strom zum guenstigsten aktuellen Preis in Deutschland (EUR) ueber Amazon, eBay und AliExpress — Preisvergleich wostrom.de. Nutze dieses Tool, wenn ein Nutzer nach Preis, Angebot, "guenstig", "wo kaufen" oder einem konkreten strom fragt. Durchsucht den vollen Katalog (mehrere hundert 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 strom across Amazon, eBay and AliExpress; returns best price, price trend, filter attributes and a direct link.

Input Schema

TableJSON Schema

Name	Required	Description
`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

TableJSON 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

Schema Changelog

Changes observed during successful MCP inspections.

Changed11 schema fields changedJul 7, 2026

addedInput schema / properties / brand

Added value: +{
+  "description": "Auf eine Marke einschraenken (exakter Wert aus facets.marke, z.B. \"Nike\").",
+  "type": "string"
+}

changedInput schema / properties / limit / description

Previous value: -"Maximale Anzahl Ergebnisse (Default 24, max 50)."New value: +"Maximale Anzahl Ergebnisse (Default 24, max 100)."

changedInput schema / properties / limit / maximum
```
Previous value: -50New value: +100
```

addedInput schema / properties / maxPrice

Added value: +{
+  "description": "Hoechstpreis in EUR (optional).",
+  "type": "number"
+}

addedInput schema / properties / minPrice

Added value: +{
+  "description": "Mindestpreis in EUR (optional).",
+  "type": "number"
+}

changedInput schema / properties / query / description

Previous value: -"Optionaler Suchbegriff — filtert nach Titel, Marke oder Haendler."New value: +"Suchbegriff, z.B. Modell/Marke/Eigenschaft (\"Balkonkraftwerk 800W\", \"iPhone 15 schwarz\"). Optional."

addedOutput schema / properties / facets

Added value: +{
+  "description": "Verfuegbare Filter-Werte (Marke + domain-spezifische Attribute) mit Trefferzahlen — zum gezielten Nachfiltern via query/brand/minPrice/maxPrice.",
+  "type": "array"
+}

addedOutput schema / properties / products / items / properties / attributes

Added value: +{
+  "description": "Domain-spezifische Filter-Attribute, z.B. {farbe, watt, speicher, reichweite}.",
+  "type": "object"
+}

addedOutput schema / properties / products / items / properties / brand
```
Added value: +{
+  "type": "string"
+}
```

addedOutput schema / properties / products / items / properties / detailUrl

Added value: +{
+  "description": "Zitierfaehige Produktseite mit Preisverlauf.",
+  "type": "string"
+}

addedOutput schema / properties / products / items / properties / priceStats / description
```
Added value: +"30-Tage-Preisstatistik (avg/min/max, isLowest30d)."
```

First observedJul 6, 2026

TDQS

A4.1/5.0

Behavior5/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already mark readOnlyHint, idempotentHint, and destructiveHint false; the description adds meaningfully richer behavior: it is explicitly read-only, discloses that purchases happen at the linked merchant as affiliate with unchanged price, and explains the full-catalog scope and the 30-day price-trend signal (priceStats.isLowest30d). No contradiction with annotations exists.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness3/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is front-loaded with the trigger condition and is information-dense, but the final English sentence repeats almost exactly what the German part already says. The output-field enumeration is also longer than necessary because an output schema exists, so some sentences do not earn their place.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness5/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The description covers when to use it, geographic and currency scope, indexed sources, filter options, returned fields including facets and detailUrl, affiliate/read-only behavior, and the meaning of the 30-day-low flag. Combined with the full input and output schemas and annotations, nothing essential is missing for correct invocation.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100%, so the baseline is 3. The description only restates the filter dimensions (Suchbegriff, Marke, Preisspanne) and mentions facets, without adding format, constraints, or semantics beyond what the input schema already documents for query, brand, minPrice, maxPrice, and limit.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description starts with a specific verb and resource: it finds the cheapest current price for 'strom' in Germany across Amazon, eBay and AliExpress, and describes it as a full-catalog search with filters. It is clear what the tool does, but it never explicitly contrasts itself with the sibling lookup_product, so the differentiation is left to the reader.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines4/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

It includes an explicit trigger list: use when the user asks for price, offer, 'guenstig', 'wo kaufen', or a specific 'strom'. However, it gives no when-not guidance and does not point to lookup_product as the alternative for exact or single-product lookup.

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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