wostrom.de Preisvergleich
Server Details
Deutscher Preisvergleich für Strom-Produkte – Bestpreis-Suche (read-only).
- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP
- URL
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Tool Definition Quality
Average 4.3/5 across 2 of 2 tools scored.
Each tool has a distinct purpose: search_offers finds products by query, lookup_product retrieves details by ID/URL. No overlap.
Both tools follow a clear verb_noun pattern (search_offers, lookup_product) with consistent snake_case.
Two tools is on the lower end of appropriate for a price comparison server, but covers search and lookup. Could benefit from additional tools like category browsing.
The set covers core operations (search and lookup) but lacks features like filtering, comparison, or historical trends beyond 30 days.
Available Tools
2 toolslookup_productProdukt auf wostrom.de per ID/URL nachschlagenARead-onlyIdempotentInspect
Schlaegt ein konkretes Produkt im aktuellen wostrom.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 wostrom.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 mark it as read-only and idempotent. The description adds that it extracts ASIN from a URL and returns specific data. No contradictions, and the behavioral detail is useful beyond annotations.
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?
Extremely concise: two German sentences and a brief English translation. Front-loaded purpose and no unnecessary words. Efficient and well-structured.
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?
With an output schema (not shown but present) and 100% schema coverage, the description is adequate. It explains what data is returned and input constraints. Could mention error handling or rate limits, but not critical given annotations.
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%, so baseline is 3. The description adds constraint 'exactly one' and clarifies the id format (ASIN or externalId) and URL example with extraction behavior, providing meaningful extra context.
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, and lists the returned data (best price, 30-day stats, offer link). It distinguishes itself from the sibling search_offers by focusing on a concrete product lookup.
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?
Explicitly states exactly one of id or url must be provided. It explains where to get the ID (from search_offers) and gives a URL example. Implicitly contrasts with search_offers, but does not explicitly state when not to use it.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.
search_offersstrom in Deutschland zum Bestpreis finden (Amazon, eBay, AliExpress)ARead-onlyIdempotentInspect
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 ~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 strom 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?
Discloses read-only nature and affiliate links (price unchanged) beyond annotations. Annotations already declare readOnlyHint=true, destructiveHint=false, so description adds context about the affiliate model and price consistency.
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?
Four sentences in a single paragraph; each sentence adds value (purpose, usage, search scope, return fields, read-only note). Slightly messy due to language mix but no wasted words.
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?
Describes most return fields (title, best price, brand, image, 30-day trend, attributes, links, facets). Output schema exists, so details are supplemental. Lacks explanation of facets but overall complete.
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?
Input schema covers 100% of parameters with descriptions. The description summarizes filter options (query, brand, price range) but adds no new meaning beyond the schema. Baseline 3 is appropriate.
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?
Specifies the verb 'findet' (finds) and resource 'strom' (products) with a clear scope across Amazon, eBay, and AliExpress. Distinguishes from sibling 'lookup_product' by being a search tool, not a single product lookup.
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?
Explicitly states when to use: when a user asks about price, offer, cheap, where to buy, or a specific product. Does not mention when not to use, but provides clear context.
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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{
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