The Price Data Layer for
    Ecommerce Winners

    Reliable, validated real-time ecommerce marketplace data with audit trails and quality signals. Decision-ready. API-first. So you focus on pricing, not maintenance.

    Get API Key
    View Pricing· Free tier available · Plans from €399/mo
    Countries
    71
    Sources tracked
    12
    SKUs monitored
    100mio
    Live since
    2016

    Coverage

    Track the Marketplaces That Matter

    Query live marketplace and shopping-channel price data from one endpoint. Send a GTIN or product identifier and get validated results back.

    Available sources12 live

    Matched by GTIN, not guessed by title. Especially on Google Shopping, where most providers return keyword-matched listings — kwery resolves the actual product, so your price comparisons are apples-to-apples.

    Smart Data Delivery

    From Snapshots to Signals

    kwery provides the decision-ready infrastructure for high-volume pricing. We move beyond "dumb" daily dumps to deliver actionable marketplace intelligence.

    Smart change events

    Webhook fires only when the retrieved data reports a material change — price, offer-count or buy-box change. No more processing 500MB daily files to find 12 relevant price changes.

    Fewer mistakes. Better margins.

    {
  "marketplace" amazon.de,
  "key"   gtin,
  "value" 4006381018258,
  "change" major,
  "price" {
    "from" 13.20,
    "to"   11.49
  },
  "offers" {
    "from" 6,
    "to"   7
  }
}

    Data Health & Confidence

    One number that tells you whether to trust this price. Every data point includes a reliability score covering match confidence, stock status, and offer authenticity — so you know it's the right product, before you reprice.

    Cleaner inputs. No cascades.

    {
  "trust" {
    "score" 0.92,
    "detail" {
      "identity"            1.00,
      "completeness"        0.89,
      "price_integrity"     0.95,
      "offer_contamination" 1.00,
      "freshness"           0.75
    },
    "flagged_offers" []
  }
}

    Audit & Provenance

    Every result is logged with URL, status, timestamp, GEO and job type. When a pricing decision is questioned, we provide a complete audit trail showing exactly which data triggered it and when.

    Debug fast. Prove what happened.

    {
  "crawl_id"    01J3R5T7Z9,
  "marketplace" amazon.de,
  "key"   gtin,
  "value" 4006381018258,
  "observed_at" 2026-05-18,
  "http_status" 200,
  "duration_ms" 2415,
  "snapshot" {
    "price"  11.49,
    "offers" 7
  }
}

    Every field shown here — and more — is documented in full.

    View Documentation

    Audience

    One Data Layer. Three Ways to Use It.

    kwery is the pricing data foundation behind retailer pricing decisions, repricing engines, and multichannel platforms — built to fit however your team already works.

    01

    Retailers

    Track the competitors that actually matter to your market — not every marketplace, just the ones relevant to your footprint. No noise from sources your customers never compare you against.

    02

    Repricing Platforms

    Feed your engine with pricing data you don't have to maintain yourself — reliable coverage instead of fragile scrapers or gaps in Seller API access.

    03

    Multichannel Platforms

    A dependable data supplier behind your product — normalized, resellable pricing you can build on instead of running your own ingestion pipeline.

    Serving a niche outside these three? Talk to us — kwery is built to extend, not just fit a fixed mold.

    Operational Fit

    Your Logic Stays Yours

    kwery delivers validated, high-throughput price data. You keep every pricing decision, rule, and threshold — running on infrastructure built to hold up at production scale.

    RULES

    No Black-Box Repricing

    Build your own algorithms without being forced into rigid, one-size-fits-all vendor logic.

    if margin < 0.12: hold_price
    elif buybox_lost: match - 0.01
    else: maintain
    STACK

    Plug Into Any Environment

    Feed clean, structured data into whatever your team already runs.

    cURLpythonnode
    curl -H "X-API-Key:..." \
    api.kwery.co/v1/prices
    CONFIG

    Full Control

    You decide the frequency, scope, and thresholds that define your market strategy.

    Frequencyevery 15 min
    Scope1.2M SKUs
    Margin floor±3.0%
    >100K
    checks / min

    High Throughput

    Scale to millions of price checks per day without breaking your data pipeline.

    1
    unified schema

    Standardization

    One stable schema across all marketplaces. Write repricing logic once, it works everywhere.

    100%
    audit coverage

    Transparency

    Debug repricing mistakes faster with full audit trails per price point.

    99.9%
    uptime

    Resilience

    Your repricing engine never goes dark; we guarantee 99.9% uptime (Enterprise).

    Get API KeyView Documentation

    Evaluating for high-volume or Enterprise use? Talk to Sales

    Native Integration

    Runs Inside Your Stack.
    Not on Top of It.

    kwery feeds the tools your team already owns — pricing engines, ERPs, data warehouses, internal dashboards. If you build pricing logic — for yourself or for clients — kwery fits.

    kwery engine core

    01Repricing

    Repricing Engines

    Push optimized prices into your existing engine.

    02Warehouse

    Data Warehouses

    Stream normalized rows into Snowflake, BigQuery, Redshift.

    03Channels

    Multichannel Platforms

    Feed Channable, Productsup, plentymarkets, and peers.

    04Analytics

    BI & Analytics Tools

    Power Looker, Tableau, and Metabase dashboards directly.

    05Internal

    Internal Price Systems

    Wire kwery into in-house pricing services via API.

    06Agency

    Agency-built Dashboards

    Drop into client dashboards as a managed data layer.

    Works With Your Cloud Stack

    AWS
    GCP
    Snowflake
    BigQuery
    Python
    Node.js

    Support

    Common kwery Questions

    The questions teams ask most often before they integrate. Full answers live in the knowledgebase.

    Browse all FAQs

    kwery is price data infrastructure for e-commerce. We deliver decision-ready marketplace pricing data via a native API — real-time change events, health signals, and full auditability. You stay in control of your repricing logic; kwery is the reliable data layer underneath it. How it works.

    No. kwery is the data layer underneath whatever pricing logic you already run — your ERP, PIM, repricer, or custom engine keeps full control. We only deliver the marketplace data they consume.

    Yes. kwery is API-first and emits structured JSON, so you can land events directly in a warehouse, feed them into a custom pricing engine, or route them through your existing ETL. Architecture and integration model.

    No data provider can honestly claim 100% accuracy from public marketplace surfaces — they change constantly. What we guarantee is transparency: every record carries a confidence score, every result is timestamped and traceable, and questionable values are flagged rather than passed off as fact.

    Data is always real-time. kwery fetches from the marketplace at the moment of request — not from a cached or aggregated feed. Every record carries an observed_at timestamp so you know exactly when it was collected. Typical end-to-end latency is under a second.

    Every kwery customer — free, Growth, and Enterprise — integrates against the same API: sign up, get an API key, and call the same endpoints. The difference is what is wrapped around it. Self-serve tiers (Free and Growth S/M/L) have published per-credit pricing and standard limits — sign up and start integrating immediately. The Enterprise tier adds a full SLA, dedicated support with engineering response times, custom sources, and negotiated volume sized to your real traffic during onboarding. See plans.

    Ready to Upgrade Your Pricing Infrastructure?

    Feed your pricing logic with trustworthy data. Access the API documentation or get your API keys today.

    Get API KeyView DocumentationTalk to Sales
    Free Tier Available
    Enterprise SLA (99.9% Uptime)
    Global Scale