Price Monitoring

Define your schema once, run on a cron, diff against the last snapshot. Suitable for retail, e-commerce, SaaS pricing pages, and travel rates.

Schema

{
  "type": "object",
  "properties": {
    "name":            { "type": "string" },
    "price":           { "type": "number" },
    "currency":        { "type": "string" },
    "discountPercent": { "type": "number" },
    "inStock":         { "type": "boolean" }
  },
  "required": ["name", "price"]
}

Implementation

Submit through /batch/extract with the URLs of every product you track. Pair with a webhook so your worker only fires when fresh data lands.

curl -X POST https://openapi.thunderbit.com/openapi/v1/batch/extract \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d @payload.json

Where payload.json carries the URL list, the schema above, and your webhook config.

Diffing

Hash each (url, name) pair, store the price + timestamp, and surface meaningful deltas (e.g. price drops over 10%) to Slack or email.

Tips

• Pin a countryCode if the target site shows different prices per geo
• Use renderMode: "basic" for SPAs that hydrate the price asynchronously
• For sites behind anti-bot, see Anti-bot & JS Rendering

Related

• Schema Design
• Webhooks

This recipe is being expanded with a complete cron + diff worker example — check back soon.