Introduction
Core Concepts
Extralt organizes extraction around four entities. Understanding how they relate is key to using the platform effectively.
Robot
A robot is an AI-generated crawler compiled to Rust, built for a specific host and country combination. Robots understand a site's structure: how to navigate pages, find products, and extract structured product data.
Getting a robot starts with a robot build. You provide a URL and country. If Extralt already has a production crawler for that site, you get instant access. Otherwise, the AI analyzes the site, generates extraction logic, and compiles it in a few minutes. Either way, a robot appears in your robot list.
- One robot per host + country combination
- Robots are reusable across multiple runs
- Extralt monitors extraction quality and rebuilds crawlers automatically when sites change
See Robots for build lifecycle and management.
Schedule
A schedule automates recurring extractions. You link a schedule to a robot with a cadence (e.g. every hour, every day, every week), and Extralt automatically creates runs on that schedule.
- Schedules can be paused and resumed at any time
- If your credits run out, active schedules auto-pause until credits are available
- Each run created by a schedule costs credits the same way as a manual run
See Schedules for creation and management.
Run
A run is an extraction job. You select a robot, provide start URLs (optional), and set a budget (maximum URLs to extract, optional). The robot crawls the site and produces captures.
Run lifecycle:
- Pending -> queued for execution
- Starting -> run is starting
- Running -> actively crawling and extracting
- Completed -> finished successfully
- Failed -> encountered an unrecoverable error
- Stopped -> manually stopped by the user
Each URL extracted in a run costs 1 credit.
See Running Extractions for run creation and monitoring.
Capture
A capture is a single extracted data record from a run. Each capture contains structured ecommerce product data. You can browse and export captures in the dashboard, or fetch them programmatically via the API.
{
"id": "019d3ec3-cf96-7520-bc31-1474206e06ed",
"url": "https://www.nike.com/t/dna-mens-dri-fit-basketball-shorts-hVGm16/HV1878-350",
"extracted_at": 1774874512106,
"product_id": "HV1878-350",
"handle": "dna-mens-dri-fit-basketball-shorts-hVGm16",
"group_id": "hVGm16",
"title": "Nike DNA",
"subtitle": "Men's Dri-FIT Basketball Shorts",
"brand": "Nike",
"breadcrumbs": "Men > Basketball > Shorts",
"description": "Built for the court, ready for anywhere. These lightweight-yet-durable basketball shorts help keep you cool with our sweat-wicking Dri-FIT technology.",
"release_date": "2025-10-02T07:00:00.000Z",
"gender": "MEN",
"age_group": "Adult",
"rating_average": null,
"rating_count": 0,
"rating_scale": 5,
"min_price": 41.97,
"max_price": 41.97,
"currency": "USD",
"is_available": true,
"variant_count": 7,
"image_url": "https://static.nike.com/a/images/t_default/326dc2d4-a16d-4433-93d7-8d6f8313d4d0/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"categories": [
"Men",
"Basketball",
"Shorts"
],
"tags": [
"Basketball",
"Dri-FIT",
"Shorts",
"Men"
],
"images": [
{
"url": "https://static.nike.com/a/images/t_default/326dc2d4-a16d-4433-93d7-8d6f8313d4d0/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"position": 1,
"variant_ids": [
"HV1878-350"
]
},
{
"url": "https://static.nike.com/a/images/t_default/e2c6c1aa-6d12-46b9-9385-d76bd4fa30e0/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"position": 3,
"variant_ids": [
"HV1878-350"
]
},
{
"url": "https://static.nike.com/a/images/t_default/38d8c21c-c8dd-466b-949c-92fdfcd0320b/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"position": 4,
"variant_ids": [
"HV1878-350"
]
},
{
"url": "https://static.nike.com/a/images/t_default/79d907aa-1763-4af7-a1bf-99f5fc30acc4/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"position": 5,
"variant_ids": [
"HV1878-350"
]
},
{
"url": "https://static.nike.com/a/images/t_default/1cd3d1a3-fea9-4295-bf8a-f3d6d59f2d47/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"position": 6,
"variant_ids": [
"HV1878-350"
]
},
{
"url": "https://static.nike.com/a/images/t_default/3cf19355-4f26-4faf-b658-581297b87e9c/M+NK+DF+DNA+8IN+SHORT+AOP.png",
"position": 7,
"variant_ids": [
"HV1878-350"
]
}
],
"videos": null,
"properties_dict": {
"Style": "HV1878-350",
"Shown": "Chlorophyll/Black"
},
"properties_list": [
"Recycled Materials",
"Designed for Basketball",
"Unlined",
"Lightweight, sweat-wicking fabric with mesh and smooth interior",
"Side pockets and zippered utility pocket large enough for a phone",
"Elastic waistband with drawcord",
"Body: 100% polyester. Pocket bags: 100% polyester.",
"Machine wash",
"Imported",
"Shown: Chlorophyll/Black",
"Style: HV1878-350"
],
"options": {
"opt1": {
"name": "Color",
"values": [
"Chlorophyll/Black"
]
},
"opt2": {
"name": "Size",
"values": [
"S",
"M",
"L",
"XL",
"2XL",
"3XL",
"4XL"
]
},
"opt3": null
},
"variants": [
{
"id": "90c9f2c2-d984-5cc2-a2a0-89deac668eb3",
"title": null,
"identifiers": {
"gtin": "00198482162061",
"mpn": "HV1878-350"
},
"opt1": "Chlorophyll/Black",
"opt2": "S",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": true,
"quantity": "In stock"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
},
{
"id": "032621f4-8f17-5716-932d-a93b0d1dfc4a",
"title": null,
"identifiers": {
"gtin": "00198481839179",
"mpn": "HV1878-350"
},
"opt1": "Chlorophyll/Black",
"opt2": "M",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": true,
"quantity": "In stock"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
},
{
"id": "a73069dc-17b2-5dc7-b5cc-e78c9674d8cd",
"title": null,
"identifiers": {
"gtin": "00198481982455",
"mpn": "HV1878-350"
},
"opt1": "Chlorophyll/Black",
"opt2": "L",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": true,
"quantity": "In stock"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
},
{
"id": "417e97e7-c31c-5ac0-999c-5b6779ba831d",
"title": null,
"identifiers": {
"gtin": "00198482264932",
"mpn": "HV1878-350"
},
"opt1": "Chlorophyll/Black",
"opt2": "XL",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": true,
"quantity": "In stock"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
},
{
"id": "42484108-e343-520f-9ed1-1ca72a301174",
"title": null,
"identifiers": {
"gtin": "00198481731473",
"mpn": "HV1878-350"
},
"opt1": "Chlorophyll/Black",
"opt2": "2XL",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": true,
"quantity": "Limited stock available"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
},
{
"id": "179d2b07-b59e-5a7d-912f-cebf81b1d13f",
"title": null,
"identifiers": {
"mpn": "HV1878-350",
"gtin": "00198482258597"
},
"opt1": "Chlorophyll/Black",
"opt2": "3XL",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": false,
"quantity": "Out of stock"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
},
{
"id": "fad73aae-e6b1-58ac-83a3-f17125c0b3b2",
"title": null,
"identifiers": {
"gtin": "00198482211318",
"mpn": "HV1878-350"
},
"opt1": "Chlorophyll/Black",
"opt2": "4XL",
"opt3": null,
"offers": [
{
"price": {
"amount": 41.97,
"full_amount": 60,
"currency": "USD"
},
"availability": {
"in_stock": false,
"quantity": "Out of stock"
},
"condition": "new",
"seller": "Nike",
"seller_type": "1p"
}
]
}
],
"recommended_products": [
"https://www.nike.com/t/mens-dri-fit-basketball-t-shirt-WPpZO1IN/HV1772-010",
"https://www.nike.com/t/victory-sunglasses-PP0tbC/DV2138-010",
"https://www.nike.com/t/brasilia-95-training-backpack-medium-24l-zz5tL7/DH7709-068",
"https://www.nike.com/t/ja-2-basketball-shoes-mkEicYoS/HQ8513-001",
"https://www.nike.com/t/mens-basketball-t-shirt-MRuIhbgt/IO9764-133",
"https://www.nike.com/t/dri-fit-club-structured-swoosh-cap-kxvJ3j/FB5625-222",
"https://www.nike.com/t/22oz-big-mouth-water-bottle-2VjPJW/N0000042-968",
"https://www.nike.com/t/lebron-witness-9-basketball-shoes-h9SkAFPT/II7520-100",
"https://www.nike.com/t/primary-mens-dri-fit-short-sleeve-versatile-top-XK77j1/DV9831-097",
"https://www.nike.com/t/utility-speed-backpack-27l-QnNg7P/FN4106-010",
"https://www.nike.com/t/everyday-playground-8-panel-basketball-gcWDgD/N1003082-816",
"https://www.nike.com/t/precision-7-easyon-mens-basketball-shoes-779glM/FN0324-101"
]
}See Working with Captures for the full schema reference.
How they relate
| Step | What happens |
|---|---|
| 1. You provide | A URL and country |
| 2. Robot Build | Instant access for covered sites, or AI builds a new crawler in minutes |
| 3. Robot | A reusable crawler ready to extract data |
| 4. Schedule (optional) | Automate recurring extractions on a cadence |
| 5. Run | The robot crawls start URLs and extracts products (manual or via schedule) |
| 6. Captures | Structured data records, one per extracted URL |