Technology Migrations API

Retrieve public technologies newly detected between each website's latest two successful crawls.

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Endpoint

GEThttps://api.stackcrawler.com/v1/technology-migrations

A migration is returned when a public technology exists in a website's latest snapshot but not in its immediately preceding snapshot. First-time crawls are excluded because they have no previous snapshot to compare.

Authentication

Send your API key as a Bearer token in the Authorization header:

Authorization: Bearer YOUR_API_KEY

Requests count toward the API allowance for your current plan.

Query parameters

Name	Required	Description
`technology`	No	Public technology slug, such as `shopify`. Omit it to return all migrations.
`page`	No	Positive page number. Defaults to 1.
`limit`	No	Results per page. Defaults to 20 and is capped at 100.

Response

The response contains a websites array and pagination metadata. Filtered responses also include the selected tool. General-feed entries include a tool object on each website migration.

Example request

curl --location 'https://api.stackcrawler.com/v1/technology-migrations?technology=shopify&page=1&limit=20' \
--header 'Authorization: Bearer [YOUR_API_KEY_HERE]'

Example response

{
  "tool": {
    "name": "Shopify",
    "slug": "shopify"
  },
  "websites": [
    {
      "id": 123,
      "url": "https://example.com",
      "title": "Example Store",
      "favicon": "https://example.com/favicon.ico",
      "language": "en",
      "websiteCategory": "Ecommerce",
      "version": null,
      "addedAt": "2026-08-03T10:00:00.000Z"
    }
  ],
  "pagination": {
    "page": 1,
    "limit": 20,
    "total": 1,
    "totalPages": 1
  }
}

Error responses

Status	Meaning
400	The technology slug is invalid.
401	The API key is missing or invalid.
404	The requested technology does not exist or is not public.
429	The rate or plan request limit was reached.
500	An internal error occurred.