Email marketing apps ranked by installs

# Free: how many stores run the app
curl https://api.installgraph.com/v1/apps/signalpath/companies/count \
  -H "Authorization: Bearer $INSTALLGRAPH_KEY"

# 1 credit per store: the stores themselves
curl https://api.installgraph.com/v1/apps/signalpath/companies \
  -H "Authorization: Bearer $INSTALLGRAPH_KEY"

# Response (abridged)
{
  "data": [
    {
      "domain": "example-store-one.com",
      "name": "Example Store One",
      "country": "US",
      "firstSeenAt": "2026-03-04T00:00:00Z",
      "lastSeenAt": "2026-11-02T00:00:00Z"
    },
    {
      "domain": "example-store-two.com",
      "name": "Example Store Two",
      "country": "US",
      "firstSeenAt": "2026-09-18T00:00:00Z",
      "lastSeenAt": "2026-11-01T00:00:00Z"
    }
  ],
  "pagination": {
    "nextCursor": "eyJkIjoiZXhhbXBsZS1zdG9yZS10d28uY29tIn0",
    "hasMore": true
  },
  "meta": {
    "requestId": "req_8f2c41",
    "creditsCharged": 2,
    "creditsRemaining": 48
  }
}

Filter by country, region, industry and order value. A store's whole stack is GET /v1/companies/{domain}, and category-level counts are free at GET /v1/public/stats with no key. Full reference: API docs.