Real-time technology detection for a domain — frameworks, CMS, analytics, CDN, hosting, and 50+ more technologies.

GET /v1/tech-stack

Fetches the domain's homepage in real time and detects technologies using fingerprint rules. Costs 2 credits.

Parameters

Parameter	Type	Required	Description
`domain`	string	Yes	The domain to query

Request

curl "https://api.rankparse.com/v1/tech-stack?domain=vercel.com" \
  -H "X-API-Key: rp_your_key"

Response

{
  "data": {
    "domain": "vercel.com",
    "technologies": [
      { "name": "Next.js", "category": "framework", "confidence": "definite" },
      { "name": "React", "category": "framework", "confidence": "high" },
      { "name": "Cloudflare", "category": "cdn", "confidence": "definite" },
      { "name": "Vercel", "category": "hosting", "confidence": "definite" },
      { "name": "Google Analytics 4", "category": "analytics", "confidence": "definite" }
    ],
    "server": "cloudflare",
    "x_powered_by": null,
    "response_time_ms": 241
  },
  "credits_used": 2
}

Technology categories

Category	Examples
`framework`	Next.js, Nuxt, Gatsby, React, Vue, Angular, Svelte, Remix, Astro
`cms`	WordPress, Ghost, Webflow, Framer, Squarespace, Wix, Drupal
`ecommerce`	Shopify, WooCommerce, BigCommerce, Magento
`analytics`	Google Analytics, GTM, Meta Pixel, Hotjar, PostHog, Plausible, Segment
`cdn`	Cloudflare, AWS CloudFront, Fastly, Akamai
`hosting`	Vercel, Netlify, Fly.io, Render, Railway
`email_marketing`	Klaviyo, Mailchimp, ConvertKit
`ab_testing`	Optimizely, VWO, AB Tasty
`payments`	Stripe, PayPal, Paddle
`crm`	HubSpot, ActiveCampaign
`support`	Intercom, Zendesk, Crisp, Drift

Confidence levels

definite — unique identifier in response headers or HTML (e.g. cf-ray header = Cloudflare)
high — strong pattern match (e.g. __NEXT_DATA__ in HTML = Next.js)
medium — weaker signal, possible false positives

Notes

Returns 503 with code: fetch_failed if the domain is unreachable
Detection is based on the homepage only — dynamically loaded scripts may not be detected

Tech Stack