The same answer, as JSON

Free tier

• GET /api/site/{domain}

  One public domain in, the full categorised report with per finding evidence out, plus the change log we already hold.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/site/{domain}
  
  {"ok":true,"domain":"example.sk","final_url":"https://www.example.sk/","fetched_at":"…","cached":false,
   "categories":[{"id":"cms","findings":[{"slug":"wordpress","version":"6.6","confidence":"certain",
     "evidence":[{"type":"meta","key":"generator","value":"WordPress 6.6"}]}]}],
   "hygiene":{"passed":9,"total":13},"changes":[],"quota":{"scope":"free","remaining":19}}

• GET /api/site/{domain}?stream=1

  The same lookup as Server Sent Events, so the page fills in stage by stage instead of showing a spinner.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/site/{domain}?stream=1
  
  event: cached / dns / tls / http / fingerprints / hygiene / done

• GET /api/site/{domain}/history

  Every change we recorded for one domain. History starts the day we first measured it; we never backfill.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/site/{domain}/history
  
  {"ok":true,"domain":"example.sk","first_seen":"…","observations":14,"changes":[…]}

• GET /api/changes

  Recent technology changes across the whole survey panel. Query: tld, category, slug, since, limit.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/changes
  
  {"ok":true,"since":"…","n":38,"items":[{"domain":"example.sk","ts":"…","category":"cms","kind":"switched"}]}

• GET /api/stats/{tld}

  Aggregate usage for .sk or .cz across every category. ETag and Cache-Control public, max-age 3600.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/stats/{tld}
  
  {"ok":true,"tld":"sk","as_of":"…","panel":{…},"categories":[{"id":"cms","items":[{"slug":"wordpress",
    "usage_pct":38.4,"share_pct":56.3,"n":28497,"se_pct":0.18,"change_30d_pp":0.4,"series":[…]}]}]}

• GET /api/stats/{tld}/{category}

  One category in full, with the long tail, the weekly series for 52 weeks and the method line.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/stats/{tld}/{category}
  
  {"ok":true,"tld":"sk","category":"cms","items":[…],"method":"usage_pct = detected / successfully scanned"}

• GET /api/compare

  Two technologies side by side, with the .sk versus .cz split and the switch counts in both directions.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/compare
  
  {"ok":true,"a":{…},"b":{…},"split":{"rows":[{"key":"sk"},{"key":"cz"}]},"switches_12m":{"a_to_b":14,"b_to_a":31}}

• GET /api/technologies

  The catalogue: every category we report, every technology we can name, and the signal types behind it.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/technologies
  
  {"ok":true,"generated":"…","categories":[{"id":"cms","label":"Content management","label_sk":"Redakčný systém"}]}

• GET /api/key

  What this key is and what is left on it. Header X-API-Key required. The only account like surface there is.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/key
  
  {"ok":true,"pack":"10k","quota_total":10000,"quota_used":1487,"quota_left":8513,"rate":{"per_minute":100}}

• GET /api/health

  Liveness and provenance: database size, queue depth, pinned ruleset, ASN table date, last survey run.

  curl https://homelab.tailbf8f27.ts.net/sitetech/api/health
  
  {"ok":true,"version":"1.0.0","db":{…},"ruleset":{"name":"webappanalyzer","pinned":"…"},"survey":{…}}

Errors

Limits

Without a key

20 lookups a day, at most one every 3 seconds.

With a key

3 requests a second, 100 a minute, plus the pack balance.

Per target

One fetch of any given domain per 60 seconds across all clients. Everyone else gets the cached result.

Per lookup

3 s connect, 5 s read, an 8 s hard budget, 512 KB of HTML, 3 redirects, GET only.

Flood guard

50 API requests a second and 1000 a minute per client, cached reads included. It is there so one client cannot flood the server; it consumes nothing.

Packs

• 1,000 requestsEffective 2.90 EUR per hundred requests.
  29 €one off, without VAT
• 10,000 requestsEffective 1.49 EUR per hundred requests.
  149 €one off, without VAT

The honest comparison