{"demo":true,"message":"No API key needed — try these calculations yourself with curl","sample_calculations":{"isk_skatt":{"description":"ISK tax on a 500,000 SEK portfolio","input":{"kapitalunderlag":500000,"statslaneranta":0.025},"output":{"isk_skatt":5250.0,"valuta":"SEK"},"curl":"curl -H 'X-API-Key: skatt_demo_free_2026' https://skatteapi.gracestack.se/calculate/isk-tax -H 'Content-Type: application/json' -d '{\"kapitalunderlag\": 500000, \"statslaneranta\": 0.025}'"},"moms":{"description":"Add 25% VAT to 1,000 SEK","input":{"belopp":1000,"momssats":0.25},"output":{"momsbelopp":250.0,"belopp_med_moms":1250.0,"valuta":"SEK"},"curl":"curl -H 'X-API-Key: skatt_demo_free_2026' https://skatteapi.gracestack.se/calculate/moms -H 'Content-Type: application/json' -d '{\"belopp\": 1000, \"momssats\": 0.25}'"},"inkomstskatt":{"description":"Income tax on 480,000 SEK salary","input":{"arsinkomst":480000,"kommunalskattesats":0.3229},"output":{"total_inkomstskatt":154992.0,"behallen_lon":325008.0,"valuta":"SEK"},"curl":"curl -H 'X-API-Key: skatt_demo_free_2026' https://skatteapi.gracestack.se/calculate/inkomstskatt -H 'Content-Type: application/json' -d '{\"arsinkomst\": 480000, \"kommunalskattesats\": 0.3229}'"},"arbetsgivaravgift":{"description":"Employer cost for 45,000 SEK/month salary","input":{"lon":45000,"fodelsear":1990},"output":{"arbetsgivaravgift":14139.0,"total_kostnad":59139.0,"valuta":"SEK"},"curl":"curl -H 'X-API-Key: skatt_demo_free_2026' https://skatteapi.gracestack.se/calculate/arbetsgivaravgift -H 'Content-Type: application/json' -d '{\"lon\": 45000, \"fodelsear\": 1990}'"}},"free_tier":{"rate_limit":"10 req/min","demo_key":"skatt_demo_free_2026"},"pro_cta":{"headline":"🚀 SkatteAPI Pro — 99 kr/mån","price":"99 SEK/month","rate_limit":"300 req/min","first_month_free":true,"guarantee":"Ingen bindningstid. Avsluta när du vill.","subscribe_url":"https://skatteapi.gracestack.se/pro/subscribe","direct_stripe_link":"https://buy.stripe.com/14A8wOcnjabte8W3pq0sV2f","pricing_url":"https://skatteapi.gracestack.se/pro/pricing","curl_subscribe":"curl -X POST https://skatteapi.gracestack.se/pro/subscribe -H \"Content-Type: application/json\" -d '{\"email\": \"you@example.com\"}'","message":"10 anrop/min räcker inte? Pro ger 300 anrop/min för 99 kr/mån. Första månaden ingår. Prenumerera på 30 sekunder."},"powered_by":{"engine":"Bride Cognitive AI","description":"Detta API drivs av Bride — en kognitiv AI med Active Inference, HDC-minne och magkänsla. Bygg ditt eget intelligenta API.","url":"https://bride.gracestack.se","docs":"https://gracestack.se/cognitive-api"},"next_step":{"message":"Want your own API key or a custom endpoint? Claim free early access:","claim_url":"https://skatteapi.gracestack.se/claim","curl":"curl https://skatteapi.gracestack.se/claim"}}