TypeScript 61.9%
HTML 37.2%
SQL 0.7%
1{2 "id": "ngc-cert",3 "displayName": "NGC cert verification",4 "sourceId": "ngc",5 "sourceName": "NGC (Numismatic Guaranty Company)",6 "sourceType": "grading_company",7 "sourceUrl": "https://www.ngccoin.com/certlookup/",8 "module": "firecrawl/ngc-cert",9 "enginePriority": ["firecrawl", "scrapfly"],10 "categories": ["coins", "medals"],11 "regions": ["US"],12 "languages": ["en"],13 "currency": ["USD"],14 "supportsListings": false,15 "supportsSold": false,16 "supportsAuctions": false,17 "supportsImages": true,18 "supportsCatalog": true,19 "supportsPopulation": true,20 "supportsLookup": true,21 "capabilities": ["cert_lookup", "grading_population", "catalog", "url_lookup", "images"],22 "refreshFrequencyMinutes": 10080,23 "priority": "high",24 "trustScore": 0.95,25 "attributionRequired": true,26 "termsUrl": "https://www.ngccoin.com/terms-of-use/",27 "acquisitionMethod": "Firecrawl render of the public cert page (Scrapfly fallback)",28 "historicalDepth": "none",29 "accessNotes": "Reads ONLY the public 'Verify NGC Certification' page https://www.ngccoin.com/certlookup/<cert>/<grade>/ for supplied certs; no enumeration. NGC needs the holder grade in the URL (numeric 1–70, NGCDetails, NGCAncients, Other) — a URL without it renders the empty form and yields zero records, so seeds are 'cert/grade' (e.g. 4627835-016/61) and the worker should pass the grade seen on the marketplace. ngccoin.com/robots.txt: 'User-agent: * Allow: /' (only AhrefsBot disallowed). Plain HTTP on /certlookup returns a Cloudflare managed-challenge 403, so the page is rendered by Firecrawl (1 credit) with Scrapfly fallback — public, no login. Fields read: cert, description, grade, grade date, label, the holder images, the NGC price-guide value (metadata only) and the on-page 'Total Graded by NGC: In <grade>: n / In Higher Grades: m' counts (partial population_report, population_scope=grade_and_higher, sourceUrl = the linked public census page). Deliberately NOT fetched: NGC Registry, Coin Explorer, auction central; the full NGC census pages are public but not crawled by this connector. A not-found cert yields zero records.",30 "enabled": true,31 "schemaVersion": "1.0",32 "config": {33 "grader": "ngc",34 "certs": ["4627835-016/61", "8444762-003/NGCDetails"],35 "maxPerRun": 5036 }37}38