{"status":"ok","tool":"slab_census_summary","total_slabs":9813,"unique_certs":6135,"cards_covered":384,"last_observed":"2026-09-03","by_grader":[{"grader":"PSA","slabs":5826},{"grader":"CGC","slabs":1632},{"grader":"BGS","slabs":1361},{"grader":"TAG","slabs":439},{"grader":"unlabeled","slabs":177},{"grader":"Other","slabs":140},{"grader":"ACE","slabs":97},{"grader":"SGC","slabs":48},{"grader":"Automated Grading Systems (AGS)","slabs":34},{"grader":"Premier Card Grading (PCG)","slabs":23},{"grader":"Hybrid Grading Approach (HGA)","slabs":6},{"grader":"Professional Card Authenticator (PCA)","slabs":5},{"grader":"Diamond Service Grading (DSG)","slabs":5},{"grader":"AiGrading","slabs":4},{"grader":"Trading Card Grading (TCG)","slabs":3},{"grader":"MNT Grading (MNT)","slabs":3},{"grader":"Majesty Grading Company","slabs":2},{"grader":"Gem Mint Authentication (GMA)","slabs":2},{"grader":"Rare Edition (Rare)","slabs":1},{"grader":"K Sportscard Authentication (KSA)","slabs":1},{"grader":"International Sports Authentication (ISA","slabs":1},{"grader":"Gold Standard Grading (GSG)","slabs":1},{"grader":"Arena Club","slabs":1},{"grader":"ARK Grading (ARK)","slabs":1}],"what_this_is":"an eBay-observed census of graded slabs actually circulating on the market — NOT a pop report (pop counts vaulted slabs; this counts what presses on price). Grader+grade come from marketplace-required listing fields, cert numbers verify uniqueness.","per_card_depth":"/api/v1/census?product_id= ($0.05)"}