{"domain":"plumbing-calc.x402tookit.com","count":1,"changes":[{"captured_at":"2026-10-21T05:06:03.109548","card_hash":"2e066ca848589ec29a85a96997b4fdbbd6695597305429be3d6db73d3ad419f3","previous_card_hash":null,"diff":{"skills_added":[],"skills_removed":[],"skills_changed":[],"fields_changed":[],"other_changed":true,"is_empty":false,"human_summary":"internal fields changed"}}]}