{"id":"age-calculator","engine":"core","category":"date","name":"Age calculator","fields":[{"key":"birth","label":"Date of birth","type":"date","default":"1995-06-15","required":true},{"key":"asof","label":"As-of date","type":"date","default":"2026-11-11","required":true}],"sample":{"birth":"1995-06-15","asof":"2026-11-11"}}