{"version":"1.0","type":"card","id":"9c66021d-f743-4385-9f58-6a34d8ba6116","url":"https://stacklist.com/card/9c66021d-f743-4385-9f58-6a34d8ba6116","title":"Mailbox","source_url":null,"note":"Step-by-step guide to building a mailbox base with RumbleStone® blocks, with a 21\" W x 21\" H stone base around a 4x4 mailbox post. Uses medium, large, and mini blocks. Includes a full piece count, product numbers, and an 8-step visual build sequence.\nNext!\n","image":{"url":"https://ucarecdn.com/1d4f89ae-4731-4dc0-af9d-f688c55862df/","alt":"Mailbox","width":2880,"height":1800},"stack":{"id":"48af2fdd-a34c-4257-a0fc-5f7790da4b23","title":"RumbleStone","url":"https://stacklist.com/stack/48af2fdd-a34c-4257-a0fc-5f7790da4b23"},"created_at":"2026-07-16T15:03:36.880Z","updated_at":null,"aco":{"summary":"RumbleStone Project Building Instructions provide step-by-step guidance for constructing a mailbox using stacked stones with construction adhesive. The project requires 12 medium stones, 14 large stones, 36 mini stones, and a 4'x4' mailbox post, with a base size of 21\" W x 21\" H.","tags":["rumblestone","mailbox","building-instructions","diy-project","construction","landscape-design","bilingual"],"key_entities":[{"name":"RumbleStone","type":"technology","confidence":0.95},{"name":"construction adhesive","type":"concept","confidence":0.85},{"name":"mailbox post","type":"concept","confidence":0.8}],"classification":"tutorial","language":"en","confidence":0.85,"provenance":{"model":"claude-haiku-4-5","tool":"@stacklist/be@0.1.0","confidence":0.85,"timestamp":"2026-09-23T10:40:26.223Z"},"token_counts":{"approximate":268,"cl100k":360},"content_hash":"sha256:967f5056a51221a7d10c48e9212c048b36257ee5a4ad6f0ad5ed1cd5b3a23cde","acp_version":"0.2","body_available":true,"body_tokens":268,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/9c66021d-f743-4385-9f58-6a34d8ba6116.json","html":"https://stacklist.com/card/9c66021d-f743-4385-9f58-6a34d8ba6116","md":"/api/public/card/9c66021d-f743-4385-9f58-6a34d8ba6116.md","stack_json":"/api/public/stack/48af2fdd-a34c-4257-a0fc-5f7790da4b23.json"}}