{"version":"1.0","type":"card","id":"a892a3a2-bbb4-4e42-9548-9dcf38de7385","url":"https://stacklist.com/card/a892a3a2-bbb4-4e42-9548-9dcf38de7385","title":"We benchmarked an 84% token reduction. Then we open sourced the protocol.","source_url":null,"note":"Building ACP, and sitting with the part we can't solve.","image":{"url":"https://ucarecdn.com/206c196f-ab9c-401d-992a-6decc1343e47/","alt":"We benchmarked an 84% token reduction. Then we open sourced the protocol.","width":3840,"height":2400},"stack":null,"created_at":"2026-09-28T16:28:36.239Z","updated_at":null,"aco":{"summary":"Atomic Content Protocol (ACP) is an open-source structured envelope protocol that reduces token consumption for AI agents by 84-99% by pre-computing content metadata and serving it before the full page body. The protocol was benchmarked, open-sourced under MIT license, and implemented in Stacklist's Stacky MCP server to optimize how agents interact with web content.","tags":["token-reduction","atomic-content-protocol","acp","agent-optimization","web-parsing","structured-data","mcp"],"key_entities":[{"name":"Atomic Content Protocol","type":"technology","confidence":0.99},{"name":"ACP","type":"technology","confidence":0.99},{"name":"MCP","type":"technology","confidence":0.95},{"name":"Stacklist","type":"organization","confidence":0.92},{"name":"Stacky","type":"technology","confidence":0.9},{"name":"token reduction","type":"concept","confidence":0.88},{"name":"content envelope","type":"concept","confidence":0.85},{"name":"Wikipedia","type":"location","confidence":0.8}],"classification":"analysis","language":"en","confidence":0.85,"provenance":{"model":"claude-haiku-4-5","tool":"@stacklist/be@0.1.0","confidence":0.85,"timestamp":"2026-09-28T16:28:54.424Z"},"token_counts":{"approximate":1519,"cl100k":1425},"content_hash":"sha256:dc57ab5f6293cc9dc9c21e155ec04cf3a5ca6064fb0c2581a559a4e921b60419","acp_version":"0.2","body_available":true,"body_tokens":1515,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/a892a3a2-bbb4-4e42-9548-9dcf38de7385.json","html":"https://stacklist.com/card/a892a3a2-bbb4-4e42-9548-9dcf38de7385","md":"/api/public/card/a892a3a2-bbb4-4e42-9548-9dcf38de7385.md"}}