{"version":"1.0","type":"card","id":"cc6e8b80-7243-4be9-aa36-2db041a93c8a","url":"https://stacklist.com/card/cc6e8b80-7243-4be9-aa36-2db041a93c8a","title":"We benchmarked an 84% token reduction. Then we open sourced the protocol.","source_url":"https://www.stacklist.com/blog/launching-acp-open-source","note":"Meet ACP (Atomic Content Protocol). The open standard designed to help AI agents read content with far fewer tokens.","image":{"url":"https://ucarecdn.com/1c948610-b431-4b3e-b40c-b7bdfcea97b8/","alt":"We benchmarked an 84% token reduction. Then we open sourced the protocol.","width":2048,"height":1274},"stack":{"id":"87f6b8a4-adac-4a0f-b653-c7c70bbc2cdf","title":"What’s Shipping","url":"https://stacklist.com/stack/87f6b8a4-adac-4a0f-b653-c7c70bbc2cdf"},"created_at":"2026-06-05T18:31:43.448Z","updated_at":null,"aco":{"summary":"ACP (Atomic Content Protocol) is an open standard designed to help AI agents read content with 84% fewer tokens by providing shared enrichment metadata. Stacklist has open sourced this protocol to enable different systems to communicate content structure without proprietary integrations.","tags":["acp","open-source","protocol","ai-agents","token-reduction","content-enrichment","stacklist"],"key_entities":[{"name":"ACP (Atomic Content Protocol)","type":"technology","confidence":0.99},{"name":"Stacklist","type":"organization","confidence":0.99},{"name":"Martina","type":"person","confidence":0.85},{"name":"Kyle","type":"person","confidence":0.85},{"name":"SMTP","type":"technology","confidence":0.95},{"name":"token-reduction","type":"concept","confidence":0.95},{"name":"AI-agents","type":"concept","confidence":0.98},{"name":"JSON-LD","type":"technology","confidence":0.9}],"classification":"memo","language":"en","confidence":0.85,"provenance":{"model":"claude-haiku-4-5","tool":"@stacklist/be@0.1.0","confidence":0.85,"timestamp":"2026-06-05T18:31:48.377Z"},"token_counts":{"approximate":1119,"cl100k":998},"content_hash":"sha256:9e834c30987acdce44eccb8f62ff8a9f05aceff1eec14f417e18bd13097256aa","acp_version":"0.2","body_available":true,"body_tokens":1119,"visibility":"public","agent_accessible":true,"status":"final"},"_links":{"self":"/api/public/card/cc6e8b80-7243-4be9-aa36-2db041a93c8a.json","html":"https://stacklist.com/card/cc6e8b80-7243-4be9-aa36-2db041a93c8a","md":"/api/public/card/cc6e8b80-7243-4be9-aa36-2db041a93c8a.md","stack_json":"/api/public/stack/87f6b8a4-adac-4a0f-b653-c7c70bbc2cdf.json"}}