A Social Filesystem — overreacted

The AT Protocol reimagines social media using a filesystem paradigm where user data lives in personal repositories as JSON records, not trapped inside apps. Each user has an 'everything folder' containing collections of records (posts, likes, follows) defined by lexicons—schemas that work like file formats. Apps become reactive views over this distributed social filesystem. Identity uses DIDs (decentralized identifiers) that survive hosting changes, enabling permanent at:// links to records. Records reference each other across users' repositories, forming a web of JSON. Apps subscribe to repository streams, cache relevant slices, and compute derived data locally. This separation means users control their data, can switch hosting providers, and multiple apps can operate on the same underlying records—making third-party experiences first-class citizens.