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-# About
+# community.lexicon.* — Lexicon Community lexicons
 
-This repository houses the `community.lexicon.*` NSID as part of the larger [ATProtocol](https://atproto.com/) lexicon ecosystem.
+This repository is the canonical home of the `community.lexicon.*` lexicons: collectively
+owned [AT Protocol](https://atproto.com/) schema definitions, stewarded by the
+[Lexicon Community](https://lexicon.community/). Lexicons are the schema files that give AT
+Protocol records their shape; this namespace exists so that shared, general-purpose schemas
+don't have to live under any single company's name.
 
-# Governance
+The `main` branch is production: merged lexicons are published and resolvable on the AT
+Protocol network.
 
-See [lexicon-community/governance](https://github.com/lexicon-community/governance)
+## Source of truth
+
+The source of truth for this repository is
+[tangled.org/lexicon.community/lexicons](https://tangled.org/lexicon.community/lexicons).
+The GitHub repository
+([github.com/lexicon-community/lexicon](https://github.com/lexicon-community/lexicon)) is a
+mirror.
+
+## What's here
+
+Lexicon JSON documents under `community/lexicon/<namespace>/`:
+
+| Namespace | Covers |
+|-----------|--------|
+| `app` | App profiles, listings, and localization |
+| `bookmarks` | Bookmarks and bookmark queries |
+| `calendar` | Calendar events and RSVPs |
+| `interaction` | Generic interactions (likes) |
+| `location` | Physical locations: addresses, coordinates, H3 cells, Foursquare POIs |
+| `payments` | Web Monetization declaration |
+| `preference` | User preferences on AI use of public data |
+
+## Website and documentation
+
+[lexicon.community](https://lexicon.community/) is the home for Lexicon Community
+documentation and governance. Individual lexicons can be browsed on
+[Lexicon Garden](https://lexicon.garden/), an independent lexicon browser and validator.
+
+## Governance and contributing
+
+Lexicon Community is a volunteer-run working group governed by a Technical Steering
+Committee, with decisions made in the open. Proposals and discussion happen on the
+[Lexicon Community forum](https://discourse.atmosphere.community/c/lexicon-community/31) —
+bring the lexicon you wish existed, and the application, SDK, or tool that would use it.
+
+## License
+
+[MIT](LICENSE) — copyright Lexicon Community. Every schema in this repository is free to
+use, fork, and remix.