diff --git a/README.md b/README.md
index 9e1045ba..6c618412 100644
--- a/README.md
+++ b/README.md
@@ -88,23 +88,6 @@ system closure. Off by default (the toplevels are pinned to
 Alternatively warm the store manually:
 `nix build git+https://forge.darkest.space/hyperhive/hyperhive#agent-base-toplevel`.
 
-Optional: set `hyperhive.domain = "example.com";` to define the
-canonical hostname for hyperhive subsystems that need a stable public
-name. No default — subsystems that require it (currently:
-`hyperhive.matrix`) assert non-null at eval time with a clear error
-message if it is missing.
-
-Optional: set `hyperhive.matrix.enable = true;` to spin up a private
-[matrix-tuwunel](https://github.com/matrix-construct/tuwunel) homeserver
-in a nixos-container. Requires either `hyperhive.domain` or
-`hyperhive.matrix.serverName` to be set (eval fails with a clear error
-if both are absent). The `server_name` (embedded irrevocably in every
-user and room ID) defaults to `matrix.<domain>`; override with
-`hyperhive.matrix.serverName = "chat.example.com";` if needed. State
-lives at `/var/lib/nixos-containers/hive-matrix/`. Federation is
-enabled with an empty `trusted_servers` list; e2ee is deferred to
-a follow-up (#551).
-
 ## Agent configuration
 
 Per-agent settings live in each agent's `agent.nix` and are synced to