Index: CHANGELOG.md
===================================================================
--- CHANGELOG.md	(revision 544e9c2cff7bc4f99708d4cc7891946bb798614f)
+++ CHANGELOG.md	(revision 7b04d3b709bae5f43a5c7f73f2d86123a46aa1d4)
@@ -7,4 +7,9 @@
 
 ### Added
+- **FEDERATION.md (FEP-67ff).** The repository root now documents what Klonkt
+  speaks on the wire: ActivityPub S2S and C2S, WebFinger, HTTP Signatures,
+  NodeInfo 2.1, OAuth (PKCE), the activities and object types it sends and
+  receives, the Mastodon-compatible extension terms, and the FEPs it supports or
+  tracks. Helps other implementations interoperate.
 - **Messages: your poll finished.** When one of your own polls closes, Messages
   shows a "poll finished" item with the final result: a bar per option with its