diff --git a/CLAUDE.md b/CLAUDE.md
index 907c2cf..ee43bf4 100644
--- a/CLAUDE.md
+++ b/CLAUDE.md
@@ -25,6 +25,10 @@ Saves are LZString `compressToBase64` of a JSON object (not plain base64). Uses
 
 Key top-level sections: `resource`, `race`, `tech`, `city`, `space`, `civic`, `genes`, `prestige`, `settings`, `arpa`.
 
+### Prestige structure (`prestige.<name>`)
+- `count`: current value
+- Prestige currencies: `Plasmid`, `AntiPlasmid`, `Phage`, `Dark`, `Harmony`, `AICore`, `Artifact`, `Blood_Stone`, `Supercoiled`
+
 ### Resource structure (`resource.<name>`)
 - `amount`: current value
 - `max`: storage cap. `> 0` = capped, `-1` = unlimited (crafted), `-2` = special/uncapped, `0` = not unlocked