diff --git a/README.md b/README.md
index 9225b0a5b31cd9d4a067c8af9265a842b62aaaf4..53e51b2c6549a8bf58b1269ddf9ea85b227841f6 100644
--- a/README.md
+++ b/README.md
@@ -76,6 +76,9 @@ token count, plus overall metadata usage. I've used and tested them most with
   discovery of behaviour through structured conversation, iterating with the user
   to refine ideas into user stories and Gherkin scenarios. Works for any
   language or framework.
+- [in-session-review](skills/in-session-review/SKILL.md): Runs an extremely
+  strict maintainability review for abstraction quality, giant files, and
+  spaghetti-condition growth.
 - [initialising-and-updating-agents-md](skills/initialising-and-updating-agents-md/SKILL.md):
   Analyses a codebase and creates or updates `AGENTS.md` to help future agents
   work effectively. Discovers commands, conventions, patterns, and gotchas from