diff --git a/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md b/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md
index c89cfe0..3426b43 100644
--- a/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md
+++ b/MEV_by_chains/MEV_on_Ethereum/account_abstraction/README.md
@@ -1,4 +1,4 @@
-## account abstraction
+## ERC-4337: account abstraction
 
 <br>
 
@@ -6,6 +6,10 @@
 
 <br>
 
+* an account abstraction proposal which avoids the need for consensus-layer protocol changes
+* bundlers (new actors that are either block builders, or users that can send transactions to block builders through a bundle marketplace) package up a set of objects into a tx making a call to a special contract and sending objects to a separate mempool
+
+
 <br>
 
 ### resources