diff --git a/src/common/ant-ao.ts b/src/common/ant-ao.ts
index 7e62e6f3..adfefea9 100644
--- a/src/common/ant-ao.ts
+++ b/src/common/ant-ao.ts
@@ -156,9 +156,8 @@ export class AoANTReadable implements AoANTRead {
     return info.Ticker;
   }
 
-  // TODO: are balances needed to comply with Token spec
   /**
-   * @returns {Promise<Record<string, number>>} The balances of the ANT
+   * @returns {Promise<Record<WalletAddress, number>>} The balances of the ANT
    * @example
    * The current balances of the ANT.
    * ```ts
diff --git a/src/io.ts b/src/io.ts
index e60ba309..8948fb5a 100644
--- a/src/io.ts
+++ b/src/io.ts
@@ -259,7 +259,8 @@ export interface AoANTRead {
   getControllers(): Promise<WalletAddress[]>;
   getTicker(): Promise<string>;
   getName(): Promise<string>;
-  // TODO: balance apis necessary?
+  getBalance({ address }: { address: WalletAddress }): Promise<number>;
+  getBalances(): Promise<Record<WalletAddress, number>>;
 }
 
 export interface AoANTWrite extends AoANTRead {