diff --git a/js/compressed-token/src/get-compressed-token-accounts.ts b/js/compressed-token/src/get-compressed-token-accounts.ts
index f184d0aa13..bf7a315311 100644
--- a/js/compressed-token/src/get-compressed-token-accounts.ts
+++ b/js/compressed-token/src/get-compressed-token-accounts.ts
@@ -60,9 +60,9 @@ async function parseEventWithTokenTlvData(
   const inputCompressedAccountWithParsedTokenData: CompressedAccountWithParsedTokenData[] =
     event.inputCompressedAccounts.map((compressedAccount, i) => {
       const merkleContext: MerkleContext = {
-        merkleTree: pubkeyArray[compressedAccount.indexMerkleTreeAccount],
+        merkleTree: pubkeyArray[compressedAccount.merkleTreePubkeyIndex],
         nullifierQueue:
-          pubkeyArray[compressedAccount.indexNullifierArrayAccount],
+          pubkeyArray[compressedAccount.nullifierQueuePubkeyIndex],
         hash: inputHashes[i],
         leafIndex: compressedAccount.leafIndex,
       };
diff --git a/js/compressed-token/src/idl/psp_compressed_token.ts b/js/compressed-token/src/idl/psp_compressed_token.ts
index c4352afea6..c9786ed97c 100644
--- a/js/compressed-token/src/idl/psp_compressed_token.ts
+++ b/js/compressed-token/src/idl/psp_compressed_token.ts
@@ -204,11 +204,11 @@ export type PspCompressedToken = {
             };
           },
           {
-            name: 'indexMerkleTreeAccount';
+            name: 'merkleTreePubkeyIndex';
             type: 'u8';
           },
           {
-            name: 'indexNullifierArrayAccount';
+            name: 'indexNullifierQueuePubkeyIndex';
             type: 'u8';
           },
           {
@@ -327,6 +327,10 @@ export type PspCompressedToken = {
               option: 'u64';
             };
           },
+          {
+            name: 'isCompress';
+            type: 'bool';
+          },
           {
             name: 'deCompressAmount';
             type: {
@@ -903,11 +907,11 @@ export const IDL: PspCompressedToken = {
             },
           },
           {
-            name: 'indexMerkleTreeAccount',
+            name: 'merkleTreePubkeyIndex',
             type: 'u8',
           },
           {
-            name: 'indexNullifierArrayAccount',
+            name: 'indexNullifierQueuePubkeyIndex',
             type: 'u8',
           },
           {
@@ -1026,6 +1030,10 @@ export const IDL: PspCompressedToken = {
               option: 'u64',
             },
           },
+          {
+            name: 'isCompress',
+            type: 'bool',
+          },
           {
             name: 'deCompressAmount',
             type: {
diff --git a/js/compressed-token/src/instructions/transfer.ts b/js/compressed-token/src/instructions/transfer.ts
index a5cc68426b..a0506c1c6b 100644
--- a/js/compressed-token/src/instructions/transfer.ts
+++ b/js/compressed-token/src/instructions/transfer.ts
@@ -52,8 +52,8 @@ export async function createTransferInstruction(
     inputCompressedAccount.data = null;
     packedInputCompressedAccountsWithMerkleContext.push({
       compressedAccount: inputCompressedAccount,
-      indexMerkleTreeAccount: remainingAccountsMap.get(mt)!,
-      indexNullifierArrayAccount: 0, // Will be set in the next loop
+      merkleTreePubkeyIndex: remainingAccountsMap.get(mt)!,
+      nullifierQueuePubkeyIndex: 0, // Will be set in the next loop
       leafIndex: inputCompressedAccount.leafIndex,
     });
   });
@@ -64,7 +64,7 @@ export async function createTransferInstruction(
     }
     packedInputCompressedAccountsWithMerkleContext[
       i
-    ].indexNullifierArrayAccount = remainingAccountsMap.get(mt)!;
+    ].nullifierQueuePubkeyIndex = remainingAccountsMap.get(mt)!;
   });
 
   outputStateTrees.forEach((mt, i) => {
diff --git a/js/stateless.js/src/idls/psp_compressed_pda.ts b/js/stateless.js/src/idls/psp_compressed_pda.ts
index 24c9904b62..474e530da3 100644
--- a/js/stateless.js/src/idls/psp_compressed_pda.ts
+++ b/js/stateless.js/src/idls/psp_compressed_pda.ts
@@ -98,11 +98,11 @@ export type PspCompressedPda = {
             };
           },
           {
-            name: 'indexMerkleTreeAccount';
+            name: 'merkleTreePubkeyIndex';
             type: 'u8';
           },
           {
-            name: 'indexNullifierArrayAccount';
+            name: 'indexNullifierQueuePubkeyIndex';
             type: 'u8';
           },
           {
@@ -221,6 +221,10 @@ export type PspCompressedPda = {
               option: 'u64';
             };
           },
+          {
+            name: 'isCompress';
+            type: 'bool';
+          },
           {
             name: 'deCompressAmount';
             type: {
@@ -556,11 +560,11 @@ export const IDL: PspCompressedPda = {
             },
           },
           {
-            name: 'indexMerkleTreeAccount',
+            name: 'merkleTreePubkeyIndex',
             type: 'u8',
           },
           {
-            name: 'indexNullifierArrayAccount',
+            name: 'indexNullifierQueuePubkeyIndex',
             type: 'u8',
           },
           {
@@ -679,6 +683,10 @@ export const IDL: PspCompressedPda = {
               option: 'u64',
             },
           },
+          {
+            name: 'isCompress',
+            type: 'bool',
+          },
           {
             name: 'deCompressAmount',
             type: {
diff --git a/js/stateless.js/src/instruction/pack-compressed-accounts.ts b/js/stateless.js/src/instruction/pack-compressed-accounts.ts
index a1a0b3c245..eb3f343d72 100644
--- a/js/stateless.js/src/instruction/pack-compressed-accounts.ts
+++ b/js/stateless.js/src/instruction/pack-compressed-accounts.ts
@@ -102,8 +102,8 @@ export function packCompressedAccounts(
         address: account.address,
         data: account.data,
       },
-      indexMerkleTreeAccount: indexMerkleTree,
-      indexNullifierArrayAccount: indexNullifierQueue,
+      merkleTreePubkeyIndex: indexMerkleTree,
+      nullifierQueuePubkeyIndex: indexNullifierQueue,
       leafIndex: account.leafIndex,
     });
   });
diff --git a/js/stateless.js/src/state/types.ts b/js/stateless.js/src/state/types.ts
index 58f9f63c0a..46746fffd5 100644
--- a/js/stateless.js/src/state/types.ts
+++ b/js/stateless.js/src/state/types.ts
@@ -4,8 +4,8 @@ import { PublicKey } from '@solana/web3.js';
 /// TODO: Consider flattening and implementing an IR in Beet.
 export interface PackedCompressedAccountWithMerkleContext {
   compressedAccount: CompressedAccount;
-  indexMerkleTreeAccount: number; // u8
-  indexNullifierArrayAccount: number; // u8
+  merkleTreePubkeyIndex: number; // u8
+  nullifierQueuePubkeyIndex: number; // u8
   leafIndex: number; // u32 FIXME: switch on-chain to u64.
   // Missing: hash
 }
@@ -43,6 +43,7 @@ export interface PublicTransactionEvent {
   outputLeafIndices: number[]; // Vec<u32>
   relayFee: BN | null; // Option<u64>
   deCompressAmount: BN | null; // Option<u64>
+  isCompress: boolean; // bool
   pubkeyArray: PublicKey[]; // Vec<PublicKey>
   message: Uint8Array | null; // Option<bytes>
 }
diff --git a/programs/compressed-pda/src/compressed_account.rs b/programs/compressed-pda/src/compressed_account.rs
index f1dd5f5477..2bd71664d0 100644
--- a/programs/compressed-pda/src/compressed_account.rs
+++ b/programs/compressed-pda/src/compressed_account.rs
@@ -5,8 +5,8 @@ use light_utils::hash_to_bn254_field_size_le;
 #[derive(Debug, PartialEq, Default, Clone, AnchorSerialize, AnchorDeserialize)]
 pub struct CompressedAccountWithMerkleContext {
     pub compressed_account: CompressedAccount,
-    pub index_merkle_tree_account: u8,
-    pub index_nullifier_array_account: u8,
+    pub merkle_tree_pubkey_index: u8,
+    pub index_nullifier_queue_pubkey_index: u8,
     pub leaf_index: u32,
 }
 
diff --git a/programs/compressed-pda/src/event.rs b/programs/compressed-pda/src/event.rs
index e3caae3e11..d7893ced19 100644
--- a/programs/compressed-pda/src/event.rs
+++ b/programs/compressed-pda/src/event.rs
@@ -20,6 +20,7 @@ pub struct PublicTransactionEvent {
     pub output_state_merkle_tree_account_indices: Vec<u8>,
     pub output_leaf_indices: Vec<u32>,
     pub relay_fee: Option<u64>,
+    pub is_compress: bool,
     pub de_compress_amount: Option<u64>,
     pub pubkey_array: Vec<Pubkey>,
     pub message: Option<Vec<u8>>,
@@ -65,6 +66,7 @@ pub fn emit_state_transition_event<'a, 'b, 'c: 'info, 'info>(
         pubkey_array: ctx.remaining_accounts.iter().map(|x| x.key()).collect(),
         de_compress_amount: None,
         message: None,
+        is_compress: false,
     };
     invoke_indexer_transaction_event(&event, &ctx.accounts.noop_program)?;
     Ok(event)
diff --git a/programs/compressed-pda/src/nullify_state.rs b/programs/compressed-pda/src/nullify_state.rs
index a8f204962c..db79ed2c78 100644
--- a/programs/compressed-pda/src/nullify_state.rs
+++ b/programs/compressed-pda/src/nullify_state.rs
@@ -15,14 +15,15 @@ pub fn insert_nullifiers<'a, 'b, 'c: 'info, 'info>(
     let state_merkle_tree_pubkeys = inputs
         .input_compressed_accounts_with_merkle_context
         .iter()
-        .map(|account| ctx.remaining_accounts[account.index_merkle_tree_account as usize].key())
+        .map(|account| ctx.remaining_accounts[account.merkle_tree_pubkey_index as usize].key())
         .collect::<Vec<Pubkey>>();
     let mut indexed_array_account_infos = Vec::<AccountInfo>::new();
     for account in inputs.input_compressed_accounts_with_merkle_context.iter() {
-        indexed_array_account_infos
-            .push(ctx.remaining_accounts[account.index_nullifier_array_account as usize].clone());
+        indexed_array_account_infos.push(
+            ctx.remaining_accounts[account.index_nullifier_queue_pubkey_index as usize].clone(),
+        );
         let unpacked_queue_account = AccountLoader::<IndexedArrayAccount>::try_from(
-            &ctx.remaining_accounts[account.index_nullifier_array_account as usize],
+            &ctx.remaining_accounts[account.index_nullifier_queue_pubkey_index as usize],
         )
         .unwrap();
         let array_account = unpacked_queue_account.load()?;
@@ -34,7 +35,7 @@ pub fn insert_nullifiers<'a, 'b, 'c: 'info, 'info>(
         if !account_is_associated_with_state_merkle_tree {
             msg!(
                 "Nullifier queue account {:?} is not associated with any state Merkle tree. Provided state Merkle trees {:?}",
-                ctx.remaining_accounts[account.index_nullifier_array_account as usize].key(), state_merkle_tree_pubkeys);
+                ctx.remaining_accounts[account.index_nullifier_queue_pubkey_index as usize].key(), state_merkle_tree_pubkeys);
             return Err(crate::ErrorCode::InvalidNullifierQueue.into());
         }
     }
diff --git a/programs/compressed-pda/src/sdk.rs b/programs/compressed-pda/src/sdk.rs
index e266997c03..e196591f16 100644
--- a/programs/compressed-pda/src/sdk.rs
+++ b/programs/compressed-pda/src/sdk.rs
@@ -42,8 +42,8 @@ pub fn create_execute_compressed_instruction(
         };
         _input_compressed_accounts.push(CompressedAccountWithMerkleContext {
             compressed_account: input_compressed_accounts[i].clone(),
-            index_merkle_tree_account: *remaining_accounts.get(mt).unwrap() as u8,
-            index_nullifier_array_account: 0,
+            merkle_tree_pubkey_index: *remaining_accounts.get(mt).unwrap() as u8,
+            index_nullifier_queue_pubkey_index: 0,
             leaf_index: input_compressed_accounts_leaf_indices[i],
         });
     }
@@ -55,7 +55,7 @@ pub fn create_execute_compressed_instruction(
                 remaining_accounts.insert(*mt, i + len);
             }
         };
-        _input_compressed_accounts[i].index_nullifier_array_account =
+        _input_compressed_accounts[i].index_nullifier_queue_pubkey_index =
             *remaining_accounts.get(mt).unwrap() as u8;
     }
     let len: usize = remaining_accounts.len();
@@ -376,36 +376,36 @@ mod test {
         assert_eq!(instruction.accounts[0], ref_account_meta);
         assert_eq!(
             deserialized_instruction_data.input_compressed_accounts_with_merkle_context[0]
-                .index_nullifier_array_account,
+                .index_nullifier_queue_pubkey_index,
             1
         );
         assert_eq!(
             deserialized_instruction_data.input_compressed_accounts_with_merkle_context[1]
-                .index_nullifier_array_account,
+                .index_nullifier_queue_pubkey_index,
             1
         );
         assert_eq!(
             instruction.accounts[7 + deserialized_instruction_data
                 .input_compressed_accounts_with_merkle_context[0]
-                .index_merkle_tree_account as usize],
+                .merkle_tree_pubkey_index as usize],
             AccountMeta::new(merkle_tree_pubkey, false)
         );
         assert_eq!(
             instruction.accounts[7 + deserialized_instruction_data
                 .input_compressed_accounts_with_merkle_context[1]
-                .index_merkle_tree_account as usize],
+                .merkle_tree_pubkey_index as usize],
             AccountMeta::new(merkle_tree_pubkey, false)
         );
         assert_eq!(
             instruction.accounts[7 + deserialized_instruction_data
                 .input_compressed_accounts_with_merkle_context[0]
-                .index_nullifier_array_account as usize],
+                .index_nullifier_queue_pubkey_index as usize],
             AccountMeta::new(nullifier_array_pubkey, false)
         );
         assert_eq!(
             instruction.accounts[7 + deserialized_instruction_data
                 .input_compressed_accounts_with_merkle_context[1]
-                .index_nullifier_array_account as usize],
+                .index_nullifier_queue_pubkey_index as usize],
             AccountMeta::new(nullifier_array_pubkey, false)
         );
         assert_eq!(
diff --git a/programs/compressed-pda/src/verify_state.rs b/programs/compressed-pda/src/verify_state.rs
index ad5be74044..5eea8edd5c 100644
--- a/programs/compressed-pda/src/verify_state.rs
+++ b/programs/compressed-pda/src/verify_state.rs
@@ -25,7 +25,7 @@ pub fn fetch_roots<'a, 'b, 'c: 'info, 'info>(
     {
         let merkle_tree = AccountLoader::<StateMerkleTreeAccount>::try_from(
             &ctx.remaining_accounts
-                [input_compressed_account_with_context.index_merkle_tree_account as usize],
+                [input_compressed_account_with_context.merkle_tree_pubkey_index as usize],
         )
         .unwrap();
         let merkle_tree = merkle_tree.load()?;
@@ -88,7 +88,7 @@ pub fn hash_input_compressed_accounts<'a, 'b, 'c: 'info, 'info>(
             .compressed_account
             .hash(
                 &ctx.remaining_accounts
-                    [input_compressed_account_with_context.index_merkle_tree_account as usize]
+                    [input_compressed_account_with_context.merkle_tree_pubkey_index as usize]
                     .key(),
                 &input_compressed_account_with_context.leaf_index,
             )?;
@@ -465,8 +465,8 @@ mod test {
                     address: None,
                     data: None,
                 },
-                index_merkle_tree_account: 0,
-                index_nullifier_array_account: 0,
+                merkle_tree_pubkey_index: 0,
+                index_nullifier_queue_pubkey_index: 0,
                 leaf_index: 0,
             },
             CompressedAccountWithMerkleContext {
@@ -476,8 +476,8 @@ mod test {
                     address: None,
                     data: None,
                 },
-                index_merkle_tree_account: 0,
-                index_nullifier_array_account: 0,
+                merkle_tree_pubkey_index: 0,
+                index_nullifier_queue_pubkey_index: 0,
                 leaf_index: 1,
             },
         ];
@@ -510,8 +510,8 @@ mod test {
                     address: None,
                     data: None,
                 },
-                index_merkle_tree_account: 0,
-                index_nullifier_array_account: 0,
+                merkle_tree_pubkey_index: 0,
+                index_nullifier_queue_pubkey_index: 0,
                 leaf_index: 0,
             },
             CompressedAccountWithMerkleContext {
@@ -521,8 +521,8 @@ mod test {
                     address: None,
                     data: None,
                 },
-                index_merkle_tree_account: 0,
-                index_nullifier_array_account: 0,
+                merkle_tree_pubkey_index: 0,
+                index_nullifier_queue_pubkey_index: 0,
                 leaf_index: 1,
             },
         ];
diff --git a/programs/compressed-pda/tests/test.rs b/programs/compressed-pda/tests/test.rs
index a19281005c..17505215d1 100644
--- a/programs/compressed-pda/tests/test.rs
+++ b/programs/compressed-pda/tests/test.rs
@@ -655,8 +655,8 @@ impl MockIndexer {
                 .push(CompressedAccountWithMerkleContext {
                     compressed_account: compressed_account.clone(),
                     leaf_index: event.output_leaf_indices[i as usize],
-                    index_merkle_tree_account: 0,
-                    index_nullifier_array_account: 0,
+                    merkle_tree_pubkey_index: 0,
+                    index_nullifier_queue_pubkey_index: 0,
                 });
             indices.push(self.compressed_accounts.len() - 1);
             self.merkle_tree
diff --git a/programs/compressed-token/src/process_transfer.rs b/programs/compressed-token/src/process_transfer.rs
index af099a0088..f6d31bac29 100644
--- a/programs/compressed-token/src/process_transfer.rs
+++ b/programs/compressed-token/src/process_transfer.rs
@@ -435,8 +435,8 @@ pub mod transfer_sdk {
             input_compressed_accounts_with_merkle_context.push(
                 CompressedAccountWithMerkleContext {
                     compressed_account: input_compressed_account,
-                    index_merkle_tree_account: *remaining_accounts.get(mt).unwrap() as u8,
-                    index_nullifier_array_account: 0,
+                    merkle_tree_pubkey_index: *remaining_accounts.get(mt).unwrap() as u8,
+                    index_nullifier_queue_pubkey_index: 0,
                     leaf_index: *leaf_index,
                 },
             );
@@ -449,7 +449,7 @@ pub mod transfer_sdk {
                     remaining_accounts.insert(*mt, i + len);
                 }
             };
-            input_compressed_accounts_with_merkle_context[i].index_nullifier_array_account =
+            input_compressed_accounts_with_merkle_context[i].index_nullifier_queue_pubkey_index =
                 *remaining_accounts.get(mt).unwrap() as u8;
         }
         let len: usize = remaining_accounts.len();
diff --git a/programs/compressed-token/tests/test.rs b/programs/compressed-token/tests/test.rs
index 1974e3ac8e..26e513e593 100644
--- a/programs/compressed-token/tests/test.rs
+++ b/programs/compressed-token/tests/test.rs
@@ -1319,8 +1319,8 @@ impl MockIndexer {
                 .push(CompressedAccountWithMerkleContext {
                     compressed_account: compressed_account.clone(),
                     leaf_index: event.output_leaf_indices[i as usize],
-                    index_merkle_tree_account: 0,
-                    index_nullifier_array_account: 0,
+                    merkle_tree_pubkey_index: 0,
+                    index_nullifier_queue_pubkey_index: 0,
                 });
             indices.push(self.compressed_accounts.len() - 1);
             self.merkle_tree