diff --git a/api/openapi.yml b/api/openapi.yml
index b62b93c2..6252bb4a 100644
--- a/api/openapi.yml
+++ b/api/openapi.yml
@@ -1456,6 +1456,7 @@ paths:
           required: true
           schema:
             type: string
+            x-js-format: bigint
             example: "1000000000"
         - in: query
           name: ticker
@@ -3394,6 +3395,7 @@ components:
                 example: 13
               value:
                 type: string
+                x-js-format: bigint
                 example: "10000000000"
     BlockValueFlow:
       type: object
@@ -3462,7 +3464,8 @@ components:
           format: int32
         shard:
           type: string
-          example: 8000000000000000
+          # x-js-format: bigint ???
+          example: "8000000000000000" 
         seqno:
           type: integer
           example: 21734019
@@ -3481,12 +3484,12 @@ components:
           type: array
           items:
             type: string
-            example: [ (0,4234235,8000000000000000) ]
+            example: "[ (0,4234235,8000000000000000) ]"
         parent:
           type: array
           items:
             type: string
-            example: [ (0,21734018,8000000000000000) ]
+            example: "[ (0,21734018,8000000000000000) ]"
     BlockchainBlock:
       type: object
       required:
@@ -3529,7 +3532,8 @@ components:
           format: int32
         shard:
           type: string
-          example: 8000000000000000
+          # x-js-format: bigint ???
+          example: "8000000000000000"
         seqno:
           type: integer
           example: 21734019
@@ -3750,6 +3754,7 @@ components:
           example: 5681002
         op_code:
           type: string
+          x-js-format: bigint
           example: "0xdeadbeaf"
         init:
           $ref: '#/components/schemas/StateInit'
@@ -4208,10 +4213,10 @@ components:
           example: 1000000
         zerostate_root_hash:
           type: string
-          example: 1000000
+          example: "131D0C65055F04E9C19D687B51BC70F952FD9CA6F02C2801D3B89964A779DF85"
         zerostate_file_hash:
           type: string
-          example: 1000000
+          example: "A6A0BD6608672B11B79538A50B2204E748305C12AA0DED9C16CF0006CE3AF8DB"
         version:
           type: integer
           format: int64
@@ -4328,6 +4333,7 @@ components:
           type: integer
         total_weight:
           type: string
+          x-js-format: bigint
           example: "1152921504606846800"
         list:
           type: array
@@ -4345,6 +4351,7 @@ components:
                 x-js-format: bigint
               adnl_addr:
                 type: string
+                example: "45061C1D4EC44A937D0318589E13C73D151D1CEF5D3C0E53AFBCF56A6C2FE2BD"
     Oracle:
       type: object
       required:
@@ -4541,6 +4548,8 @@ components:
           type: object
           additionalProperties:
             type: string
+            # x-js-format: bigint ???
+            # example ???
         code:
           type: string
           format: cell
@@ -4678,6 +4687,8 @@ components:
           example: 0:da6b1b6663a0e4d18cc8574ccd9db5296e367dd9324706f3bbd9eb1cd2caf0bf
         amount:
           type: string
+          # x-js-format: bigint
+          # example: "1000000" nanocoins or decimal ?
           description: "Number of nanocoins to send. Decimal string."
         payload:
           type: string
@@ -4702,8 +4713,9 @@ components:
           example: 0:da6b1b6663a0e4d18cc8574ccd9db5296e367dd9324706f3bbd9eb1cd2caf0bf
         commission:
           type: string
-          description: "Commission for the transaction. In nanocoins."
+          x-js-format: bigint
           example: "1000000"
+          description: "Commission for the transaction. In nanocoins."
         from:
           type: string
           format: address
@@ -4855,6 +4867,8 @@ components:
                     format: int64
                   amount:
                     type: string
+                    # x-js-format: bigint
+                    # example: "1000000"
         "8":
           type: object
           description: The network version and additional capabilities supported by the validators.
@@ -4994,10 +5008,16 @@ components:
           properties:
             min_stake:
               type: string
+              # x-js-format: bigint
+              # example: "1000000"
             max_stake:
               type: string
+              # x-js-format: bigint
+              # example: "1000000"
             min_total_stake:
               type: string
+              # x-js-format: bigint
+              # example: "1000000"
             max_stake_factor:
               type: integer
               format: int64
@@ -5370,7 +5390,8 @@ components:
       properties:
         balance:
           type: string
-          example: 597968399
+          x-js-format: bigint
+          example: "597968399"
         price:
           $ref: '#/components/schemas/TokenRates'
         wallet_address:
@@ -5392,7 +5413,8 @@ components:
           properties:
             amount:
               type: string
-              example: 597968399
+              x-js-format: bigint
+              example: "597968399"
             till:
               type: integer
               format: int64
@@ -5414,6 +5436,7 @@ components:
       properties:
         value:
           type: string
+          x-js-format: bigint
           example: "123000000000"
         token_name:
           type: string
@@ -5817,6 +5840,7 @@ components:
           example: "NftTransfer or 0x35d95a12"
         payload:
           type: string
+          # example ??, maybe cell?
         refund:
           $ref: '#/components/schemas/Refund'
     DomainRenewAction:
@@ -5848,6 +5872,7 @@ components:
           $ref: '#/components/schemas/AccountAddress'
         amount:
           type: string
+          x-js-format: bigint
           description: amount in minimal particles
           example: "123456789"
         type:
@@ -5878,6 +5903,7 @@ components:
           $ref: '#/components/schemas/AccountAddress'
         amount:
           type: string
+          x-js-format: bigint
           description: amount in minimal particles
           example: "123456789"
         comment:
@@ -5940,8 +5966,9 @@ components:
           example: 0:E93E7D444180608B8520C00DC664383A387356FB6E16FDDF99DBE5E1415A574B
         amount:
           type: string
+          x-js-format: bigint
+          example: "1000000000"
           description: amount in quanta of tokens
-          example: 1000000000
         comment:
           type: string
           example: "Hi! This is your salary. \nFrom accounting with love."
@@ -5967,8 +5994,9 @@ components:
           example: 0:E93E7D444180608B8520C00DC664383A387356FB6E16FDDF99DBE5E1415A574B
         amount:
           type: string
+          x-js-format: bigint
+          example: "1000000000"
           description: amount in quanta of tokens
-          example: 1000000000
         jetton:
           $ref: '#/components/schemas/JettonPreview'
     JettonMintAction:
@@ -5987,8 +6015,9 @@ components:
           example: 0:E93E7D444180608B8520C00DC664383A387356FB6E16FDDF99DBE5E1415A574B
         amount:
           type: string
+          x-js-format: bigint
+          example: "1000000000"
           description: amount in quanta of tokens
-          example: 1000000000
         jetton:
           $ref: '#/components/schemas/JettonPreview'
     ContractDeployAction:
@@ -6171,9 +6200,11 @@ components:
             - megatonfi
         amount_in:
           type: string
+          x-js-format: bigint
           example: "1660050553"
         amount_out:
           type: string
+          x-js-format: bigint
           example: "1660050553"
         ton_in:
           type: integer
@@ -6617,6 +6648,7 @@ components:
       properties:
         quantity:
           type: string
+          x-js-format: bigint
           example: "597968399"
         wallet_address:
           $ref: '#/components/schemas/AccountAddress'
@@ -6727,6 +6759,7 @@ components:
               example: "nft_transfer"
             op_code:
               type: string
+              x-js-format: bigint
               example: "0xdeadbeaf"
             decoded_body: { } # Free-form JSON value
         mode:
@@ -6844,6 +6877,7 @@ components:
           example: "nano"
         balance:
           type: string
+          x-js-format: bigint
           example: "1000000000"
         decimals:
           type: integer
@@ -6872,6 +6906,7 @@ components:
           example: true
         total_supply:
           type: string
+          x-js-format: bigint
           example: "5887105890579978"
         admin:
           $ref: '#/components/schemas/AccountAddress'
@@ -6906,6 +6941,7 @@ components:
                 $ref: '#/components/schemas/AccountAddress'
               balance:
                 type: string
+                x-js-format: bigint
                 example: "168856200518084"
                 description: balance in the smallest jetton's units
         total:
@@ -6920,12 +6956,14 @@ components:
       properties:
         custom_payload:
           type: string
-          description: "hex-encoded BoC"
+          # format: ???
           example: "b5ee9c72410212010001b40009460395b521c9251151ae7987e03c544bd275d6cd42c2d157f840beb14d5454b96718000d012205817002020328480101fd7f6a648d4f771d7f0abc1707e4e806b19de1801f65eb8c133a4cfb0c33d847000b22012004052848010147da975b922d89192f4c9b68a640daa6764ec398c93cec025e17f0c1852a711a0009220120061122012007082848010170d9fb0423cbef6c2cf1f3811a2f640daf8c9a326b6f8816c1b993e90d88e2100006220120090a28480101f6df1d75f6b9e45f224b2cb4fc2286d927d47b468b6dbf1fedc4316290ec2ae900042201200b102201200c0f2201200d"
+          description: "hex-encoded BoC"
         state_init:
           type: string
-          description: "hex-encoded BoC"
+          # format: ???
           example: "b5ee9c72410212010001b40009460395b521c9251151ae7987e03c544bd275d6cd42c2d157f840beb14d5454b96718000d012205817002020328480101fd7f6a648d4f771d7f0abc1707e4e806b19de1801f65eb8c133a4cfb0c33d847000b22012004052848010147da975b922d89192f4c9b68a640daa6764ec398c93cec025e17f0c1852a711a0009220120061122012007082848010170d9fb0423cbef6c2cf1f3811a2f640daf8c9a326b6f8816c1b993e90d88e2100006220120090a28480101f6df1d75f6b9e45f224b2cb4fc2286d927d47b468b6dbf1fedc4316290ec2ae900042201200b102201200c0f2201200d"
+          description: "hex-encoded BoC"
     AccountStaking:
       type: object
       required:
@@ -7185,7 +7223,8 @@ components:
           format: int32
         shard:
           type: string
-          example: 800000000000000
+          # x-js-format: bigint ??
+          example: "800000000000000"
         seqno:
           type: integer
           example: 30699640