> ## Documentation Index > Fetch the complete documentation index at: https://cobo.com/developers/llms.txt > Use this file to discover all available pages before exploring further. # List transaction UTXOs > The operation retrieves a list of UTXOs for a specified transaction of a wallet. You must specify the wallet, chain, and transaction hash. This operation is applicable to MPC and Custodial Web3 Wallets. Try [Cobo WaaS Skill](/v2/guides/overview/cobo-waas-skill) in your AI coding assistant (Claude Code, Cursor, etc.). Describe your needs in natural language to auto-generate production-ready SDK code and debug faster 🚀 ```python Python theme={null} import cobo_waas2 from cobo_waas2.models.list_utxos200_response import ListUtxos200Response from cobo_waas2.rest import ApiException from pprint import pprint # See configuration.py for a list of all supported configurations. configuration = cobo_waas2.Configuration( # Replace `` with your private key api_private_key="", # Select the development environment. To use the production environment, change the URL to https://api.cobo.com/v2. host="https://api.dev.cobo.com/v2", ) # Enter a context with an instance of the API client with cobo_waas2.ApiClient(configuration) as api_client: # Create an instance of the API class api_instance = cobo_waas2.WalletsApi(api_client) wallet_id = "f47ac10b-58cc-4372-a567-0e02b2c3d479" chain_id = "ETH" tx_hash = "dd7e1cecf6bbde1844ee1815b780711a1e306a718bcd23cd64401b48ef88eb83" is_change = false vout_n = 0 token_id = "ETH_USDT" address = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045" limit = 10 before = "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGmk1" after = "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGSAk" try: # List transaction UTXOs api_response = api_instance.list_transaction_utxos( wallet_id, chain_id, tx_hash, is_change=is_change, vout_n=vout_n, token_id=token_id, address=address, limit=limit, before=before, after=after, ) print("The response of WalletsApi->list_transaction_utxos:\n") pprint(api_response) except Exception as e: print("Exception when calling WalletsApi->list_transaction_utxos: %s\n" % e) ``` ```java Java theme={null} // Import classes: import com.cobo.waas2.ApiClient; import com.cobo.waas2.ApiException; import com.cobo.waas2.Configuration; import com.cobo.waas2.Env; import com.cobo.waas2.api.WalletsApi; import com.cobo.waas2.model.*; public class Example { public static void main(String[] args) { ApiClient defaultClient = Configuration.getDefaultApiClient(); // Select the development environment. To use the production environment, replace `Env.DEV` with // `Env.PROD defaultClient.setEnv(Env.DEV); // Replace `` with your private key defaultClient.setPrivKey(""); WalletsApi apiInstance = new WalletsApi(); UUID walletId = UUID.fromString("f47ac10b-58cc-4372-a567-0e02b2c3d479"); String chainId = "ETH"; String txHash = "dd7e1cecf6bbde1844ee1815b780711a1e306a718bcd23cd64401b48ef88eb83"; Boolean isChange = false; Integer voutN = 0; String tokenId = "ETH_USDT"; String address = "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045"; Integer limit = 10; String before = "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGmk1"; String after = "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGSAk"; try { ListUtxos200Response result = apiInstance.listTransactionUtxos( walletId, chainId, txHash, isChange, voutN, tokenId, address, limit, before, after); System.out.println(result); } catch (ApiException e) { System.err.println("Exception when calling WalletsApi#listTransactionUtxos"); System.err.println("Status code: " + e.getCode()); System.err.println("Reason: " + e.getResponseBody()); System.err.println("Response headers: " + e.getResponseHeaders()); e.printStackTrace(); } } } ``` ```go Go theme={null} package main import ( "context" "fmt" coboWaas2 "github.com/CoboGlobal/cobo-waas2-go-sdk/cobo_waas2" "github.com/CoboGlobal/cobo-waas2-go-sdk/cobo_waas2/crypto" "os" ) func main() { walletId := "f47ac10b-58cc-4372-a567-0e02b2c3d479" chainId := "ETH" txHash := "dd7e1cecf6bbde1844ee1815b780711a1e306a718bcd23cd64401b48ef88eb83" isChange := false voutN := int32(0) tokenId := "ETH_USDT" address := "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045" limit := int32(10) before := "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGmk1" after := "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGSAk" configuration := coboWaas2.NewConfiguration() // Initialize the API client apiClient := coboWaas2.NewAPIClient(configuration) ctx := context.Background() // Select the development environment. To use the production environment, replace coboWaas2.DevEnv with coboWaas2.ProdEnv ctx = context.WithValue(ctx, coboWaas2.ContextEnv, coboWaas2.DevEnv) // Replace `` with your private key ctx = context.WithValue(ctx, coboWaas2.ContextPortalSigner, crypto.Ed25519Signer{ Secret: "", }) resp, r, err := apiClient.WalletsAPI.ListTransactionUtxos(ctx, walletId). ChainId(chainId). TxHash(txHash). IsChange(isChange). VoutN(voutN). TokenId(tokenId). Address(address). Limit(limit). Before(before). After(after). Execute() if err != nil { fmt.Fprintf(os.Stderr, "Error when calling `WalletsAPI.ListTransactionUtxos``: %v\n", err) fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r) } // response from `ListTransactionUtxos`: ListUtxos200Response fmt.Fprintf(os.Stdout, "Response from `WalletsAPI.ListTransactionUtxos`: %v\n", resp) } ``` ```javascript JavaScript theme={null} const CoboWaas2 = require("@cobo/cobo-waas2"); // Initialize the API client const apiClient = CoboWaas2.ApiClient.instance; // Select the development environment. To use the production environment, replace `Env.DEV` with `Env.PROD` apiClient.setEnv(CoboWaas2.Env.DEV); // Replace `` with your private key apiClient.setPrivateKey(""); // Call the API const apiInstance = new CoboWaas2.WalletsApi(); const wallet_id = "f47ac10b-58cc-4372-a567-0e02b2c3d479"; const chain_id = "ETH"; const tx_hash = "dd7e1cecf6bbde1844ee1815b780711a1e306a718bcd23cd64401b48ef88eb83"; const opts = { is_change: false, vout_n: 0, token_id: "ETH_USDT", address: "0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045", limit: 10, before: "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGmk1", after: "RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGSAk", }; apiInstance.listTransactionUtxos(wallet_id, chain_id, tx_hash, opts).then( (data) => { console.log("API called successfully. Returned data: " + data); }, (error) => { console.error(error); }, ); ``` ## OpenAPI ````yaml get /wallets/{wallet_id}/transaction_utxos openapi: 3.0.3 info: title: Cobo Wallet as a Service 2.0 description: > The Cobo Wallet-as-a-Service (WaaS) 2.0 API is the latest version of Cobo's WaaS API offering. It enables you to access Cobo's full suite of crypto wallet technologies with powerful and flexible access controls. By encapsulating complex security protocols and streamlining blockchain interactions, this API allows you to concentrate on your core business activities without worrying about the safety of your assets. The WaaS 2.0 API presents the following key features: - A unified API for Cobo's [all four wallet types](https://manuals.cobo.com/en/portal/introduction#an-all-in-one-wallet-platform) - Support for 80+ chains and 3000+ tokens - A comprehensive selection of webhook events - Flexible usage models for MPC Wallets, including [Organization-Controlled Wallets](https://manuals.cobo.com/en/portal/mpc-wallets/ocw/introduction) and [User-Controlled Wallets](https://manuals.cobo.com/en/portal/mpc-wallets/ucw/introduction) - Programmatic control of smart contract wallets such as Safe{Wallet} with fine-grained access controls - Seamlessly transfer funds across multiple exchanges, including Binance, OKX, Bybit, Deribit, and more For more information about the WaaS 2.0 API, see [Introduction to WaaS 2.0](https://www.cobo.com/developers/v2/guides/overview/introduction). termsOfService: https://cobo.com/waas/tos/ license: name: Apache 2.0 url: https://www.apache.org/licenses/LICENSE-2.0.html contact: name: Cobo WaaS url: https://www.cobo.com/waas email: help@cobo.com version: 1.0.0 servers: - url: https://api.dev.cobo.com/v2 description: Development environment - url: https://api.cobo.com/v2 description: Production environment security: - CoboAuth: [] tags: - name: Organizations description: Operations related to Organizations. - name: Wallets description: Operations related to all wallets. - name: Wallets - MPC Wallets description: Operations related to mpc wallet. - name: Wallets - Exchange Wallet description: Operations related to exchange wallet. - name: Wallets - Smart Contract Wallets description: Operations related to smart contract wallet. - name: Transactions description: Operations related to all transactions. - name: Developers - Webhooks description: Operations related to webhooks. - name: Stakings description: Operations related to staking. - name: OAuth description: Operations related to OAuth. - name: Developers description: Operations related to developers. - name: AddressBooks description: Operations related to address books. - name: TravelRule description: Operations related to travel rule. - name: GraphQL description: Operations related to executing GraphQL queries and mutations. - name: PrimeBroker description: Operations related to prime broker. - name: AppWorkflows description: Operations related to app workflow. - name: FeeStation description: Operations related to fee station. - name: Payment description: Operations related to payment. - name: Batch Payouts description: Operations related to batch payouts. - name: Tokenization description: Operations related to tokenization. - name: AutoSweep description: Operations related to auto sweep. - name: Compliance description: Operations related to compliance. paths: /wallets/{wallet_id}/transaction_utxos: parameters: - $ref: '#/components/parameters/walletIdParam' get: tags: - Wallets summary: List transaction UTXOs description: > The operation retrieves a list of UTXOs for a specified transaction of a wallet. You must specify the wallet, chain, and transaction hash. This operation is applicable to MPC and Custodial Web3 Wallets. operationId: list_transaction_utxos parameters: - $ref: '#/components/parameters/requiredChainIdParam' - $ref: '#/components/parameters/requiredUtxoTxHashParam' - $ref: '#/components/parameters/optionalUtxoIsChangeParam' - $ref: '#/components/parameters/optionalUtxoVoutNParam' - $ref: '#/components/parameters/optionalTokenIdParam' - $ref: '#/components/parameters/optionalAddressParam' - $ref: '#/components/parameters/limitParam' - $ref: '#/components/parameters/beforeParam' - $ref: '#/components/parameters/afterParam' responses: '200': $ref: '#/components/responses/listUtxoResponse' 4XX: $ref: '#/components/responses/badRequestError' 5XX: $ref: '#/components/responses/internalServerError' security: - CoboAuth: [] - OAuth2: - wallet.read components: parameters: walletIdParam: name: wallet_id in: path required: true description: The wallet ID. schema: type: string format: uuid example: f47ac10b-58cc-4372-a567-0e02b2c3d479 requiredChainIdParam: name: chain_id in: query required: true description: >- The chain ID, which is the unique identifier of a blockchain. You can retrieve the IDs of all the chains you can use by calling [List enabled chains](https://www.cobo.com/developers/v2/api-references/wallets/list-enabled-chains). schema: type: string example: ETH requiredUtxoTxHashParam: name: tx_hash in: query required: true description: The transaction hash to filter UTXOs by. schema: type: string example: dd7e1cecf6bbde1844ee1815b780711a1e306a718bcd23cd64401b48ef88eb83 optionalUtxoIsChangeParam: name: is_change in: query required: false description: Filter UTXOs by whether they are change outputs. schema: type: boolean example: false optionalUtxoVoutNParam: name: vout_n in: query required: false description: The output index of the UTXO to filter by. schema: type: integer format: int32 example: 0 optionalTokenIdParam: name: token_id in: query required: false description: >- The token ID, which is the unique identifier of a token. You can retrieve the IDs of all the tokens you can use by calling [List enabled tokens](https://www.cobo.com/developers/v2/api-references/wallets/list-enabled-tokens). schema: type: string example: ETH_USDT optionalAddressParam: name: address in: query required: false schema: type: string description: The wallet address. example: '0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045' limitParam: name: limit in: query description: >- The maximum number of objects to return. For most operations, the value range is [1, 50]. required: false schema: type: integer format: int32 default: 10 example: 10 beforeParam: name: before in: query description: > A cursor indicating the position before the current page. This value is generated by Cobo and returned in the response. If you are paginating forward from the beginning, you do not need to provide it on the first request. When paginating backward (to the previous page), you should pass the before value returned from the last response. required: false schema: type: string example: RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGmk1 afterParam: name: after in: query description: > A cursor indicating the position after the current page. This value is generated by Cobo and returned in the response. You do not need to provide it on the first request. When paginating forward (to the next page), you should pass the after value returned from the last response. required: false schema: type: string example: RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGSAk responses: listUtxoResponse: description: The request was successful. content: application/json: schema: type: object properties: data: type: array items: $ref: '#/components/schemas/UTXO' pagination: $ref: '#/components/schemas/Pagination' badRequestError: description: >- Bad request. Your request contains malformed syntax or invalid parameters. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' internalServerError: description: Internal server error. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' schemas: UTXO: type: object description: The UTXO information. properties: tx_hash: type: string description: The transaction hash of the UTXO. example: dd7e1cecf6bbde1844ee1815b780711a1e306a718bcd23cd64401b48ef88eb83 vout_n: type: integer description: The output index of the UTXO. example: 0 address: type: string description: The address of the UTXO. example: 2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE token_id: type: string description: The token ID, which is the unique identifier of a token. example: BTC value: type: string description: The value of the UTXO. example: '0.5' is_coinbase: type: boolean description: Whether the UTXO comes from a coinbase transaction. example: false is_locked: type: boolean description: Whether the UTXO is locked. example: false confirmed_number: type: integer description: The number of confirmations for the UTXO. example: 66716 is_frozen: type: boolean description: Whether the UTXO is frozen. example: false is_change: type: boolean description: Whether the UTXO is a change output of a transaction. example: false chain_id: type: string description: The chain ID, which is the unique identifier of a blockchain. example: BTC object_id: type: string description: The ID of the blockchain object to spend (e.g., SUI Coin object). example: '0x11af4b844ff94b3fbef6e36b518da3ad4c5856fa686464524a876b463d129760' version: type: string description: Object version number. example: '1' Pagination: type: object description: The pagination information of the returned data. required: - before - after - total_count properties: before: type: string example: RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGmk1 description: > An object ID used to retrieve records before the specified object, indicating earlier or smaller records relative to the current dataset. You can use it to paginate backwards. If empty, it means you have reached the start of the data. Most API endpoints sort by object ID, but some use other fields depending on the endpoint. after: type: string example: RqeEoTkgKG5rpzqYzg2Hd3szmPoj2cE7w5jWwShz3C1vyGSAk description: > An object ID used to retrieve records after the specified object, indicating newer or larger records relative to the current dataset. You can use it to paginate forwards. If empty, it means you have reached the end of the data. Most API endpoints sort by object ID, but some use other fields depending on the endpoint. total_count: type: integer example: 10000 description: >- The total number of records that match the query criteria, unaffected by the pagination parameters (`before` , `after`, and `limit`). ErrorResponse: type: object description: The response of a failed request. required: - error_code - error_message - error_id properties: error_code: type: integer description: >- The error code. Refer to [Error codes and status codes](https://www.cobo.com/developers/v2/api-references/error-codes) for more details. error_message: type: string description: The error description. error_id: type: string description: >- The error log ID. You can provide the error ID when submitting a ticket to help Cobo to locate the issue. example: 0b6ddf19083c4bd1a9ca01bec44b24dd securitySchemes: CoboAuth: type: apiKey in: header name: BIZ-API-KEY description: > The API key. For more details, refer to [API key](https://www.cobo.com/developers/v2/guides/overview/cobo-auth#api-key). In the API playground, enter your [API secret](https://www.cobo.com/developers/v2/guides/overview/cobo-auth#api-secret), and your API key will be accordingly calculated. OAuth2: type: oauth2 description: >- The [Org Access Token](https://www.cobo.com/developers/v2/apps/org-access-tokens). Use this authorization method only if you are developing Cobo Portal Apps for installation and use across different organizations. flows: authorizationCode: authorizationUrl: https://auth.cobo.com/authorize tokenUrl: https://auth.cobo.com/oauth/token scopes: address_book.read: Read address book api_key.read: Read API key information callback.read: Read callback message callback.resend: Resend callback message wallet.create: Create wallet wallet.read: Read wallet information wallet.update: Update wallet information wallet.delete: Delete wallet information wallet.create_address: Create wallet address wallet.manage_utxo: Manage UTXO mpc_project.create: Create MPC project mpc_project.read: Read MPC project information mpc_project.update: Update MPC project information mpc_vault.create: Create MPC Vault mpc_vault.read: Read MPC Vault information mpc_vault.update: Update MPC Vault information mpc_key_group.create: Create MPC key group mpc_key_group.read: Read MPC key group information mpc_key_group.update: Update MPC key group information mpc_key_group.delete: Delete MPC key group information transaction.read: Read transaction information transaction.withdraw: Make withdrawals transaction.estimate_fee: Estimate transaction fee transaction.contract_call: Initiate contract calls transaction.message_sign: Initiate message signings transaction.stake: Stake assets transaction.unstake: Unstake assets transaction.unstake_withdraw: Withdraw unstaked assets transaction.manage: Manage ongoing transactions transaction.update: Update transaction notes travel_rule.read: Read travel rule information travel_rule.edit: Edit travel rule information webhook.read: Read webhook URLs/events webhook.edit: Edit webhook URLs webhook.resend: Resend webhook events payment_orders_payin.create: Create pay-in order payment_orders_payin.read: Read pay-in order information payment_orders_payin.update: Update pay-in order payment_orders_refund.create: Create payment refund order payment_orders_refund.read: Read payment refund order information payment_settlement.create: Create payment settlement request payment_settlement.read: Read payment settlement request information payment_merchant.create: Create payment merchant payment_merchant.read: Read payment merchant information payment_merchant.update: Update payment merchant payment_forced_sweep.create: Create payment force sweep request payment_forced_sweep.read: Read payment force sweep request information compliance_funds.refund: Refund compliance funds request compliance_funds.isolate: Isolate compliance funds request compliance_funds.unfreeze: Unfreeze compliance funds request compliance_funds.read: Read compliance funds request information compliance_kyt_review.update: Update KYT review status compliance_kyt_decisions.update: Update KYT decision status compliance_kyt_status.read: Read KYT screening status compliance_kya_screenings.create: Create KYA address screening requests compliance_kya_screenings.read: Read KYA address screening results ````