> ## 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. # Estimate maximum transferable value > This operation estimates the maximum transferable value from a wallet or a specific wallet address, based on the specified fee settings. The `to_address` property is required because it affects the fee calculation. This operation is applicable to Custodial Wallets (Web3 Wallets) and MPC Wallets only. 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.get_max_transferable_value_with_fee_model_request import ( GetMaxTransferableValueWithFeeModelRequest, ) from cobo_waas2.models.max_transferable_value import MaxTransferableValue 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" get_max_transferable_value_with_fee_model_request = ( cobo_waas2.GetMaxTransferableValueWithFeeModelRequest( token_id="ETH_USDT", fee=cobo_waas2.TransactionRequestFee( cobo_waas2.TransactionRequestFixedFee( fee_type="EVM_EIP_1559", token_id="TRON" ) ), to_address="2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE", ) ) try: # Estimate maximum transferable value api_response = api_instance.get_max_transferable_value_with_fee_model( wallet_id, get_max_transferable_value_with_fee_model_request=get_max_transferable_value_with_fee_model_request, ) print( "The response of WalletsApi->get_max_transferable_value_with_fee_model:\n" ) pprint(api_response) except Exception as e: print( "Exception when calling WalletsApi->get_max_transferable_value_with_fee_model: %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"); GetMaxTransferableValueWithFeeModelRequest getMaxTransferableValueWithFeeModelRequest = new GetMaxTransferableValueWithFeeModelRequest() .tokenId("ETH_USDT") .fee( new TransactionRequestFee( new TransactionRequestFixedFee().feeType(FeeType.EVM_EIP_1559).tokenId("TRON"))) .toAddress("2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE"); try { MaxTransferableValue result = apiInstance.getMaxTransferableValueWithFeeModel( walletId, getMaxTransferableValueWithFeeModelRequest); System.out.println(result); } catch (ApiException e) { System.err.println("Exception when calling WalletsApi#getMaxTransferableValueWithFeeModel"); 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" getMaxTransferableValueWithFeeModelRequest := *coboWaas2.NewGetMaxTransferableValueWithFeeModelRequest("ETH_USDT", coboWaas2.TransactionRequestFee{TransactionRequestEvmEip1559Fee: coboWaas2.NewTransactionRequestEvmEip1559Fee("9000000000000", "1000000000000", coboWaas2.FeeType("Fixed"), "ETH")}, "2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE") 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.GetMaxTransferableValueWithFeeModel(ctx, walletId). GetMaxTransferableValueWithFeeModelRequest(getMaxTransferableValueWithFeeModelRequest). Execute() if err != nil { fmt.Fprintf( os.Stderr, "Error when calling `WalletsAPI.GetMaxTransferableValueWithFeeModel``: %v\n", err, ) fmt.Fprintf(os.Stderr, "Full HTTP response: %v\n", r) } // response from `GetMaxTransferableValueWithFeeModel`: MaxTransferableValue fmt.Fprintf( os.Stdout, "Response from `WalletsAPI.GetMaxTransferableValueWithFeeModel`: %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 opts = { GetMaxTransferableValueWithFeeModelRequest: CoboWaas2.GetMaxTransferableValueWithFeeModelRequest.constructFromObject({ token_id: "ETH_USDT", fee: { fee_type: "EVM_EIP_1559", token_id: "TRON" }, to_address: "2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE", }), }; apiInstance.getMaxTransferableValueWithFeeModel(wallet_id, opts).then( (data) => { console.log("API called successfully. Returned data: " + data); }, (error) => { console.error(error); }, ); ``` ## OpenAPI ````yaml post /wallets/{wallet_id}/max_transferable_value_with_fee_model 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}/max_transferable_value_with_fee_model: parameters: - $ref: '#/components/parameters/walletIdParam' post: tags: - Wallets summary: Estimate maximum transferable value description: > This operation estimates the maximum transferable value from a wallet or a specific wallet address, based on the specified fee settings. The `to_address` property is required because it affects the fee calculation. This operation is applicable to Custodial Wallets (Web3 Wallets) and MPC Wallets only. operationId: get_max_transferable_value_with_fee_model requestBody: $ref: '#/components/requestBodies/maxTransferableValueRequestBody' responses: '201': $ref: '#/components/responses/maxTransferableValueResponse' 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 requestBodies: maxTransferableValueRequestBody: description: >- The request body for retrieving the maximum transferable value from a specified wallet. content: application/json: schema: type: object required: - token_id - fee - to_address properties: token_id: type: string description: >- The token ID of the transferred 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). For transfers from Exchange Wallets, this property value represents the asset ID. example: ETH_USDT fee: $ref: '#/components/schemas/TransactionRequestFee' to_address: type: string description: The recipient's address. example: 2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE from_address: type: string description: >- The sender's address. This property is required when using an EVM address in an MPC Wallet. example: 2N2xFZtbCFB6Nb3Pj9Sxsx5mX2fxX3yEgkE responses: maxTransferableValueResponse: description: The request was successful. content: application/json: schema: $ref: '#/components/schemas/MaxTransferableValue' 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: TransactionRequestFee: oneOf: - $ref: '#/components/schemas/TransactionRequestFixedFee' - $ref: '#/components/schemas/TransactionRequestEvmEip1559Fee' - $ref: '#/components/schemas/TransactionRequestEvmLegacyFee' - $ref: '#/components/schemas/TransactionRequestUtxoFee' - $ref: '#/components/schemas/TransactionRequestSOLFee' - $ref: '#/components/schemas/TransactionRequestFILFee' discriminator: propertyName: fee_type mapping: Fixed: $ref: '#/components/schemas/TransactionRequestFixedFee' EVM_EIP_1559: $ref: '#/components/schemas/TransactionRequestEvmEip1559Fee' EVM_Legacy: $ref: '#/components/schemas/TransactionRequestEvmLegacyFee' UTXO: $ref: '#/components/schemas/TransactionRequestUtxoFee' SOL: $ref: '#/components/schemas/TransactionRequestSOLFee' FIL: $ref: '#/components/schemas/TransactionRequestFILFee' MaxTransferableValue: type: object description: >- The maximum transferable value from the wallet or the specified address, along with the estimated transaction fee. properties: token_id: type: string 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). example: ETH max_transferable_value: type: string description: >- The maximum transferable value from the wallet or the specified address. example: '3.0' fee: $ref: '#/components/schemas/TransactionRequestFee' 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 TransactionRequestFixedFee: type: object description: > The preset properties to limit transaction fee. In the fixed fee model, the transaction fee is a fixed amount within a certain amount of period regardless of the transaction size or network congestion, which can vary between different chains. For more information about the fixed fee model, refer to [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). You can specify the maximum fee amount to limit the transaction fee. The transaction will fail if the transaction fee exceeds the specified maximum fee amount. Switch between the tabs to display the properties for different transaction fee models. title: Fixed required: - fee_type - token_id allOf: - type: object properties: fee_type: $ref: '#/components/schemas/FeeType' token_id: type: string description: The token used to pay the transaction fee. example: TRON - $ref: '#/components/schemas/MaxFeeAmount' TransactionRequestEvmEip1559Fee: type: object description: > The preset properties to limit transaction fee. For more information about the EIP-1559 fee model, refer to [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). You can specify the maximum gas fee per gas unit, maximum priority fee per gas unit, and the gas limit to limit the gas price, priority fee per gas unit, gas units used in the transaction. Switch between the tabs to display the properties for different transaction fee models. title: EVM_EIP_1559 required: - fee_type - token_id - max_fee_per_gas - max_priority_fee_per_gas allOf: - type: object properties: fee_type: $ref: '#/components/schemas/FeeType' token_id: type: string description: The token used to pay the transaction fee. example: ETH gas_limit: type: string description: >- The gas limit. It represents the maximum number of gas units that you are willing to pay for the execution of a transaction or Ethereum Virtual Machine (EVM) operation. The gas unit cost of each operation varies. example: '21000' - $ref: '#/components/schemas/EvmEip1559FeeBasePrice' TransactionRequestEvmLegacyFee: type: object description: > The preset properties to limit transaction fee. For more information about the Legacy fee model, refer to [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). You can specify the gas limit to limit the gas units used in the transaction. Switch between the tabs to display the properties for different transaction fee models. required: - fee_type - token_id - gas_price title: EVM_Legacy allOf: - type: object properties: fee_type: $ref: '#/components/schemas/FeeType' token_id: type: string description: The token used to pay the transaction fee. example: ETH gas_limit: type: string description: >- The gas limit. It represents the maximum number of gas units that you are willing to pay for the execution of a transaction or Ethereum Virtual Machine (EVM) operation. The gas unit cost of each operation varies. example: '21000' - $ref: '#/components/schemas/EvmLegacyFeeBasePrice' TransactionRequestUtxoFee: type: object description: > The preset properties to limit transaction fee. For more information about the UTXO fee model, see [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). You can specify the maximum fee amount to limit the transaction fee. The transaction will fail if the transaction fee exceeds the specified maximum fee amount. Switch between the tabs to display the properties for different transaction fee models. required: - fee_type - token_id title: UTXO allOf: - type: object properties: fee_type: $ref: '#/components/schemas/FeeType' token_id: type: string description: The token used to pay the transaction fee. example: BTC max_fee_amount: type: string description: >- The maximum fee that you are willing to pay for the transaction. Provide the value without applying precision. The transaction will fail if the transaction fee exceeds the maximum fee. example: '0.1' - $ref: '#/components/schemas/UtxoFeeBasePrice' TransactionRequestSOLFee: type: object description: > The preset properties to limit transaction fee. For more information about the SOL fee model, see [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). You can specify CU price and CU limit to adjust the priority and resource allocation of your transaction. Switch between the tabs to display the properties for different transaction fee models. title: SOL required: - fee_type - token_id - compute_unit_price - compute_unit_limit allOf: - type: object properties: fee_type: $ref: '#/components/schemas/FeeType' token_id: type: string description: The token used to pay the transaction fee. example: ETH - $ref: '#/components/schemas/SOLComputeUnit' TransactionRequestFILFee: type: object description: > The preset properties to limit transaction fee. For more information about the FIL fee model, see [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). You can specify the gas fee cap, gas premium, and gas limit to control fee behavior and prioritization. Switch between the tabs to display the properties for different transaction fee models. title: FIL required: - fee_type - token_id - gas_fee_cap - gas_premium allOf: - type: object properties: fee_type: $ref: '#/components/schemas/FeeType' token_id: type: string description: The token used to pay the transaction fee. example: ETH - $ref: '#/components/schemas/FILPrice' FeeType: type: string enum: - Fixed - EVM_EIP_1559 - EVM_Legacy - UTXO - SOL - FIL example: EVM_EIP_1559 default: EVM_EIP_1559 description: > The fee model. Possible values include: - `Fixed`: The fixed fee model. - `EVM_EIP_1559`: The EIP-1559 fee model. - `EVM_Legacy`: The legacy fee model. - `UTXO`: The fee model used in UTXO-based blockchains, such as Bitcoin. - `SOL`: The fee model used in Solana. - `FIL`: The fee model used in Filecoin. Each fee model requires a different set of properties. Switch between the above tabs for details. To learn more about the fee models, refer to [Fee models](https://www.cobo.com/developers/v2/guides/transactions/estimate-fees#fee-models). MaxFeeAmount: type: object properties: max_fee_amount: type: string description: >- The maximum fee that you are willing to pay for the transaction. Provide the value without applying precision. The transaction will fail if the transaction fee exceeds the maximum fee. example: '0.1' EvmEip1559FeeBasePrice: type: object properties: max_fee_per_gas: type: string description: The maximum gas fee per gas unit used on the chain, in wei. example: '9000000000000' max_priority_fee_per_gas: type: string description: >- The maximum priority fee per gas unit used, in wei. The maximum priority fee represents the highest amount of miner tips that you are willing to pay for your transaction. example: '1000000000000' EvmLegacyFeeBasePrice: type: object properties: gas_price: type: string description: >- The gas price, in wei. The gas price represents the amount of ETH that must be paid to validators for processing transactions per gas unit used. example: '100000000' UtxoFeeBasePrice: type: object properties: fee_rate: type: string description: >- The fee rate in sat/vByte. The fee rate represents the satoshis you are willing to pay for each byte of data that your transaction will consume on the blockchain. example: '50' SOLComputeUnit: type: object properties: compute_unit_price: type: string description: >- The price paid per compute unit. This value determines the priority fee for the transaction, allowing you to increase inclusion probability in congested conditions. example: '0.0001' compute_unit_limit: type: string description: >- The maximum number of compute units your transaction is allowed to consume. It sets an upper bound on computational resource usage to prevent overload. example: '200000' FILPrice: type: object properties: gas_premium: type: string description: >- An optional tip you can include to prioritize your transaction. The gas premium incentivizes miners to include your transaction sooner than those offering only the base fee. example: '0.0001' gas_fee_cap: type: string description: The maximum gas price you are willing to pay per unit of gas. example: '0.00035' gas_limit: type: string description: The maximum amount of gas your transaction is allowed to consume. example: '500' 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 ````