> ## Documentation Index > Fetch the complete documentation index at: https://developers.circle.com/llms.txt > Use this file to discover all available pages before exploring further. # Get the lowest nonce pending transaction for a wallet > For a nonce-supported blockchain, get the lowest nonce transaction that's in QUEUED or SENT or STUCK state for the provided wallet. ## OpenAPI ````yaml openapi/developer-controlled-wallets.yaml get /v1/w3s/transactions/lowestNonceTransaction openapi: 3.0.3 info: version: '1.0' title: Developer-Controlled Wallets description: Developer-Controlled Wallets API documentation. servers: - url: https://api.circle.com security: - BearerAuth: [] tags: - name: Wallet Sets - name: Wallets - name: Signing - name: Transactions - name: Token Lookup paths: /v1/w3s/transactions/lowestNonceTransaction: get: tags: - Transactions summary: Get the lowest nonce pending transaction for a wallet description: >- For a nonce-supported blockchain, get the lowest nonce transaction that's in QUEUED or SENT or STUCK state for the provided wallet. operationId: getLowestNonceTransaction parameters: - $ref: '#/components/parameters/Blockchain' - $ref: '#/components/parameters/WalletAddress' - $ref: '#/components/parameters/WalletId' responses: '200': content: application/json: schema: $ref: '#/components/schemas/GetLowestNonceTransactionResponse' description: The lowest nonce transaction is fetched headers: X-Request-Id: $ref: '#/components/headers/XRequestId' '204': description: no corresponding transaction headers: X-Request-Id: $ref: '#/components/headers/XRequestId' '400': $ref: '#/components/responses/DefaultError' '401': $ref: '#/components/responses/NotAuthorized' security: - BearerAuth: [] components: parameters: Blockchain: name: blockchain description: Filter by blockchain. in: query schema: $ref: '#/components/schemas/Blockchain' WalletAddress: name: address description: Filter by the blockchain address of the wallet. in: query schema: $ref: '#/components/schemas/Address' WalletId: name: walletId description: Filter by the wallet ID in: query schema: type: string format: uuid example: a0eebc99-9c0b-4ef8-bb6d-6bb9bd380a11 schemas: GetLowestNonceTransactionResponse: title: GetLowestNonceTransactionResponse type: object required: - data properties: data: type: object required: - transaction - feeInfo properties: transaction: $ref: '#/components/schemas/Transaction' feeInfo: $ref: '#/components/schemas/LowestNonceTransactionFeeInfo' Blockchain: type: string description: >- The blockchain network that the resource is to be created on or is currently on. enum: - ETH - ETH-SEPOLIA - AVAX - AVAX-FUJI - MATIC - MATIC-AMOY - SOL - SOL-DEVNET - ARB - ARB-SEPOLIA - NEAR - NEAR-TESTNET - EVM - EVM-TESTNET - UNI - UNI-SEPOLIA - BASE - BASE-SEPOLIA - OP - OP-SEPOLIA - APTOS - APTOS-TESTNET - ARC-TESTNET - MONAD - MONAD-TESTNET example: MATIC-AMOY Address: title: Address description: > Blockchain generated unique identifier, associated with wallet (account), smart contract or other blockchain objects. type: string example: '0xca9142d0b9804ef5e239d3bc1c7aa0d1c74e7350' Transaction: title: Transaction type: object required: - id - state - blockchain - transactionType - createDate - updateDate properties: id: $ref: '#/components/schemas/Id' abiFunctionSignature: $ref: '#/components/schemas/AbiFunctionSignature' abiParameters: $ref: '#/components/schemas/AbiParameters' amounts: $ref: '#/components/schemas/TransferAmounts' amountInUSD: type: string description: Transaction amount in USD decimal format. blockHash: type: string description: Identifier for the block that includes the transaction. blockHeight: type: integer description: >- Block height of the transaction, representing the number of blockchain confirmations. blockchain: $ref: '#/components/schemas/Blockchain' contractAddress: $ref: '#/components/schemas/ContractAddress' createDate: $ref: '#/components/schemas/CreateDate' custodyType: $ref: '#/components/schemas/CustodyType' destinationAddress: $ref: '#/components/schemas/Address' errorReason: type: string description: >- Description of the error. Only present for transactions in `FAILED` state. errorDetails: type: string description: >- Additional detail associated with the corresponding transaction's error reason estimatedFee: $ref: '#/components/schemas/TransactionFee' description: > The estimated fee for the transaction. For Get Transactions API, this will only be returned if transaction type is used in the request query parameters feeLevel: $ref: '#/components/schemas/FeeLevel' description: >- Defines the blockchain fee level which will be paid for the transaction e.g. LOW, MEDIUM, HIGH. For Get Transactions API, this will only be returned if transaction type is used in the request query parameters firstConfirmDate: type: string format: date-time description: >- Date the transaction was first confirmed in a block. ISO-8601 UTC date/time. example: '2021-05-18T00:00:00Z' networkFee: type: string description: Gas fee, in native token, paid to the network for the transaction. networkFeeInUSD: type: string description: Gas fee, in USD, paid to the network for the transaction. nfts: type: array description: >- List of Nfts, in JSON string format, associated with the transaction. example: - '[{"ntfTokenId":"12321"' - >- "metadata":"ipfs://QmZcH4YvBVVRJtdn4RdbaqgspFU8gH6P9vomDpBVpAL3u4/1"} - '{"ntfTokenId":"12322"' - >- "metadata":"ipfs://QmZcH4YvBVVRJtdn4RdbaqgspFU8gH6P9vomDpBVpAL3u4/2"}] items: type: string operation: $ref: '#/components/schemas/Operation' refId: $ref: '#/components/schemas/TransactionReferenceId' sourceAddress: $ref: '#/components/schemas/Address' state: $ref: '#/components/schemas/TransactionState' tokenId: $ref: '#/components/schemas/Id' transactionType: $ref: '#/components/schemas/TransactionType' txHash: $ref: '#/components/schemas/TransactionHash' updateDate: $ref: '#/components/schemas/UpdateDate' userId: $ref: '#/components/schemas/ExternalUserId' walletId: $ref: '#/components/schemas/Id' transactionScreeningEvaluation: $ref: '#/components/schemas/TransactionScreeningDecision' description: >- This field is optional and applicable to Compliance Engine customers only. LowestNonceTransactionFeeInfo: title: LowestNonceTransactionFeeInfo type: object required: - newHighEstimatedFee - feeDifferenceAmount properties: newHighEstimatedFee: $ref: '#/components/schemas/TransactionFee' description: | The latest HIGH estimated fee for the transaction. feeDifferenceAmount: type: string description: >- Difference between new HIGH estimation and transaction's existing estimated fee, in native token amount unit, for example ETH example: '0.1' XRequestId: type: string format: uuid description: >- A unique identifier, which can be helpful for identifying a request when communicating with Circle support. example: 2adba88e-9d63-44bc-b975-9b6ae3440dde Error: title: Error type: object required: - code - message properties: code: type: integer description: Code that corresponds to the error. message: type: string description: Message that describes the error. Id: type: string format: uuid description: System-generated unique identifier of the resource. example: c4d1da72-111e-4d52-bdbf-2e74a2d803d5 AbiFunctionSignature: title: AbiFunctionSignature type: string description: "The contract ABI function signature or\_`callData`\_field is required for interacting with the smart contract. The ABI function signature cannot be used simultaneously with\_`callData`. e.g. burn(uint256)" example: burn(uint256) AbiParameters: title: AbiParameters type: array items: anyOf: - type: string - type: integer - type: boolean - type: array items: {} description: "The contract ABI function signature parameters for executing the contract interaction. Supported parameter types include string, integer, boolean, and array. These parameters should be used exclusively with the abiFunctionSignature and cannot be used with\_`callData`." example: - '100' - '1' TransferAmounts: title: TransferAmounts type: array items: type: string description: >- Transfer amounts in decimal number format, at least one element is required for transfer. For ERC721 token transfer, the amounts field is required to be ["1"] (array with "1" as the only element). example: - '6.62607015' ContractAddress: title: ContractAddress description: The blockchain address of the contract to be executed. type: string example: '0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48' CreateDate: type: string format: date-time description: Date and time the resource was created, in ISO-8601 UTC format. example: '2023-01-01T12:04:05Z' CustodyType: type: string description: > Describes who controls the digital assets in a wallet: either the end-user or the developer. enum: - DEVELOPER - ENDUSER TransactionFee: type: object properties: gasLimit: $ref: '#/components/schemas/GasLimit' gasPrice: $ref: '#/components/schemas/GasPrice' maxFee: $ref: '#/components/schemas/MaxFee' priorityFee: $ref: '#/components/schemas/PriorityFee' baseFee: $ref: '#/components/schemas/BaseFee' networkFee: $ref: '#/components/schemas/NetworkFee' networkFeeRaw: $ref: '#/components/schemas/NetworkFeeRaw' l1Fee: $ref: '#/components/schemas/L1Fee' FeeLevel: type: string enum: - LOW - MEDIUM - HIGH example: MEDIUM description: > A dynamic blockchain fee level setting (`LOW`, `MEDIUM`, or `HIGH`) that will be used to pay gas for the transaction. Calculated based on network traffic, supply of validators, and demand for transaction verification. Cannot be used with `gasPrice`, `priorityFee`, or `maxFee`. Estimates for each fee level can be obtained through the [`POST /transactions/transfer/estimateFee`](/api-reference/w3s/developer-controlled-wallets/create-transfer-estimate-fee) API. Operation: title: Operation type: string enum: - TRANSFER - CONTRACT_EXECUTION - CONTRACT_DEPLOYMENT description: Operation type of the transaction. TransactionReferenceId: type: string example: grouptransaction123 description: Optional reference or description used to identify the transaction. TransactionState: title: TransactionState type: string description: Current state of the transaction. enum: - INITIATED - CLEARED - QUEUED - SENT - STUCK - CONFIRMED - COMPLETE - FAILED - DENIED - CANCELLED TransactionType: title: TransactionType type: string enum: - INBOUND - OUTBOUND TransactionHash: type: string description: Blockchain generated identifier of the transaction. example: '0x4a25cc5e661d8504b59c5f38ba93f010e8518966f00e2ceda7955c4b8621357d' UpdateDate: type: string format: date-time description: Date and time the resource was last updated, in ISO-8601 UTC format. example: '2023-01-01T12:04:05Z' ExternalUserId: type: string description: Unique system generated identifier for the user. example: ext_user_id_1 maxLength: 50 minLength: 5 TransactionScreeningDecision: type: object description: >- Transaction decision detail about matched rule, actions to take, and all related risk signals. allOf: - $ref: '#/components/schemas/BaseScreeningDecision' - type: object properties: reasons: type: array description: >- Risk signals found include source, value, and type of the signal. It also contains risk score and risk category. items: $ref: '#/components/schemas/RiskSignal' GasLimit: type: string description: > The maximum units of gas to use for the transaction. Required if `feeLevel` is not provided. Estimates for this limit can be obtained through the [`POST /transactions/transfer/estimateFee`](/api-reference/w3s/developer-controlled-wallets/create-transfer-estimate-fee) API. An insufficient gas limit may cause the transaction to fail on-chain. Use this field with care when manually providing values. GasLimit override (only supported for EOA wallets): Using `gasLimit` together with `feeLevel`, the provided `gasLimit` will override the estimation's gasLimit. example: '21000' GasPrice: type: string description: > For blockchains without EIP-1559 support, the maximum price of gas, in gwei, to use per each unit of gas (see `gasLimit`). Requires `gasLimit`. Cannot be used with `feeLevel`, `priorityFee`, or `maxFee`. Estimates for this fee can be obtained through the [`POST /transactions/transfer/estimateFee`](/api-reference/w3s/developer-controlled-wallets/create-transfer-estimate-fee) API. The wallet service enforces a dynamic minimum `gasPrice` based on current network conditions. Requests specifying a `gasPrice` below this minimum will be rejected MaxFee: type: string example: '5.935224468' description: > For blockchains with EIP-1559 support, the maximum price per unit of gas (see `gasLimit`), in gwei. Requires `priorityFee`, and `gasLimit` to be present. Cannot be used with `feeLevel` or `gasPrice`. Estimates for this fee can be obtained through the [`POST /transactions/transfer/estimateFee`](/api-reference/w3s/developer-controlled-wallets/create-transfer-estimate-fee) API. PriorityFee: type: string example: '1.022783914' description: > For blockchains with EIP-1559 support, the “tip”, in gwei, to add to the base fee as an incentive for validators. Please note that the `maxFee` and `gasLimit` parameters are required alongside the `priorityFee`. The `feeLevel` and `gasPrice` parameters cannot be used with the `priorityFee`. Estimations for this fee can be obtained through the [`POST /transactions/transfer/estimateFee`](/api-reference/w3s/developer-controlled-wallets/create-transfer-estimate-fee) API. The wallet service enforces a dynamic minimum `priorityFee` based on current network conditions. Requests specifying a `priorityFee` below this minimum will be rejected BaseFee: type: string example: '1.022783914' description: > For blockchains with EIP-1559 support, the estimated base fee represents the minimum fee required for a transaction to be included in a block on the blockchain. It is measured in gwei and compensates for the computational resources validators consume to process the transaction. The base fee is supplemented by a separate "tip" called the priority fee, which acts as an extra incentive for validators to prioritize the transaction. The priority fee is added to the base fee to calculate the final transaction fee. NetworkFee: type: string example: '0.0001246397138' description: > The estimated network fee is the maximum amount of cryptocurrency (such as ETH, ARB, or SOL) that you will pay for your transaction. This fee depends on the parameters you set, including Gas Limit, Priority Fee, and Max Fee. It compensates for the computational resources that validators consume to process the transaction. It is measured in native token such as ETH, SOL. For blockchains with L1 data fees such as OP/BASE, the network fee is a combination of the Execution Gas Fee and the L1 Data Fee. Each blockchain might use different formula for network fee. Refer to each specific blockchain's documentation to understand how `networkFee` is calculated. NetworkFeeRaw: type: string example: '0.0001246397138' description: > Similar to `networkFee`, `networkFeeRaw` is an estimation with lower buffer and thus should be closer to the actual on-chain expense. This field will only be returned in the estimation response. L1Fee: type: string example: '0.000000000000140021' description: > This fee represents the Layer 1 (L1) rollup charge associated with transactions on Layer 2 blockchains. The amount is expressed in the native currency, such as ETH. This field is relevant for Layer 2 blockchains utilizing a rollup mechanism and for specific account types, such as externally owned accounts (EOAs) on the Optimism (OP) blockchain. BaseScreeningDecision: type: object description: >- Screening decision detail about matched rule, actions to take, and all related risk signals. required: - screeningDate properties: ruleName: type: string description: Name of the matched rule found in screening. example: Low Gambling Risk (Owner) actions: type: array description: Actions to take for the decision. items: $ref: '#/components/schemas/RiskAction' example: - REVIEW screeningDate: $ref: '#/components/schemas/CreateDate' RiskSignal: type: object description: >- Risk signal that includes source, value, and risk type, risk score and risk category. required: - source - sourceValue - riskScore - riskCategories - type properties: source: type: string description: Source of the risk signal. enum: - ADDRESS - BLOCKCHAIN - ASSET example: ADDRESS sourceValue: type: string description: >- Value of the source. For example, if source is “ADDRESS”. The source value would be an blockchain address. example: '0x1bf9ad0cc2ad298c69a2995aa806ee832788218c' riskScore: $ref: '#/components/schemas/RiskScore' riskCategories: type: array description: List of risk categories for the signal. items: $ref: '#/components/schemas/RiskCategory' example: - GAMBLING type: $ref: '#/components/schemas/RiskType' RiskAction: type: string description: An action to to take for the decision. enum: - APPROVE - REVIEW - FREEZE_WALLET - DENY example: REVIEW RiskScore: type: string description: Risk score of the signal. enum: - UNKNOWN - LOW - MEDIUM - HIGH - SEVERE - BLOCKLIST example: LOW RiskCategory: type: string description: The category of the associated risk of the blockchain address. enum: - SANCTIONS - CSAM - ILLICIT_BEHAVIOR - GAMBLING - TERRORIST_FINANCING - UNSUPPORTED - FROZEN - OTHER - HIGH_RISK_INDUSTRY - PEP - TRUSTED - HACKING - HUMAN_TRAFFICKING - SPECIAL_MEASURES example: GAMBLING RiskType: type: string description: Type of the signal. enum: - OWNERSHIP - COUNTERPARTY - INDIRECT example: OWNERSHIP headers: XRequestId: description: > Developer-provided header parameter or Circle-generated universally unique identifier (UUID v4). Useful for identifying a specific request when communicating with Circle Support. schema: $ref: '#/components/schemas/XRequestId' responses: DefaultError: content: application/json: schema: $ref: '#/components/schemas/Error' description: Error response headers: X-Request-Id: $ref: '#/components/headers/XRequestId' NotAuthorized: content: application/json: schema: type: object title: NotAuthorizedResponse required: - code - message properties: code: type: integer description: Code that corresponds to the error. message: type: string description: Message that describes the error. example: code: 401 message: Malformed authorization. description: >- Request has not been applied because it lacks valid authentication credentials. headers: X-Request-Id: $ref: '#/components/headers/XRequestId' securitySchemes: BearerAuth: type: http scheme: bearer bearerFormat: PREFIX:ID:SECRET description: >- Circle's API Keys are formatted in the following structure "PREFIX:ID:SECRET". All three parts are required to make a successful request. ````