Actions113
- blocks Actions
- Get Block Details By Block Hash UTXOs
- List Transactions by Block Hash EVM
- List Transactions by Block Hash UTXOs
- List Transactions By Block Hash XRP
- List Transactions By Block Height XRP
- List Transactions by Block Height EVM
- List Transactions by Block Height UTXOs
- Get Block Details By Block Height UTXOs
- Get Block Details By Block Height EVM
- Get Block Details By Block Height XRP
- Get Block Details By Block Hash EVM
- Get Block Details By Block Hash XRP
- Get Last Mined Block EVM
- Get Last Mined Block UTXOs
- Get Latest Mined Block XRP
- List Latest Mined Blocks UTXOs
- List Latest Mined Blocks EVM
- List Latest Mined Blocks XRP
- HD Wallets Actions
- Sync HD Wallet (xPub, yPub, zPub)
- Derive And Sync New Receiving Addresses UTXO
- Derive And Sync New Change Addresses UTXO
- Derive And Sync New Receiving Addresses EVM
- Derive And Sync New Receiving Addresses XRP
- List Synced Addresses UTXO
- List Synced Addresses EVM
- List Synced Addresses XRP
- List HD Wallet (xPub, yPub, zPub) Transactions UTXO
- List HD Wallet (xPub, yPub, zPub) Transactions EVM
- List HD Wallet (xPub, yPub, zPub) Transactions XRP
- List HD Wallet (xPub, yPub, zPub) UTXOs
- Prepare A UTXO-Based Transaction From HD Wallet (xPub, yPub, zPub)
- Prepare A Transaction From an Address in HD Wallet (xPub, yPub, zPub) EVM
- Get HD Wallet (xPub, yPub, zPub) Assets UTXO
- Get HD Wallet (xPub, yPub, zPub) Assets EVM
- Get HD Wallet (xPub, yPub, zPub) Assets XRP
- Get HD Wallet (xPub, yPub, zPub) Details UTXO
- Get HD Wallet (xPub, yPub, zPub) Details EVM
- Get HD Wallet (xPub, yPub, zPub) Details XRP
- List Synced HD Wallets (xPub, yPub, zPub)
- Activate HD Wallet (xPub, yPub, zPub)
- Delete Synced HD Wallet (xPub, yPub, zPub)
- address-latest Actions
- Utilities Actions
- simulate-transactions Actions
- addresses-latest Actions
- Get Address Balance Solana
- List Transactions By Address Solana
- Get Address Balance EVM
- Get Address Balance XRP
- Get Address Balance Kaspa
- List Confirmed Transactions By Address EVM
- List Transactions by Address XRP
- List Confirmed Transactions By Address UTXOs
- List Confirmed Transactions By Address Kaspa
- List Unconfirmed Transactions by Address UTXOs
- List Internal Transactions By Address EVM
- Get Next Available Nonce EVM
- List Confirmed Tokens Transfers By Address EVM
- addresses-historical Actions
- Get Address Balance UTXOs
- List Confirmed Transactions By Address EVM history
- List Confirmed Transactions By Address UTXO Historical
- List Unspent Transaction Outputs By Address UTXOs
- Sync Address
- List Synced Addresses
- Get Synced Address Tokens Transfer EVM
- Activate Synced Address
- Delete Synced Address
- List Synced Address Internal Transactions EVM
- List Tokens By Address Synced EVM
- blockchain-events Actions
- New Confirmed Coins Transactions
- New Unconfirmed Coins Transactions
- New Confirmed Tokens Transactions
- New Confirmed Coins Transactions And Each Confirmation
- New Confirmed Tokens Transactions And Each Confirmation
- Mined Transaction
- New Block
- List Blockchain Events Subscriptions
- Get Blockchain Event Subscription Details By Reference ID
- Delete Blockchain Event Subscription
- Activate Blockchain Event Subscription
- New Confirmed Internal Transactions
- New Confirmed Internal Transactions And Each Confirmation
- Crypto Transactions Actions
- Get Transaction Details By Transaction Hash Solana
- Get Transaction Details By Transaction Id Kaspa
- Get Transaction Details By Transaction Hash EVM
- Get Transaction Details By Transaction Hash UTXOs
- Get Transaction Details By Transaction Hash XRP
- List Internal Transaction Details by Transaction Hash EVM
- List Tokens Transfers By Transaction Hash EVM
- List Logs By Transaction Hash EVM
- Get Raw Transaction Data UTXOs
- contracts Actions
- blockchain-fees Actions
- broadcast-transactions Actions
- prepare-transactions Actions
- Market Data & Prices Actions
Overview
This node interacts with the Crypto APIs REST API to estimate the smart fee for a blockchain transaction based on UTXOs (Unspent Transaction Outputs). It is useful when you want to dynamically calculate the recommended transaction fee to ensure timely confirmation on a specified blockchain network. For example, if you are building a wallet or payment system that needs to set appropriate fees for Bitcoin or other UTXO-based blockchains, this node helps by providing fee estimates according to current network conditions and user preferences.
Properties
| Name | Meaning |
|---|---|
| blockchain | The blockchain network to query (e.g., Bitcoin, Litecoin). |
| network | The specific network environment (e.g., mainnet, testnet) of the selected blockchain. |
| context | Optional context string to correlate or identify the request. |
| confirmationTarget | Optional number indicating the desired number of blocks within which the transaction should confirm. |
| estimateMode | Optional mode for fee estimation; can be either "economical" (lower fee, slower confirmation) or "conservative" (higher fee, faster confirmation). |
Output
The node outputs JSON data representing the estimated smart fee details returned from the Crypto APIs service. This typically includes fee rates and related metadata necessary to construct a transaction with an appropriate fee. The output is structured as an array of JSON objects, each corresponding to one input item processed.
No binary data output is produced by this node.
Dependencies
- Requires an active connection to the Crypto APIs REST API.
- Requires an API key credential configured in n8n to authenticate requests.
- Uses a local OpenAPI specification file (
2024-12-12-final.json) bundled with the node to map operations and parameters. - Relies on internal helper functions to perform HTTP requests to the Crypto APIs endpoints.
Troubleshooting
- Operation not found error: If the node throws an error stating the operation was not found, verify that the selected Resource and Operation are valid and supported by the installed version of the node.
- Missing required parameters: Ensure all required properties such as
blockchainandnetworkare provided; missing these will cause request failures. - API authentication errors: Confirm that the API key credential is correctly configured and has sufficient permissions.
- Network or connectivity issues: Check internet connectivity and Crypto APIs service status if requests time out or fail.
- Invalid parameter values: Providing unsupported values for
estimateModeor invalid numbers forconfirmationTargetmay result in API errors.