@fireblocks/fireblocks-web3-provider

Fireblocks Web3 Provider Documentation

Fireblocks Web3 Provider

Fireblocks EIP-1193 Compatible Ethereum JavaScript Provider

Installation

npm install @fireblocks/fireblocks-web3-provider

Setup

import { FireblocksWeb3Provider, ChainId, ApiBaseUrl } from "@fireblocks/fireblocks-web3-provider";

const eip1193Provider = new FireblocksWeb3Provider({
    // apiBaseUrl: ApiBaseUrl.Sandbox // If using a sandbox workspace
    privateKey: process.env.FIREBLOCKS_API_PRIVATE_KEY_PATH,
    apiKey: process.env.FIREBLOCKS_API_KEY,
    vaultAccountIds: process.env.FIREBLOCKS_VAULT_ACCOUNT_IDS,
    chainId: ChainId.GOERLI,

    logTransactionStatusChanges: true, // Verbose logging
})

Usage with ethers.js

npm install ethers

import * as ethers from "ethers"

const provider = new ethers.BrowserProvider(eip1193Provider); 

// Or like this if you're using ethers v5:
// const provider = new ethers.providers.Web3Provider(eip1193Provider); 

Usage with web3.js

npm install web3

import Web3 from "web3";

const web3 = new Web3(eip1193Provider);

API Documentation

new FireblocksWeb3Provider(config)

• config FireblocksProviderConfig

This class is an EIP-1193 Compatible Ethereum JavaScript Provider powered by the Fireblocks API

FireblocksProviderConfig

type FireblocksProviderConfig = {
  // ------------- Mandatory fields -------------
  /** 
   * Learn more about creating API users here: 
   * https://developers.fireblocks.com/docs/quickstart#api-user-creation
   */

  /** 
   * Fireblocks API key
   */
  apiKey: string,

  /** 
   * Fireblocks API private key for signing requests
   */
  privateKey: string,

  // Either chainId or rpcUrl must be provided
  /** 
   * If not provided, it is inferred from the rpcUrl 
   */
  chainId?: ChainId,
  /** 
   * If not provided, it is inferred from the chainId 
   */
  rpcUrl?: string,

  // ------------- Optional fields --------------

  /** 
   * By default, the first 20 vault accounts are dynamically loaded from the Fireblocks API
   * It is recommended to provide the vault account ids explicitly because it helps avoid unnecessary API calls
   */
  vaultAccountIds?: number | number[] | string | string[],
  /** 
   * By default, it uses the Fireblocks API production endpoint
   * When using a sandbox workspace, you should provide the ApiBaseUrl.Sandbox value
   */
  apiBaseUrl?: ApiBaseUrl | string,
  /**
   * By default, the fallback fee level is set to FeeLevel.MEDIUM
   */
  fallbackFeeLevel?: FeeLevel,
  /**
   * By default, the note is set to "Created by Fireblocks Web3 Provider"
   */
  note?: string,
  /**
   * By default, the polling interval is set to 1000ms (1 second)
   * It is the interval in which the Fireblocks API is queried to check the status of transactions
   */
  pollingInterval?: number,
  /**
   * By default, it is assumed that one time addresses are enabled in your workspace
   * If they're not, set this to false
   */
  oneTimeAddressesEnabled?: boolean,
  /**
   * By default, no externalTxId is associated with transactions
   * If you want to set one, you can either provide a function that returns a string, or provide a string directly
   */
  externalTxId?: (() => string) | string,
  /**
   * If you want to prepend an additional product string to the User-Agent header, you can provide it here
   */
  userAgent?: string,
  /**
   * If you are using a private/custom EVM chain, you can provide its Fireblocks assetId here
   */
  assetId?: string,
  /**
   * Default: false
   * By setting to true, every transaction status change will be logged to the console
   * Same as setting env var `DEBUG=fireblocks-web3-provider:status`
   */
  logTransactionStatusChanges?: boolean,
  /**
   * Default: false
   * By setting to true, every request and response processed by the provider will be logged to the console
   * Same as setting env var `DEBUG=fireblocks-web3-provider:req_res`
   */
  logRequestsAndResponses?: boolean,
  /**
   * Default: true
   * By setting to true, every failed transaction will print additional information
   * helpful for debugging, such as a link to simulate the transaction on Tenderly
   * Same as setting env var `DEBUG=fireblocks-web3-provider:error`
   */
  enhancedErrorHandling?: boolean,
  /**
   * Proxy path in the format of `http(s)://user:pass@server`
   */
  proxyPath?: string
}

Changelog

v1.3.18

9 September 2025

• release 1.3.17 b50f71e
• feat: :sparkles: added several new chains 6bb7e36