diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..07229bb
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,122 @@
+import { BigNumberish, providers, Wallet } from 'ethers'
+import { EventEmitter } from 'eventemitter3'
+import { TransactionReceipt } from '@ethersproject/abstract-provider'
+import PromiEvent from 'web3-core-promievent'
+import { GasPriceOracle } from 'gas-price-oracle'
+import { Mutex } from 'async-mutex'
+import { Options as GasOracleOptions } from 'gas-price-oracle/lib/types'
+
+export interface TransactionData {
+  to?: string
+  from?: string
+  nonce?: number
+  gasLimit?: BigNumberish
+  gasPrice?: BigNumberish
+  data?: string
+  value?: BigNumberish
+  chainId?: number
+  type?: number
+  maxFeePerGas?: BigNumberish
+  maxPriorityFeePerGas?: BigNumberish
+}
+
+export interface TxManagerConfig {
+  MAX_RETRIES?: number
+  GAS_BUMP_PERCENTAGE?: number
+  MIN_GWEI_BUMP?: number
+  GAS_BUMP_INTERVAL?: number
+  MAX_GAS_PRICE?: number
+  GAS_LIMIT_MULTIPLIER?: number
+  POLL_INTERVAL?: number
+  CONFIRMATIONS?: number
+  ESTIMATE_GAS?: boolean
+  THROW_ON_REVERT?: boolean
+  BLOCK_GAS_LIMIT?: number
+  PRIORITY_FEE_GWEI?: number
+  BASE_FEE_RESERVE_PERCENTAGE?: number
+}
+
+export interface TxManagerParams {
+  privateKey: string
+  rpcUrl: string
+  broadcastNodes?: string[]
+  config?: TxManagerConfig
+  gasPriceOracleConfig?: GasOracleOptions
+}
+
+export class TxManager {
+  config: TxManagerConfig
+  address: string
+  private _privateKey: string
+  private _provider: providers.JsonRpcProvider
+  private _wallet: Wallet
+  private _broadcastNodes: string[]
+  private _gasPriceOracle: GasPriceOracle
+  private _mutex: Mutex
+  private _nonce: number
+
+  constructor(params?: TxManagerParams)
+
+  createTx(tx: TransactionData): Transaction
+}
+
+export type GasParams = {
+  maxFeePerGas?: string
+  maxPriorityFeePerGas?: string
+  gasPrice?: string
+  type: number
+}
+export type TxManagerEvents = keyof MessageEvents
+
+export type MessageEvents = {
+  error: (error: Error) => void
+  transactionHash: (transactionHash: string) => void
+  mined: (receipt: TransactionReceipt) => void
+  confirmations: (confirmations: number) => void
+}
+type TEventEmitter = typeof EventEmitter
+
+declare interface TxManagerEventEmmiter extends TEventEmitter {
+  on<U extends TxManagerEvents>(event: U, listener: MessageEvents[U]): this
+  on(event: 'confirmations', listener: MessageEvents['confirmations']): Promise<TransactionReceipt>
+  emit<U extends TxManagerEvents>(event: U, ...args: Parameters<MessageEvents[U]>): boolean
+}
+
+export class Transaction {
+  manager: TxManager
+  tx: TransactionData
+  private _promise: typeof PromiEvent
+  private _emitter: TxManagerEventEmmiter
+  executed: boolean
+  retries: number
+  currentTxHash: string
+  hashes: string[]
+
+  constructor(tx: TransactionData, manager: TxManager)
+
+  send(): TxManagerEventEmmiter
+
+  replace(tx: TransactionData): Promise<void>
+
+  cancel(): this
+
+  private _prepare(): Promise<void>
+
+  private _send(): Promise<void>
+
+  private _execute(): Promise<TransactionReceipt>
+
+  private _waitForConfirmations(): Promise<TransactionReceipt>
+
+  private _getReceipts(): Promise<TransactionReceipt>
+
+  private _increaseGasPrice(): boolean
+
+  private _hasError(message, errors: (string | RegExp)[]): boolean
+
+  private _getGasPrice(type: 'instant' | 'fast' | 'normal' | 'slow'): Promise<string>
+
+  private _getLastNonce(): Promise<number>
+
+  private _getGasParams(): Promise<GasParams>
+}
diff --git a/package.json b/package.json
index 8491f51..4f92c17 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "0.4.6",
   "description": "",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "eslint": "eslint --ext .js --ignore-path .gitignore .",
     "prettier:check": "prettier --check . --config .prettierrc",