diff --git a/packages/api-kit/src/types/safeTransactionServiceTypes.ts b/packages/api-kit/src/types/safeTransactionServiceTypes.ts
index 80fcb80ab..348d19b4e 100644
--- a/packages/api-kit/src/types/safeTransactionServiceTypes.ts
+++ b/packages/api-kit/src/types/safeTransactionServiceTypes.ts
@@ -1,9 +1,9 @@
 import { Signer, TypedDataDomain, TypedDataField } from 'ethers'
 import {
   SafeMultisigTransactionResponse,
+  SafeOperation,
   SafeTransactionData
 } from '@safe-global/safe-core-sdk-types'
-import SafeOperation from '@safe-global/relay-kit/src/packs/safe-4337/SafeOperation'
 
 export type SafeServiceInfoResponse = {
   readonly name: string
diff --git a/packages/api-kit/tests/endpoint/index.test.ts b/packages/api-kit/tests/endpoint/index.test.ts
index 5ac189233..39eaa99d3 100644
--- a/packages/api-kit/tests/endpoint/index.test.ts
+++ b/packages/api-kit/tests/endpoint/index.test.ts
@@ -7,14 +7,13 @@ import SafeApiKit, {
 } from '@safe-global/api-kit/index'
 import * as httpRequests from '@safe-global/api-kit/utils/httpRequests'
 import Safe from '@safe-global/protocol-kit'
-import { EthAdapter } from '@safe-global/safe-core-sdk-types'
+import { EthAdapter, SafeOperation } from '@safe-global/safe-core-sdk-types'
 import chai from 'chai'
 import chaiAsPromised from 'chai-as-promised'
 import sinon from 'sinon'
 import sinonChai from 'sinon-chai'
 import config from '../utils/config'
 import { getServiceClient } from '../utils/setupServiceClient'
-import SafeOperation from '@safe-global/relay-kit/packs/safe-4337/SafeOperation'
 
 chai.use(chaiAsPromised)
 chai.use(sinonChai)
diff --git a/packages/relay-kit/src/packs/safe-4337/Safe4337Pack.ts b/packages/relay-kit/src/packs/safe-4337/Safe4337Pack.ts
index d5b5d10b6..65d20f6a3 100644
--- a/packages/relay-kit/src/packs/safe-4337/Safe4337Pack.ts
+++ b/packages/relay-kit/src/packs/safe-4337/Safe4337Pack.ts
@@ -8,12 +8,17 @@ import Safe, {
   getMultiSendContract
 } from '@safe-global/protocol-kit'
 import { RelayKitBasePack } from '@safe-global/relay-kit/RelayKitBasePack'
-import { MetaTransactionData, OperationType, SafeSignature } from '@safe-global/safe-core-sdk-types'
+import {
+  MetaTransactionData,
+  OperationType,
+  SafeSignature,
+  UserOperation,
+  SafeUserOperation
+} from '@safe-global/safe-core-sdk-types'
 import {
   getAddModulesLibDeployment,
   getSafe4337ModuleDeployment
 } from '@safe-global/safe-modules-deployments'
-
 import SafeOperation from './SafeOperation'
 import {
   EstimateFeeProps,
@@ -21,8 +26,6 @@ import {
   Safe4337ExecutableProps,
   Safe4337InitOptions,
   Safe4337Options,
-  SafeUserOperation,
-  UserOperation,
   UserOperationReceipt,
   UserOperationWithPayload,
   PaymasterOptions
diff --git a/packages/relay-kit/src/packs/safe-4337/SafeOperation.ts b/packages/relay-kit/src/packs/safe-4337/SafeOperation.ts
index e27e6d974..b7dc1a9b0 100644
--- a/packages/relay-kit/src/packs/safe-4337/SafeOperation.ts
+++ b/packages/relay-kit/src/packs/safe-4337/SafeOperation.ts
@@ -1,12 +1,16 @@
 import { ethers } from 'ethers'
-import { SafeSignature } from '@safe-global/safe-core-sdk-types'
+import {
+  EstimateGasData,
+  SafeOperation as SafeOperationType,
+  SafeSignature,
+  SafeUserOperation,
+  UserOperation
+} from '@safe-global/safe-core-sdk-types'
 import { buildSignatureBytes } from '@safe-global/protocol-kit'
 
-import { EstimateGasData, SafeUserOperation, UserOperation } from './types'
-
 type SafeOperationOptions = { entryPoint: string; validAfter?: number; validUntil?: number }
 
-class SafeOperation {
+class SafeOperation implements SafeOperationType {
   data: SafeUserOperation
   signatures: Map<string, SafeSignature> = new Map()
 
diff --git a/packages/relay-kit/src/packs/safe-4337/estimators/PimlicoFeeEstimator.ts b/packages/relay-kit/src/packs/safe-4337/estimators/PimlicoFeeEstimator.ts
index a61eca986..f00932f43 100644
--- a/packages/relay-kit/src/packs/safe-4337/estimators/PimlicoFeeEstimator.ts
+++ b/packages/relay-kit/src/packs/safe-4337/estimators/PimlicoFeeEstimator.ts
@@ -1,7 +1,7 @@
 import { ethers } from 'ethers'
+import { EstimateGasData } from '@safe-global/safe-core-sdk-types'
 import {
   EstimateFeeFunctionProps,
-  EstimateGasData,
   EstimateSponsoredFeeFunctionProps,
   EstimateSponsoredGasData,
   IFeeEstimator
diff --git a/packages/relay-kit/src/packs/safe-4337/types.ts b/packages/relay-kit/src/packs/safe-4337/types.ts
index ddb701b37..c338a11fc 100644
--- a/packages/relay-kit/src/packs/safe-4337/types.ts
+++ b/packages/relay-kit/src/packs/safe-4337/types.ts
@@ -1,5 +1,10 @@
 import Safe, { EthersAdapter } from '@safe-global/protocol-kit'
-import { MetaTransactionData, SafeVersion } from '@safe-global/safe-core-sdk-types'
+import {
+  EstimateGasData,
+  MetaTransactionData,
+  SafeVersion,
+  UserOperation
+} from '@safe-global/safe-core-sdk-types'
 import { ethers } from 'ethers'
 import SafeOperation from './SafeOperation'
 
@@ -61,44 +66,6 @@ export type Safe4337ExecutableProps = {
   executable: SafeOperation
 }
 
-export type SafeUserOperation = {
-  safe: string
-  nonce: bigint
-  initCode: string
-  callData: string
-  callGasLimit: bigint
-  verificationGasLimit: bigint
-  preVerificationGas: bigint
-  maxFeePerGas: bigint
-  maxPriorityFeePerGas: bigint
-  paymasterAndData: string
-  validAfter: number
-  validUntil: number
-  entryPoint: string
-}
-
-export type UserOperation = {
-  sender: string
-  nonce: string
-  initCode: string
-  callData: string
-  callGasLimit: bigint
-  verificationGasLimit: bigint
-  preVerificationGas: bigint
-  maxFeePerGas: bigint
-  maxPriorityFeePerGas: bigint
-  paymasterAndData: string
-  signature: string
-}
-
-export type EstimateGasData = {
-  maxFeePerGas?: bigint
-  maxPriorityFeePerGas?: bigint
-  preVerificationGas?: bigint
-  verificationGasLimit?: bigint
-  callGasLimit?: bigint
-}
-
 export type EstimateSponsoredGasData = {
   paymasterAndData: string
 } & EstimateGasData
diff --git a/packages/relay-kit/src/packs/safe-4337/utils.ts b/packages/relay-kit/src/packs/safe-4337/utils.ts
index c3d132872..1e2db76c2 100644
--- a/packages/relay-kit/src/packs/safe-4337/utils.ts
+++ b/packages/relay-kit/src/packs/safe-4337/utils.ts
@@ -1,5 +1,5 @@
 import { ethers } from 'ethers'
-import { UserOperation } from './types'
+import { UserOperation } from '@safe-global/safe-core-sdk-types'
 
 /**
  * Gets the EIP-4337 bundler provider.
diff --git a/packages/safe-core-sdk-types/src/types.ts b/packages/safe-core-sdk-types/src/types.ts
index 30eb4e7e8..4430d18ce 100644
--- a/packages/safe-core-sdk-types/src/types.ts
+++ b/packages/safe-core-sdk-types/src/types.ts
@@ -252,3 +252,51 @@ export interface MetaTransactionOptions {
   gasToken?: string
   isSponsored?: boolean
 }
+
+export type UserOperation = {
+  sender: string
+  nonce: string
+  initCode: string
+  callData: string
+  callGasLimit: bigint
+  verificationGasLimit: bigint
+  preVerificationGas: bigint
+  maxFeePerGas: bigint
+  maxPriorityFeePerGas: bigint
+  paymasterAndData: string
+  signature: string
+}
+
+export type SafeUserOperation = {
+  safe: string
+  nonce: bigint
+  initCode: string
+  callData: string
+  callGasLimit: bigint
+  verificationGasLimit: bigint
+  preVerificationGas: bigint
+  maxFeePerGas: bigint
+  maxPriorityFeePerGas: bigint
+  paymasterAndData: string
+  validAfter: number
+  validUntil: number
+  entryPoint: string
+}
+
+export type EstimateGasData = {
+  maxFeePerGas?: bigint
+  maxPriorityFeePerGas?: bigint
+  preVerificationGas?: bigint
+  verificationGasLimit?: bigint
+  callGasLimit?: bigint
+}
+
+export interface SafeOperation {
+  readonly data: SafeUserOperation
+  readonly signatures: Map<string, SafeSignature>
+  getSignature(signer: string): SafeSignature | undefined
+  addSignature(signature: SafeSignature): void
+  encodedSignatures(): string
+  addEstimations(estimations: EstimateGasData): void
+  toUserOperation(): UserOperation
+}