diff --git a/lib/signer.d.ts b/lib/signer.d.ts
index 9322c3a10e..d9f4ae8de8 100644
--- a/lib/signer.d.ts
+++ b/lib/signer.d.ts
@@ -1,4 +1,4 @@
-import { Signature, PublicKey } from './utils/key_pair';
+import { Signature, KeyPair, PublicKey } from './utils/key_pair';
 import { KeyStore } from './key_stores';
 /**
  * General signing interface, can be used for in memory signing, RPC singing, external wallet, HSM, etc.
@@ -28,6 +28,14 @@ export declare abstract class Signer {
 export declare class InMemorySigner extends Signer {
     readonly keyStore: KeyStore;
     constructor(keyStore: KeyStore);
+    /**
+     * Creates a tempSigner (intended to be one time use) with account, network and keyPair provided
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account to assign a public key to
+     * @param keyPair The keyPair to use for signing
+     * @returns {Promise<PublicKey>}
+     */
+    static fromKeyPair(networkId: string, accountId: string, keyPair: KeyPair): Promise<Signer>;
     /**
      * Creates a public key for the account given
      * @param accountId The NEAR account to assign a public key to
diff --git a/lib/signer.js b/lib/signer.js
index 50c8dde10b..778fca68a6 100644
--- a/lib/signer.js
+++ b/lib/signer.js
@@ -6,6 +6,7 @@ Object.defineProperty(exports, "__esModule", { value: true });
 exports.InMemorySigner = exports.Signer = void 0;
 const js_sha256_1 = __importDefault(require("js-sha256"));
 const key_pair_1 = require("./utils/key_pair");
+const key_stores_1 = require("./key_stores");
 /**
  * General signing interface, can be used for in memory signing, RPC singing, external wallet, HSM, etc.
  */
@@ -20,6 +21,18 @@ class InMemorySigner extends Signer {
         super();
         this.keyStore = keyStore;
     }
+    /**
+     * Creates a tempSigner (intended to be one time use) with account, network and keyPair provided
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account to assign a public key to
+     * @param keyPair The keyPair to use for signing
+     * @returns {Promise<PublicKey>}
+     */
+    static async fromKeyPair(networkId, accountId, keyPair) {
+        const keyStore = new key_stores_1.InMemoryKeyStore();
+        await keyStore.setKey(networkId, accountId, keyPair);
+        return new InMemorySigner(keyStore);
+    }
     /**
      * Creates a public key for the account given
      * @param accountId The NEAR account to assign a public key to
diff --git a/src/signer.ts b/src/signer.ts
index 1c9d481596..4f0b51ed19 100644
--- a/src/signer.ts
+++ b/src/signer.ts
@@ -1,6 +1,6 @@
 import sha256 from 'js-sha256';
 import { Signature, KeyPair, PublicKey } from './utils/key_pair';
-import { KeyStore } from './key_stores';
+import { KeyStore, InMemoryKeyStore } from './key_stores';
 
 /**
  * General signing interface, can be used for in memory signing, RPC singing, external wallet, HSM, etc.
@@ -38,6 +38,19 @@ export class InMemorySigner extends Signer {
         super();
         this.keyStore = keyStore;
     }
+    
+    /**
+     * Creates a tempSigner (intended to be one time use) with account, network and keyPair provided
+     * @param networkId The targeted network. (ex. default, betanet, etc…)
+     * @param accountId The NEAR account to assign a public key to
+     * @param keyPair The keyPair to use for signing
+     * @returns {Promise<PublicKey>}
+     */
+    static async fromKeyPair(networkId: string, accountId: string, keyPair: KeyPair): Promise<Signer> {
+        const keyStore = new InMemoryKeyStore()
+        await keyStore.setKey(networkId, accountId, keyPair);
+        return new InMemorySigner(keyStore);
+    }
 
     /**
      * Creates a public key for the account given
diff --git a/test/account_multisig.test.js b/test/account_multisig.test.js
index 24ef08d188..464a366a85 100644
--- a/test/account_multisig.test.js
+++ b/test/account_multisig.test.js
@@ -12,7 +12,6 @@ const {
     KeyPair,
     transactions: { functionCall },
     InMemorySigner,
-    keyStores: { InMemoryKeyStore },
     multisig: { Account2FA, MULTISIG_GAS, MULTISIG_DEPOSIT },
     utils: { format: { parseNearAmount } }
 } = nearApi;
@@ -33,9 +32,7 @@ const getAccount2FA = async (account, keyMapping = ({ public_key: publicKey }) =
             const { requestId } = account2fa.getRequest();
             // set confirmKey as signer
             const originalSigner = nearjs.connection.signer;
-            const tempKeyStore = new InMemoryKeyStore();
-            await tempKeyStore.setKey(nearjs.connection.networkId, accountId, account2fa.confirmKey);
-            nearjs.connection.signer = new InMemorySigner(tempKeyStore);
+            nearjs.connection.signer = await InMemorySigner.fromKeyPair(nearjs.connection.networkId, accountId, account2fa.confirmKey);
             // 2nd confirmation signing with confirmKey from Account instance
             await account.signAndSendTransaction(accountId, [
                 functionCall('confirm', { request_id: requestId }, MULTISIG_GAS, MULTISIG_DEPOSIT)