diff --git a/index.ts b/index.ts
index 7387513..363be43 100644
--- a/index.ts
+++ b/index.ts
@@ -7,9 +7,6 @@
  * file that was distributed with this source code.
  */
 
+export * as errors from './src/errors.js'
 export { HttpClient } from './src/http_client.js'
 export { UrlBuilder } from './src/url_builder.js'
-export { Oauth1Client } from './src/clients/oauth1/main.js'
-export { Oauth2Client } from './src/clients/oauth2/main.js'
-export { MissingTokenException } from './src/exceptions/missing_token.js'
-export { StateMisMatchException } from './src/exceptions/state_mismatch.js'
diff --git a/package.json b/package.json
index 795bacf..746bf59 100644
--- a/package.json
+++ b/package.json
@@ -11,6 +11,8 @@
   ],
   "exports": {
     ".": "./build/index.js",
+    "./oauth1": "./build/src/clients/oauth1/main.js",
+    "./oauth2": "./build/src/clients/oauth2/main.js",
     "./types": "./build/src/types.js"
   },
   "engines": {
diff --git a/src/clients/oauth1/main.ts b/src/clients/oauth1/main.ts
index b56ba3c..1f6c821 100644
--- a/src/clients/oauth1/main.ts
+++ b/src/clients/oauth1/main.ts
@@ -22,8 +22,7 @@ import debug from '../../debug.js'
 import { Oauth1Signature } from './signature.js'
 import { HttpClient } from '../../http_client.js'
 import { UrlBuilder } from '../../url_builder.js'
-import { MissingTokenException } from '../../exceptions/missing_token.js'
-import { StateMisMatchException } from '../../exceptions/state_mismatch.js'
+import { E_OAUTH_MISSING_TOKEN, E_OAUTH_STATE_MISMATCH } from '../../errors.js'
 
 /**
  * Generic implementation of Oauth1 three leged authorization flow.
@@ -181,7 +180,7 @@ export class Oauth1Client<Token extends Oauth1AccessToken> {
    */
   verifyState(state: string, inputValue?: string) {
     if (!state || state !== inputValue) {
-      throw new StateMisMatchException()
+      throw new E_OAUTH_STATE_MISMATCH()
     }
   }
 
@@ -226,7 +225,7 @@ export class Oauth1Client<Token extends Oauth1AccessToken> {
      * We expect the response to have "oauth_token" and "oauth_token_secret"
      */
     if (!oauthToken || !oauthTokenSecret) {
-      throw new MissingTokenException(MissingTokenException.oauth1Message, { cause: parsed })
+      throw new E_OAUTH_MISSING_TOKEN(E_OAUTH_MISSING_TOKEN.oauth1Message, { cause: parsed })
     }
 
     return {
@@ -343,7 +342,7 @@ export class Oauth1Client<Token extends Oauth1AccessToken> {
      * We expect the response to have "oauth_token" and "oauth_token_secret"
      */
     if (!accessOauthToken || !accessOauthTokenSecret) {
-      throw new MissingTokenException(MissingTokenException.oauth1Message, { cause: parsed })
+      throw new E_OAUTH_MISSING_TOKEN(E_OAUTH_MISSING_TOKEN.oauth1Message, { cause: parsed })
     }
 
     return {
diff --git a/src/clients/oauth2/main.ts b/src/clients/oauth2/main.ts
index d39720b..9dfab8b 100644
--- a/src/clients/oauth2/main.ts
+++ b/src/clients/oauth2/main.ts
@@ -21,8 +21,7 @@ import {
 import debug from '../../debug.js'
 import { HttpClient } from '../../http_client.js'
 import { UrlBuilder } from '../../url_builder.js'
-import { MissingTokenException } from '../../exceptions/missing_token.js'
-import { StateMisMatchException } from '../../exceptions/state_mismatch.js'
+import { E_OAUTH_MISSING_TOKEN, E_OAUTH_STATE_MISMATCH } from '../../errors.js'
 
 /**
  * Generic implementation of OAuth2.
@@ -140,7 +139,7 @@ export class Oauth2Client<Token extends Oauth2AccessToken> {
    */
   verifyState(state: string, inputValue?: string) {
     if (!state || state !== inputValue) {
-      throw new StateMisMatchException()
+      throw new E_OAUTH_STATE_MISMATCH()
     }
   }
 
@@ -216,7 +215,7 @@ export class Oauth2Client<Token extends Oauth2AccessToken> {
      * We expect the response to have "access_token"
      */
     if (!accessToken) {
-      throw new MissingTokenException(MissingTokenException.oauth2Message, { cause: parsed })
+      throw new E_OAUTH_MISSING_TOKEN(E_OAUTH_MISSING_TOKEN.oauth2Message, { cause: parsed })
     }
 
     return {
diff --git a/src/exceptions/missing_token.ts b/src/errors.ts
similarity index 60%
rename from src/exceptions/missing_token.ts
rename to src/errors.ts
index 9359e72..e0e5900 100644
--- a/src/exceptions/missing_token.ts
+++ b/src/errors.ts
@@ -7,15 +7,24 @@
  * file that was distributed with this source code.
  */
 
-import { Exception } from '@poppinss/utils'
+import { createError, Exception } from '@poppinss/utils'
 
 /**
  * Raised when unable to get access token for oauth2 or oauth token and secret
  * for oauth1
  */
-export class MissingTokenException extends Exception {
+export const E_OAUTH_MISSING_TOKEN = class MissingTokenException extends Exception {
   static status = 400
   static code = 'E_OAUTH_MISSING_TOKEN'
   static oauth2Message = 'Invalid oauth2 response. Missing "access_token"'
   static oauth1Message = 'Invalid oauth1 response. Missing "oauth_token" and "oauth_token_secret"'
 }
+
+/**
+ * Raised when unable to verify the CSRF state post redirect
+ */
+export const E_OAUTH_STATE_MISMATCH = createError(
+  'Unable to verify re-redirect state',
+  'E_OAUTH_STATE_MISMATCH',
+  400
+)
diff --git a/src/exceptions/state_mismatch.ts b/src/exceptions/state_mismatch.ts
deleted file mode 100644
index a9d6b39..0000000
--- a/src/exceptions/state_mismatch.ts
+++ /dev/null
@@ -1,19 +0,0 @@
-/*
- * @poppinss/oauth-client
- *
- * (c) Poppinss
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-import { Exception } from '@poppinss/utils'
-
-/**
- * Raised when unable to verify the CSRF state post redirect
- */
-export class StateMisMatchException extends Exception {
-  static status = 400
-  static code = 'E_OAUTH_STATE_MISMATCH'
-  static message = 'Unable to verify re-redirect state'
-}
diff --git a/src/http_client.ts b/src/http_client.ts
index 5273c61..a028d17 100644
--- a/src/http_client.ts
+++ b/src/http_client.ts
@@ -9,8 +9,8 @@
 
 import got, { type CancelableRequest, type Response } from 'got'
 
-import type { ApiRequestContract } from './types.js'
 import debug from './debug.js'
+import type { ApiRequestContract } from './types.js'
 
 /**
  * An HTTP client abstraction we need for making OAuth requests