diff --git a/src/index.js b/src/index.js
index bbf84c8a1..37c06d96e 100644
--- a/src/index.js
+++ b/src/index.js
@@ -11,6 +11,7 @@ module.exports = {
   // Utilities
   Collection: require('./util/Collection'),
   Constants: require('./util/Constants'),
+  DiscordAPIError: require('./client/rest/DiscordAPIError'),
   EvaluatedPermissions: require('./util/Permissions'),
   Permissions: require('./util/Permissions'),
   Snowflake: require('./util/Snowflake'),
diff --git a/src/util/Constants.js b/src/util/Constants.js
index 61ca12d37..562445376 100644
--- a/src/util/Constants.js
+++ b/src/util/Constants.js
@@ -594,3 +594,96 @@ exports.Colors = {
   DARK_BUT_NOT_BLACK: 0x2C2F33,
   NOT_QUITE_BLACK: 0x23272A,
 };
+
+/**
+ * An error encountered while performing an API request. Here are the potential errors:
+ * - UNKNOWN_ACCOUNT
+ * - UNKNOWN_APPLICATION
+ * - UNKNOWN_CHANNEL
+ * - UNKNOWN_GUILD
+ * - UNKNOWN_INTEGRATION
+ * - UNKNOWN_INVITE
+ * - UNKNOWN_MEMBER
+ * - UNKNOWN_MESSAGE
+ * - UNKNOWN_OVERWRITE
+ * - UNKNOWN_PROVIDER
+ * - UNKNOWN_ROLE
+ * - UNKNOWN_TOKEN
+ * - UNKNOWN_USER
+ * - UNKNOWN_EMOJI
+ * - BOT_PROHIBITED_ENDPOINT
+ * - BOT_ONLY_ENDPOINT
+ * - MAXIMUM_GUILDS
+ * - MAXIMUM_FRIENDS
+ * - MAXIMUM_PINS
+ * - MAXIMUM_ROLES
+ * - MAXIMUM_REACTIONS
+ * - UNAUTHORIZED
+ * - MISSING_ACCESS
+ * - INVALID_ACCOUNT_TYPE
+ * - CANNOT_EXECUTE_ON_DM
+ * - EMBED_DISABLED
+ * - CANNOT_EDIT_MESSAGE_BY_OTHER
+ * - CANNOT_SEND_EMPTY_MESSAGE
+ * - CANNOT_MESSAGE_USER
+ * - CANNOT_SEND_MESSAGES_IN_VOICE_CHANNEL
+ * - CHANNEL_VERIFICATION_LEVEL_TOO_HIGH
+ * - OAUTH2_APPLICATION_BOT_ABSENT
+ * - MAXIMUM_OAUTH2_APPLICATIONS
+ * - INVALID_OAUTH_STATE
+ * - MISSING_PERMISSIONS
+ * - INVALID_AUTHENTICATION_TOKEN
+ * - NOTE_TOO_LONG
+ * - INVALID_BULK_DELETE_QUANTITY
+ * - CANNOT_PIN_MESSAGE_IN_OTHER_CHANNEL
+ * - CANNOT_EXECUTE_ON_SYSTEM_MESSAGE
+ * - BULK_DELETE_MESSAGE_TOO_OLD
+ * - INVITE_ACCEPTED_TO_GUILD_NOT_CONTANING_BOT
+ * - REACTION_BLOCKED
+ * @typedef {string} APIError
+ */
+exports.APIErrors = {
+  UNKNOWN_ACCOUNT: 10001,
+  UNKNOWN_APPLICATION: 10002,
+  UNKNOWN_CHANNEL: 10003,
+  UNKNOWN_GUILD: 10004,
+  UNKNOWN_INTEGRATION: 10005,
+  UNKNOWN_INVITE: 10006,
+  UNKNOWN_MEMBER: 10007,
+  UNKNOWN_MESSAGE: 10008,
+  UNKNOWN_OVERWRITE: 10009,
+  UNKNOWN_PROVIDER: 10010,
+  UNKNOWN_ROLE: 10011,
+  UNKNOWN_TOKEN: 10012,
+  UNKNOWN_USER: 10013,
+  UNKNOWN_EMOJI: 10014,
+  BOT_PROHIBITED_ENDPOINT: 20001,
+  BOT_ONLY_ENDPOINT: 20002,
+  MAXIMUM_GUILDS: 30001,
+  MAXIMUM_FRIENDS: 30002,
+  MAXIMUM_PINS: 30003,
+  MAXIMUM_ROLES: 30005,
+  MAXIMUM_REACTIONS: 30010,
+  UNAUTHORIZED: 40001,
+  MISSING_ACCESS: 50001,
+  INVALID_ACCOUNT_TYPE: 50002,
+  CANNOT_EXECUTE_ON_DM: 50003,
+  EMBED_DISABLED: 50004,
+  CANNOT_EDIT_MESSAGE_BY_OTHER: 50005,
+  CANNOT_SEND_EMPTY_MESSAGE: 50006,
+  CANNOT_MESSAGE_USER: 50007,
+  CANNOT_SEND_MESSAGES_IN_VOICE_CHANNEL: 50008,
+  CHANNEL_VERIFICATION_LEVEL_TOO_HIGH: 50009,
+  OAUTH2_APPLICATION_BOT_ABSENT: 50010,
+  MAXIMUM_OAUTH2_APPLICATIONS: 50011,
+  INVALID_OAUTH_STATE: 50012,
+  MISSING_PERMISSIONS: 50013,
+  INVALID_AUTHENTICATION_TOKEN: 50014,
+  NOTE_TOO_LONG: 50015,
+  INVALID_BULK_DELETE_QUANTITY: 50016,
+  CANNOT_PIN_MESSAGE_IN_OTHER_CHANNEL: 50019,
+  CANNOT_EXECUTE_ON_SYSTEM_MESSAGE: 50021,
+  BULK_DELETE_MESSAGE_TOO_OLD: 50034,
+  INVITE_ACCEPTED_TO_GUILD_NOT_CONTANING_BOT: 50036,
+  REACTION_BLOCKED: 90001,
+};