Added value: +{
+  "additionalProperties": false,
+  "description": "present on an outbound message an AI agent or an app sent through WhatsMCP: who asked for the send",
+  "properties": {
+    "id": {
+      "description": "the agent's, the API key's or the OAuth app's id",
+      "type": "string"
+    },
+    "kind": {
+      "description": "agent (a hosted AI agent), api_key (an app on one of your API keys) or oauth_app (an app you connected over OAuth, such as Claude)",
+      "type": "string"
+    },
+    "name": {
+      "description": "its name as it was when the message was sent",
+      "type": "string"
+    },
+    "version": {
+      "description": "an agent only: the number of the agent's version that wrote it",
+      "type": "integer"
+    },
+    "via": {
+      "description": "an app only: mcp or rest, the API it sent through",
+      "type": "string"
+    }
+  },
+  "required": [
+    "kind",
+    "id"
+  ],
+  "type": [
+    "null",
+    "object"
+  ]
+}

Previous value: -"why it is not live: starting, not_running, whatsapp_down, suspended, pairing, unlinked or locked"New value: +"why it is not live: starting, not_running, whatsapp_down (telegram_down for a Telegram account), suspended, pairing, unlinked or locked"

Previous value: -"when the number is not working: its status — starting, not_running, whatsapp_down, suspended, pairing, unlinked or locked"New value: +"when the number is not working: its status — starting, not_running, whatsapp_down (telegram_down for a Telegram account), suspended, pairing, unlinked or locked"

Previous value: -"dm, group, channel or broadcast"New value: +"dm, group, channel or broadcast; a Telegram supergroup reads as channel"

Previous value: -"what the message is: text, image, video, audio, document, sticker, reaction, location, live_location, contact, poll, poll_vote, video_note, album, event, comment, pin, group_invite, template or call_permission; other is a type this server does not classify. text carries a body, and so do image/video/document captions, template text and a call_permission request or answer; an image, video, audio, document or sticker attachment can be fetched with wa_get_media"New value: +"what the message is: text, image, video, audio, document, sticker, reaction, location, live_location, contact, poll, poll_vote, video_note, album, event, comment, pin, group_invite, template or call_permission; other is a type this server does not classify. text carries a body, and so do image/video/document captions, template text and a call_permission request or answer; an image, video, audio, document or sticker attachment can be fetched with wa_get_media; a reaction carries its emoji as text and names its target message in reacted_to_message_id, while a reply carries quoted_message_id for the message it quotes"

Added value: +{
+  "description": "present on a reply: the message_id of the message this one quotes; pass it to wa_get_message to read what was quoted",
+  "type": "string"
+}

Added value: +{
+  "description": "who wrote the quoted message: a phone number when known, otherwise a JID",
+  "type": "string"
+}

Added value: +{
+  "description": "present on a kind=reaction message: the message_id this reaction is about; the emoji itself is in text",
+  "type": "string"
+}

Previous value: -"the message body"New value: +"the message body; for a kind=reaction message this is the emoji"

Added value: +{
+  "description": "also return attachment.media_url on each available attachment — a time-limited (1h) signed URL to GET the bytes with plain HTTP instead of a wa_get_media call; off by default",
+  "type": "boolean"
+}

Previous value: -"present on an image, video, audio, document or sticker message: the file's mime type, size and name; fetch the bytes with wa_get_media"New value: +"present on an image, video, audio, document or sticker message: the file's mime type, size and name; fetch the bytes with wa_get_media, or pass include_media_urls on the read to get a direct media_url"

Added value: +{
+  "description": "a time-limited (1h) signed URL to GET the attachment's bytes, present only when the read passed include_media_urls and the attachment is available; an expired link is refused — read again for a fresh one",
+  "type": "string"
+}

Added value: +{
+  "description": "on an account_ambiguous refusal: the accounts to choose from — retry with one of these as account_id",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "account_id": {
+        "description": "the id to retry with as account_id",
+        "type": "string"
+      },
+      "name": {
+        "description": "the account's WhatsApp display name",
+        "type": "string"
+      },
+      "phone": {
+        "description": "the account's phone number, E.164",
+        "type": "string"
+      },
+      "status": {
+        "description": "whether the number works right now — live, connecting, or why not, as wa_list_accounts reports it",
+        "type": "string"
+      }
+    },
+    "required": [
+      "account_id"
+    ],
+    "type": "object"
+  },
+  "type": [
+    "null",
+    "array"
+  ]
+}

Previous value: -"only this conversation — a phone number or a group JID"New value: +"only this conversation — a phone number or a group JID, or on a Telegram account the chat's Telegram id (<id>@telegram)"

Previous value: -"the conversation JID; pass it to wa_send_message's 'to' to reply here — a group is …@g.us, a channel …@newsletter"New value: +"the conversation JID; pass it to wa_send_message's 'to' to reply here — a group is …@g.us, a channel …@newsletter; on a Telegram account a Telegram id: <id>@telegram for a user, -<id>@telegram for a basic group, -100<id>@telegram for a channel or supergroup"

Previous value: -"the other party's phone number (for a group/channel this is the individual SENDER; use chat to reply)"New value: +"the other party's phone number (for a group/channel this is the individual SENDER; use chat to reply); on a Telegram account the other party's Telegram id, <id>@telegram"

Added value: +{
+  "description": "present when the read found nothing new: wait before polling again",
+  "type": "string"
+}

Previous value: -"what the message is: text, image, video, audio, document, sticker, reaction, location, live_location, contact, poll, poll_vote, video_note, album, event, comment, pin, group_invite or template; other is a type this server does not classify. text carries a body, and so do image/video/document captions and template text; an image, video, audio, document or sticker attachment can be fetched with wa_get_media"New value: +"what the message is: text, image, video, audio, document, sticker, reaction, location, live_location, contact, poll, poll_vote, video_note, album, event, comment, pin, group_invite, template or call_permission; other is a type this server does not classify. text carries a body, and so do image/video/document captions, template text and a call_permission request or answer; an image, video, audio, document or sticker attachment can be fetched with wa_get_media"

Added value: +{
+  "description": "present when a number this read covers is not working: new messages are not arriving on it; says why and what to do",
+  "items": {
+    "additionalProperties": false,
+    "properties": {
+      "account_id": {
+        "description": "the account this notice is about",
+        "type": "string"
+      },
+      "message": {
+        "description": "what is wrong and what to do; tell the user",
+        "type": "string"
+      },
+      "since": {
+        "description": "when it stopped working, RFC3339, when known",
+        "type": "string"
+      },
+      "status": {
+        "description": "why it is not live: starting, not_running, whatsapp_down, suspended, pairing, unlinked or locked",
+        "type": "string"
+      },
+      "status_reason": {
+        "description": "the detail, e.g. no_egress, no_plan, stopped",
+        "type": "string"
+      }
+    },
+    "required": [
+      "account_id",
+      "status",
+      "message"
+    ],
+    "type": "object"
+  },
+  "type": [
+    "null",
+    "array"
+  ]
+}

Added value: +{
+  "description": "when the number is not working: its status — starting, not_running, whatsapp_down, suspended, pairing, unlinked or locked",
+  "type": "string"
+}

Added value: +{
+  "description": "the detail of account_status, e.g. no_egress, stopped, no_plan",
+  "type": "string"
+}

Added value: +{
+  "description": "when the number stopped working, RFC3339, when known",
+  "type": "string"
+}

Added value: +{
+  "description": "only this account's messages, from wa_list_accounts; omit for every account",
+  "type": "string"
+}

Added value: +{
+  "description": "only this conversation — a phone number or a group JID",
+  "type": "string"
+}

Added value: +{
+  "description": "also return imported history (pairing sync and wa_load_history); off by default. With it on, a page is in storage order rather than time order — sort by at",
+  "type": "boolean"
+}

Added value: +{
+  "description": "only messages sent at or after this time: RFC3339 with a zone (2026-10-01T09:00:00+03:00) or a date (2026-10-01 = midnight UTC); omit for no lower bound",
+  "type": "string"
+}

Added value: +{
+  "description": "only messages sent BEFORE this time — exclusive, so all of 1 October is since 2026-10-01 until 2026-10-02; same formats as since; omit for no upper bound",
+  "type": "string"
+}

Added value: +{
+  "additionalProperties": false,
+  "description": "present only when the request was declined; next_cursor is then your after_cursor, unchanged",
+  "properties": {
+    "message": {
+      "description": "a human-readable explanation",
+      "type": "string"
+    },
+    "reason": {
+      "description": "why the call was declined",
+      "type": "string"
+    },
+    "refused": {
+      "description": "true when the call was declined rather than performed",
+      "type": "boolean"
+    },
+    "retry_after_seconds": {
+      "description": "seconds to wait before retrying; absent or 0 means retrying will not help",
+      "type": "integer"
+    }
+  },
+  "required": [
+    "refused",
+    "reason",
+    "message"
+  ],
+  "type": [
+    "null",
+    "object"
+  ]
+}

Added value: +{
+  "description": "the WhatsApp display name of that account",
+  "type": "string"
+}

Added value: +{
+  "description": "the phone number of your account this message was sent from or received on, E.164",
+  "type": "string"
+}

Added value: +{
+  "additionalProperties": false,
+  "description": "present on an image, video, audio, document or sticker message: the file's mime type, size and name; fetch the bytes with wa_get_media",
+  "properties": {
+    "available": {
+      "description": "true when the file should be fetchable with wa_get_media(account_id, message_id) — a live received attachment; false for history and for files you sent, which are not kept",
+      "type": "boolean"
+    },
+    "file_name": {
+      "description": "documents only: the file name the sender gave it",
+      "type": "string"
+    },
+    "mime": {
+      "description": "the attachment's mime type as the sender declared it, e.g. image/jpeg or application/pdf; empty for a message stored before this was recorded",
+      "type": "string"
+    },
+    "size": {
+      "description": "the attachment's size in bytes as the sender declared it; 0 when unknown",
+      "type": "integer"
+    }
+  },
+  "required": [
+    "available"
+  ],
+  "type": [
+    "null",
+    "object"
+  ]
+}

Added value: +{
+  "description": "when this server received and stored the message, RFC3339; later than at for a message delivered late or loaded as history",
+  "type": "string"
+}

Added value: +{
+  "description": "who wrote the message, by name: for inbound the sender's name as saved in this account's contacts, or else the name they chose for themselves; for outbound this account's own WhatsApp name. Empty when no name is known",
+  "type": "string"
+}

Added value: +{
+  "description": "delivery status of an outbound message from the provider's receipts: sent, delivered, read or failed; empty when no receipt has arrived (or for inbound). Only Business (Cloud API) numbers report this today",
+  "type": "string"
+}