Module

x/grammy/mod.ts>Api#unpinChatMessage

The Telegram Bot Framework.
grammyjs/grammY
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method Api.prototype.unpinChatMessage
import { Api } from "https://dotland.deno.dev/x/grammy@v1.31.0/mod.ts";

Use this method to remove a message from the list of pinned messages in a chat. If the chat is not a private chat, the bot must be an administrator in the chat for this to work and must have the 'can_pin_messages' administrator right in a supergroup or 'can_edit_messages' administrator right in a channel. Returns True on success.

Parameters

chat_id: number | string

Unique identifier for the target chat or username of the target channel (in the format @channelusername)

optional
message_id: number

Identifier of a message to unpin. If not specified, the most recent pinned message (by sending date) will be unpinned.

optional
signal: AbortSignal

Optional remaining parameters, confer the official reference below