Telegram: coming soon

Publish text, photos, videos, documents and albums to Telegram channels and groups, and edit or delete them, through the Postgale API and MCP server.

Coming soon. Telegram is not available yet: Telegram channels and groups cannot be connected in production, so none of the endpoints or tools below work against Telegram today. This page describes the planned integration and may change before launch.

Postgale publishes to Telegram channels and groups with its own bot (Telegram Bot API): text messages, one photo, video or document, or an album of 2 to 10 items, with edits and deletes of what was published. Everything is available over the REST API (paths relative to https://postgale.com/api/v1) and the MCP server (connect_account, create_post, manage_published_post, get_analytics). Each connected channel or group is one account with platform telegram; its platformAccountId is the Telegram chat id.

Connect a channel or group

Telegram has no sign-in for bots, so connecting works with a one-time code instead of a link:

  1. In Postgale open Dashboard → Accounts → Telegram (or ask for a code with the API or connect_account). You get a code that works once and expires after 15 minutes.
  2. In Telegram, add Postgale's bot (shown with the code) to your channel or group as an administrator with the right to post messages. In channels the right is called Post messages.
  3. Post /connect <code> in the channel or group. In groups /connect@<bot> <code> works too. You can also post it in the channel and forward that post to the bot in a private chat.

The chat appears as a Telegram account within seconds (the dashboard waits for it; API clients get the account.connected webhook or see it in GET /accounts). When the bot may delete messages, it removes the /connect message afterwards.

POST /api/v1/connect/telegram
curl -X POST https://postgale.com/api/v1/connect/telegram \
  -H 'Authorization: Bearer sk_…' \
  -H 'Content-Type: application/json' \
  -d '{"externalId":"cust-1"}'

# {"platform":"telegram","code":"K7PQ2MXH9D","command":"/connect K7PQ2MXH9D","botUsername":"PostgaleBot","instructions":[…],"expiresAt":"…","expiresInSeconds":900}

GET /connect/telegram?externalId=… returns the same. externalId (your own reference) is stored on the account that the code connects.

If the bot is removed from the chat or loses the right to post, the account becomes needs_reconnect and account.disconnected is sent (reason bot_removed). Making the bot an admin with the right to post again restores it; posting /connect with a new code works too.

Publish

The post content is the message, up to 4096 characters. With media it is the caption of the photo, video, document or of the first album item, up to 1024 characters. Both limits count the visible text (after parseMode markup) and are checked when the post is created. Postgale uploads the files to Telegram itself: photos up to 10 MB, videos and documents up to 50 MB. Use the publicUrl of uploaded media or any public https URL.

POST /api/v1/posts
curl -X POST https://postgale.com/api/v1/posts \
  -H 'Authorization: Bearer sk_…' \
  -H 'Content-Type: application/json' \
  -d '{"content":"<b>Release 2.4</b> is out: faster sync and dark mode.","platforms":[{"accountId":"acc_tg","platformSpecificData":{"parseMode":"HTML","disableLinkPreview":true}}],"publishNow":true}'
POST /api/v1/posts
curl -X POST https://postgale.com/api/v1/posts \
  -H 'Authorization: Bearer sk_…' \
  -H 'Content-Type: application/json' \
  -d '{"content":"Photos from the meetup 📸","platforms":[{"accountId":"acc_tg","platformSpecificData":{"mediaUrls":["https://media.postgale.com/…/1.jpg","https://media.postgale.com/…/2.jpg","https://media.postgale.com/…/clip.mp4"],"disableNotification":true}}],"publishNow":true}'
platformSpecificDataWhat it does
mediaUrlOne photo, video or document (public https URL)
mediaUrlsAn album of 2-10 items (one URL is a single media post). Photos and videos can be mixed; documents only with documents
mediaTypetext | photo | video | document (default: from the URL extension: jpg/png/webp photo, mp4/mov video, anything else document)
parseModeMarkdownV2 or HTML (default: plain text). Edits keep it
disableNotificationDeliver silently
disableLinkPreviewText posts: no link preview

The target's platformPostId is text:<message_id>, media:<message_id> or group:<id>.<id>… (every message of an album), and url is the message's t.me link (public chats, or t.me/c/… for members of private supergroups and channels).

Edit and delete

MethodPathWhat it does
POST/posts/{id}/edit{content}: new text of a text post, or new caption of a media post or album (same limits, same parseMode)
POST/posts/{id}/unpublishDelete the message, or every message of an album
GET/analytics/accounts/{id}followers: the chat's member count
GET/accounts/{id}/healthWhether the bot is still an admin that may post, the chat title and member count

Both are queued for a person while approval applies to the API key, the organization or the account (202 pending_approval; MCP manage_published_post returns the queued action). Telegram only lets bots delete messages from the last 48 hours.

Telegram's rules to know

  • Rate limits: when Telegram answers 429, Postgale retries the post after the retry_after Telegram asks for. Telegram allows about 20 messages per minute per group.
  • Rights: in channels the bot must be an admin with Post messages (and Edit messages of others / Delete messages is not needed for its own posts). In groups it must be an admin.
  • Errors: "bot was kicked", "not enough rights" or "chat not found" mark the account needs_reconnect (reconnect_required on the API).
  • Analytics: the Bot API gives bots no views or reactions per message, so post analytics answer not_supported; the member count is available as an account metric.
  • Groups upgraded to supergroups get a new chat id from Telegram; Postgale follows the change automatically.

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