Works, with rewrites

How to post from Bluesky to Telegram

You can, but not by copying the text across: 2 things change between Bluesky and Telegram, starting with you have 3,700 characters you are not using. Below is exactly what breaks and what to do instead.

Side by side

BlueskyTelegram
Characters3004,000
Mediaoptionaloptional
Hashtags1-2 specific hashtagsnot needed
Links in bodyfinefine
Needs platform approvalnono

What changes, one by one

You have 3,700 characters you are not using

Bluesky caps at 300 characters, Telegram allows 4,000. Posting the short version verbatim wastes the room Telegram gives you to actually explain the thing.

The hashtag rules are not the same

Bluesky: 1-2 specific hashtags. Telegram: not needed. Carrying the tag block across is the single most obvious sign of an automated cross-post.

Why copy-paste cross-posting underperforms

Bluesky is indie and anti-corporate — polished brand voice reads badly. Telegram is direct and clear; formatting is light. Those are different jobs, so the same words cannot do both well — and every algorithm here demotes text that obviously was not written for it. The fix is not to skip cross-posting; it is to send a native version to each network.

Publish to both in one call

curl -X POST https://postwire.io/api/post \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "platforms": ["bluesky", "telegram"],
    "text": "Your post",
    "per_platform": {
      "bluesky": { "text": "The Bluesky version" },
      "telegram": { "text": "The Telegram version" }
    }
  }'

PostWire's /api/generate writes those per-platform versions for you from a single prompt, respecting every limit in the table above. From an AI agent it is one MCP tool call.

Do this without writing the post twice

PostWire takes one idea and publishes a version written for each network — the right length, hashtags and format per platform. It also refuses posts that would fail, like a video network with no video, before they are queued.

Free for one brand — 30 posts a month, no card. Starter is $9/month for three brands and 300 posts. There is a REST API and an MCP server if you would rather automate it.

Start free — no card →

Questions people actually ask

Can I cross-post from Bluesky to Telegram?
You can, but not by copying the text across: 2 things change between Bluesky and Telegram, starting with you have 3,700 characters you are not using. Below is exactly what breaks and what to do instead.
What is the character limit difference between Bluesky and Telegram?
Bluesky allows 300 characters and Telegram allows 4,000.
How do I post to Bluesky and Telegram at the same time?
With PostWire, one API call publishes to both: POST /api/post with platforms set to ["bluesky","telegram"]. Or one MCP tool call from an AI agent.

Other pairs: Telegram to Bluesky · all combinations · which APIs need approval

Want this to run without you? Six tools that cross-post automatically, with the prices read off each vendor's own page.