| Bluesky | Discord | |
|---|---|---|
| Characters | 300 | 2,000 |
| Media | optional | optional |
| Hashtags | 1-2 specific hashtags | not needed |
| Links in body | fine | fine |
| Needs platform approval | no | no |
Bluesky caps at 300 characters, Discord allows 2,000. Posting the short version verbatim wastes the room Discord gives you to actually explain the thing.
Bluesky: 1-2 specific hashtags. Discord: not needed. Carrying the tag block across is the single most obvious sign of an automated cross-post.
Bluesky is indie and anti-corporate — polished brand voice reads badly. Discord is casual and short, like talking in a channel. 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.
curl -X POST https://postwire.io/api/post \
-H "Authorization: Bearer $POSTWIRE_API_KEY" \
-H "Content-Type: application/json" \
-d '{
"platforms": ["bluesky", "discord"],
"text": "Your post",
"per_platform": {
"bluesky": { "text": "The Bluesky version" },
"discord": { "text": "The Discord 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.
Other pairs: Discord to Bluesky · all combinations · which APIs need approval