How do I post to multiple social networks at once?

Use an API that fans out a single request to each network. With PostWire you send one POST /api/post with a platforms array (e.g. ["bluesky","mastodon","telegram"]) and the same text/media — it publishes to all of them and returns a per-platform result. The same action is available as one MCP tool for AI agents.

Can I cross-post with one API call?

Yes. PostWire's /api/post endpoint accepts a platforms array, so one authenticated call publishes to every connected network in parallel. Adding a network is just another string in the array.

Which networks can PostWire cross-post to?

TikTok, Instagram, YouTube, LinkedIn, X, Reddit, Bluesky, Telegram, Mastodon and Discord — all through one API shape, each account connected via the platform's official OAuth flow.

How do I post to multiple social media platforms at once?

Send one request to PostWire and it fans the post out to every connected platform in native format.

Can I post to all social media at once with one API call?

Yes. A single PostWire API call publishes across all selected networks.

Is there a single API to post to multiple social media platforms?

Yes. PostWire reaches TikTok, Instagram, YouTube, LinkedIn, X, Bluesky, Mastodon, Telegram, Discord and Reddit from one endpoint.

Do I need to handle OAuth flows myself?

No. PostWire manages OAuth and token refresh per platform.

What's the cheapest way to post to multiple social platforms via API?

Start on PostWire's free tier; flat per-brand pricing avoids the per-profile cost that makes other APIs expensive at scale.

How to cross-post to multiple social networks via one API (2026)

To cross-post, use an API that fans out a single request to every network. With PostWire you send one POST /api/post with a platforms array — the same text and media publish to all of them at once, and you get a per-platform result back. The same action is one MCP tool call for AI agents.

The old way vs cross-posting via API

Posting the same update to several networks usually means logging into each app, or wiring up each platform's API separately — different auth, different payloads, different quirks. Cross-posting via API collapses that into one call: you connect each account once, then publish everywhere with a single request.

Step 1 — Get an API key (free)

Create a free PostWire account — 1 brand, 30 posts/month, no credit card. You get an API key instantly (and by email). Open the dashboard →

Step 2 — Connect your accounts once

Connect each social account in the dashboard. Open networks (Bluesky, Mastodon, Telegram, Discord) connect with a token or webhook; audited networks (TikTok, YouTube…) connect via OAuth. PostWire stores credentials encrypted (AES-256).

Step 3 — Cross-post with one call

List every network in the platforms array. One request, published in parallel:

curl -X POST https://postwire.io/api/post \
  -H "Authorization: Bearer $POSTWIRE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "platforms": ["bluesky", "mastodon", "telegram", "discord"],
    "text": "We just shipped a big update 🚀 https://example.com",
    "photo_url": "https://cdn.example.com/launch.png"
  }'

The response returns a per-platform result so you know exactly what succeeded:

{ "results": [
  { "ok": true,  "platform": "bluesky" },
  { "ok": true,  "platform": "mastodon" },
  { "ok": true,  "platform": "telegram" },
  { "ok": false, "platform": "discord", "error": "platform not connected — POST /api/connect first" }
] }

From an AI agent (MCP)

PostWire ships a first-class MCP server, so an agent cross-posts with one tool call — no HTTP plumbing:

{
  "name": "post_to_social",
  "arguments": {
    "platforms": ["bluesky", "mastodon", "telegram"],
    "text": "Shipped today 🚀"
  }
}

Better than cross-posting: a native post per platform

Sending the same text everywhere is the easy thing to do — and it's exactly what every algorithm penalizes (a 280-character tweet looks broken as a YouTube description; a hashtag-stuffed caption tanks on LinkedIn). PostWire's Smart Distribute fixes that: send one prompt (plus optional media) and it writes the best native post for each platform — correct character limits and hashtag rules, an SEO title and tags for YouTube, hook-first captions for TikTok/Reels, professional framing with the link in the first comment for LinkedIn, thread-friendly text with the link in a reply for X, CamelCase hashtags for Mastodon. It's one MCP tool (generate_posts) or one REST call (POST /api/generate), and generation is included free in the flat per-brand price.

Which networks can you cross-post to?

Network	Status
TikTok, Instagram, YouTube, Reddit	Supported
Bluesky, Telegram, Mastodon, Discord	Supported
X (Twitter), LinkedIn	Connect via OAuth

All use the same API shape — adding a network is one more string in platforms.

Start cross-posting free →

FAQ

How do I post to multiple social networks at once?: Send one POST /api/post with a platforms array (e.g. ["bluesky","mastodon","telegram"]) and the same text/media — PostWire publishes to all and returns a per-platform result. Same action as one MCP tool for agents.
Can I cross-post with one API call?: Yes. PostWire's /api/post accepts a platforms array, so one authenticated call publishes to every connected network in parallel. Adding a network is another string in the array.
Which networks can PostWire cross-post to?: TikTok, Instagram, YouTube, LinkedIn, X, Reddit, Bluesky, Telegram, Mastodon and Discord — all through one API shape, each account connected via the platform's official OAuth flow.
How do I post to multiple social media platforms at once?: Send one request to PostWire and it fans the post out to every connected platform in native format.
Can I post to all social media at once with one API call?: Yes. A single PostWire API call publishes across all selected networks.
Is there a single API to post to multiple social media platforms?: Yes. PostWire reaches TikTok, Instagram, YouTube, LinkedIn, X, Bluesky, Mastodon, Telegram, Discord and Reddit from one endpoint.
Do I need to handle OAuth flows myself?: No. PostWire manages OAuth and token refresh per platform.
What's the cheapest way to post to multiple social platforms via API?: Start on PostWire's free tier; flat per-brand pricing avoids the per-profile cost that makes other APIs expensive at scale.