PostWireDone with yoga before 7am. ☀️ New 6:15am class — 45 mins, first one's free. Save this & show up Monday! 🧘 #morningyoga #yogalife #commuteryoga #6amclub #yogastudio
Post to all social media with one API — with each post written for its network
Every API below posts to several networks through one integration. They differ in what they charge for (accounts, profiles, posts, channels or businesses), in whether there's a free plan, and in whether the API writes the posts for you.
Short answer. For the cheapest raw posting at volume, Post for Me or Outstand charge per post. For the most networks and SDKs, Ayrshare, Upload-Post and Zernio lead. If you want the API to write each network's version and publish it, priced per business with a free plan, that's PostWire. As of Sept 2026, we couldn't find another hosted API that writes a different native post per network from one prompt, in one call.
Every vendor fact below was read on the vendor's own page on Sept 26, 2026; the link is in the table.
Nine posting APIs, one line each
What each charges for, whether there's a free plan, whether it has an MCP server, and whether it writes the posts.
| API | Charges per | Free plan | MCP server | Writes a post per network |
|---|---|---|---|---|
| PostWire | Business (every network included) | Yes, 1 business, no card | Hosted; API key or OAuth 2.1 | Yes, from one prompt |
| Ayrshare | User profile | No (trial) | Hosted; Bearer key | No |
| Upload-Post | Profile bundles | Yes, no TikTok | Hosted (key or OAuth), and local | From a video, 4 networks |
| Zernio | Connected account | Yes, 2 accounts | Hosted, OAuth or key | No |
| Post for Me | Published post | No | Yes | No |
| Outstand | Published post | No | Hosted, 28 tools | No |
| bundle.social | Post volume | Yes, 20 posts a month | Yes | No |
| Buffer | Channel | Yes, 3 channels | Hosted; one channel per call | No |
| Blotato | Account cap + credits | No (trial without the API) | Hosted, OAuth or key | On request in chat |
Everyone here publishes text you send. “Writes a post per network” means the API itself returns a different native text for each network from one input.
Where the others are ahead of PostWire
- More networks, X and Reddit: Ayrshare, Upload-Post and Zernio cover 14–22 networks. PostWire has 9 live and no X or Reddit yet.
- SDKs: Zernio ships eight, Ayrshare and Post for Me several. PostWire has an OpenAPI spec, no SDK.
- Per-post pricing at high volume: Post for Me, Outstand and bundle.social charge by posts, with unlimited accounts. PostWire caps posts per plan and counts one per network.
What “post to all” takes with PostWire
Two calls. The first writes; the second publishes (or /api/schedule queues). Over MCP your agent does the same with generate_posts and post_to_social, and the n8n node can do both in one step.
curl -X POST https://postwire.io/api/generate \
-H "Authorization: Bearer $POSTWIRE_API_KEY" -H "Content-Type: application/json" \
-d '{"prompt":"We open a 6:15am class on Monday","platforms":["instagram","linkedin","bluesky"]}'
# returns { "drafts": { "instagram": {"text": …}, "linkedin": {…}, "bluesky": {…} } }
curl -X POST https://postwire.io/api/post \
-H "Authorization: Bearer $POSTWIRE_API_KEY" -H "Content-Type: application/json" \
-d '{"platforms":["instagram","linkedin","bluesky"],"per_platform":DRAFTS,"photo_url":"https://…"}'Before anything goes out, every named network is checked — connection, character limit, required media — and the whole request is refused if one would fail, instead of publishing to some and dropping the rest. Retries are safe: an identical post is refused for 2 minutes, or 24 hours with your own idempotency_key. Full reference: API reference.
One idea in, one post per network out
The first call returns this — one native draft per network, ready to publish with the second.
The idea: Our yoga studio opens a 6:15am class for commuters starting Monday. 45 minutes, done before 7, first class free.
we added a 6:15am yoga class for commuters starting monday. 45 mins, done before 7, first one's free. honestly just tired of hearing "I have no time" — this is the time 😄 #morningyoga #yoga
Real output from PostWire's writer on Sept 26, 2026, not edited (25.2 s for six networks; three shown). You review and edit before anything is published.
10 businesses on 5 networks each: the monthly bill
| Tool | How it's counted | Per month |
|---|---|---|
| PostWire Pro | 10 businesses fit in Pro (10 businesses, 2,000 posts a month; 10 × 20 posts × 5 networks = 1,000) | $29 |
| Post for Me | Base plan: up to 1,000 successful posts a month | $10 |
| Outstand | Per post: 3,000 included | $19 |
| Upload-Post Professional | 10 profiles | $50 |
| bundle.social | Pro: 10,000 posts a month, unlimited accounts | $100 |
| Zernio | 50 accounts: 2 free, 8 × $6, 40 × $3 | $168 |
| Buffer Essentials | 50 channels × $6 | $300 |
| Ayrshare Launch | 10 user profiles | $299 |
| Blotato Agency | 50 accounts, over Creator's 40 | $499 |
Monthly billing in USD, about 20 posts per business a month, read on Sept 26, 2026 from each vendor's pricing page (links in the table above). The two cheapest charge per published post and don't write per-network versions; Post for Me also has you bring your own platform credentials.
Sources, all read on Sept 26, 2026:
- Ayrshare pricing: www.ayrshare.com/pricing/
- Upload-Post pricing: www.upload-post.com/pricing
- Zernio pricing: zernio.com/pricing.md
- Post for Me pricing: www.postforme.dev/pricing
- Outstand pricing: www.outstand.so/pricing.md
- bundle.social pricing: bundle.social/pricing
- Buffer pricing: buffer.com/pricing
- Blotato pricing: www.blotato.com/pricing
Questions people ask
Is there an API that posts to all social media at once?
Yes, several: Ayrshare, Upload-Post, Zernio, Post for Me, Outstand, bundle.social, Buffer, Blotato and PostWire all publish to multiple networks through one integration. They differ in pricing unit, networks and whether they write the text.
Which API writes a different post for each network?
PostWire's /api/generate returns a native draft per network from one prompt, and /api/post publishes them. As of Sept 2026, we couldn't find another hosted API that writes a different native post per network from one prompt, in one call. Upload-Post's AI writes captions per network starting from a video, for four networks.
Which networks does PostWire's API post to?
TikTok, Instagram, Facebook Pages, YouTube, LinkedIn personal profiles, Bluesky, Mastodon, Telegram and Discord. X and Reddit are not available yet. TikTok and Meta use PostWire's approved apps, so you don't file your own app review.
What's the cheapest way to post to many accounts?
At high volume with text you already have, per-post pricing (Post for Me, Outstand) is cheapest. When each business is on several networks and you want the posts written, per-business pricing wins: 10 businesses on 5 networks is $29 a month on PostWire.
Is there a free plan?
PostWire: yes, 1 business, 30 posts a month, no card, API and MCP included. Paid plans have a 14-day refund.
Type one idea and see the post each network gets.
The demo on the home page writes live, with no account, and never publishes. The free plan covers one business on every live network, with no card and no time limit. Paid plans have a 14-day refund.