You can start PostWharf free and get the full Starter plan for seven days, with the REST API, MCP server, CLI and webhooks included; cancel before it ends and you pay nothing.
How we chose and ordered them
A product made this list when it met three conditions:
- A documented API that creates and schedules posts on several social networks through one integration, rather than one network at a time.
- A way in without a sales call: a published plan a developer can sign up to, or open-source code they can run themselves. Tools whose API sits only on a custom Enterprise plan, such as SocialPilot, were left out.
- Published pricing on the vendor's own pages or docs.
PostWharf's figures come from its own product code and pricing page, read on 22 October 2026. Every rival fact comes from one web search per fact on the same day or from our own comparison pages, and the entry says so where the result came from a third party or from us rather than the vendor. Where two copies of a rival's price disagreed, the entry says so, and where both carried a date we used the newer one.
PostWharf is first because we make it and this is the job it was built for. The other nine are ordered by how many networks each one says its API reaches, because reach is the first thing a posting API is bought for, and ties go to the lower paid entry price. "Not found" in the table means our search did not turn the feature up; it is not a confirmed absence.
The ten at a glance
Prices are monthly, in US dollars, as published on 22 October 2026. The "30 channels, 6 brands" column prices the same job on every product: six brands, each on five networks.
| # | API | Networks | Billed per | Paid plans from | 30 channels, 6 brands | MCP server | CLI |
|---|---|---|---|---|---|---|---|
| 1 | PostWharf | 10 live | Workspace (one brand), channels unlimited | $15, 200 posts | $67 (Plus) | Yes, twenty tools | Yes |
| 2 | Postiz | Over 30 | Channel (cloud); free to self-host | $29, 5 channels | $49 (Pro) | Yes | Yes |
| 3 | Zernio | 15 or more | Connected account, in bands | $6 an account (3rd to 10th) | $108 | Yes, hosted | Not confirmed |
| 4 | bundle.social | 14 or more | Organisation | $100, 10,000 posts | $100 (Pro) | Yes | Yes |
| 5 | Upload-Post | 13 | Profile | $24, 5 profiles | $50 (Professional), one profile per brand | Yes, 45 tools | Not found |
| 6 | Ayrshare | 13 | Social profile | $149, 1 profile | $299 (Launch) | Yes, hosted | Not found |
| 7 | Buffer API | 11 | Channel | About $5 a channel | $135 (Essentials) | Yes | Yes |
| 8 | Postproxy | 11 | Profile, or profile group | $17, 5 profiles | $49 (Business) | Yes | Not found |
| 9 | Outstand | 11 | Post | $19, 3,000 posts | $19 below 3,000 posts | Yes | Not found |
| 10 | PostPeer | 9 | Credit | $25, 2,000 credits | $25 below 2,000 credits | Yes | Not found |
What 30 channels across six brands costs
The pricing unit decides the bill more than the headline price does. A workspace, organisation or per-post price stays flat as channels are added; a per-channel or per-account price grows with every account a client brings.
- PostWharf: six brands need six workspaces, so Plus at $67, which holds ten workspaces and 1,000 posts a month.
- Postiz cloud: 30 channels is the Pro tier at $49.
- Zernio: the first two accounts are covered by a monthly credit, accounts 3 to 10 cost $6 each and accounts 11 to 100 cost $3 each, so 30 accounts come to $108. Posts to X add X's own API charge on top.
- bundle.social: Pro at $100 covers unlimited accounts and 10,000 posts. X posts are billed per use on top.
- Upload-Post: if each brand is one profile, six profiles need Professional at $50, since Basic holds five.
- Ayrshare: a social profile holds one account per network, so six brands are six profiles, which is Launch at $299.
- Buffer: 30 channels on Essentials are $135 a month, or $112.50 billed yearly.
- Postproxy: on the Business plan a profile group usually maps to one brand, and $49 includes 20 groups.
- Outstand and PostPeer: both charge by usage with unlimited accounts, so Outstand's $19 covers this job until it passes 3,000 posts a month, and PostPeer's $25 until it passes 2,000 credits (fewer posts if many are X posts with links).
1. PostWharf
Best for: one post to many accounts across several brands, sent from code, a terminal or an AI agent, with proof of what landed on each network.
PostWharf puts a REST API, an MCP server with twenty tools, a CLI and webhooks in front of the same queue, so a post sent from a script, from Claude or from the terminal (npm i -g postwharf, then wharf) is scheduled, retried and reported the same way. It publishes to ten networks today: Instagram, TikTok, X, LinkedIn, YouTube, Facebook, Threads, Pinterest, Bluesky and Telegram. PostWharf holds the platform relationship for eight of them, so there is no app review to file; Bluesky and Telegram connect with a credential you create in your own account.
Every post gets a delivery receipt for each network, re-checked after publishing, with the reason when one fails. You can poll GET /posts/:id or subscribe to a webhook, and each delivery carries the address of the post on the network, or a note saying why it has none. On media, PostWharf accepts a carousel post on Instagram, Facebook, TikTok, Threads and LinkedIn; a Pinterest post carries one image, and a Bluesky post up to four images and no video.
Pricing is per workspace, one per brand, with unlimited channels in each: Starter is $15 a month for 200 posts, Startup $29 for 400 posts and three workspaces, Plus $67 for 1,000 posts and ten workspaces, and Pro $99 for 2,500 posts and unlimited workspaces. Starter is free for seven days. A post over the monthly cap is refused with a message naming the limit, never billed as an overage.
Where it falls short: Reddit, Discord, Snapchat and WordPress are request-only, so PostWharf cannot post there yet. It reports delivery rather than analytics, and has no social listening or engagement inbox. The developer docs show the REST calls, MCP tools and CLI commands side by side, and you can start free to try them on your own accounts.
Sources: PostWharf's pricing page and its code (postwharf.com), read 22 October 2026.
2. Postiz
Best for: the widest list of platforms, or a team that wants to run the scheduler on its own servers.
Postiz is open source under AGPL-3.0 and free to self-host, with a hosted cloud version priced per channel. It counts more than 30 platforms, which reach past the social networks into blogs such as Medium, Dev.to, Hashnode and WordPress and chat apps such as Discord, Slack and Telegram. The public API is available on every cloud tier and on a self-hosted install, alongside an MCP server and a CLI installed with npm install -g postiz that returns JSON and can read platform analytics.
Cloud Standard is $29 a month for five channels and Pro is $49 for 30. A third-party pricing summary from October 2026 adds Team at $39 for ten channels and Ultimate at $99 for 100, with unlimited posts on each.
Where it falls short: self-hosting means registering your own developer app with every network, and TikTok will not approve an app for private use. On the cloud plans the bill steps up with channel count. Our PostWharf vs Postiz page does that arithmetic.
Sources: Postiz docs (docs.postiz.com), our own Postiz comparison, and a third-party pricing summary for the Team and Ultimate tiers, read 22 October 2026.
3. Zernio
Best for: billing per connected account, with analytics, an inbox and ads in the same price.
Zernio prices every connected account in bands, each account at its own band's rate: the first two are covered by a monthly credit, the 3rd to 10th cost $6 each, the 11th to 100th $3, and the 101st to 2,000th $1, with custom pricing beyond. There are no plan tiers; analytics, the inbox, ads and API access come with every paid account, and billing is prorated by the day. Its MCP docs put the API's reach at 15 platforms or more, and its hosted MCP server exposes 496 tools, signing in with OAuth or an API key.
Where it falls short: X's pay-per-call charges are passed through at cost, such as $0.015 for each post created, and the bill tracks the account count, so 30 accounts are $108 a month.
Sources: Zernio's pricing and MCP docs (docs.zernio.com), read 22 October 2026.
4. bundle.social
Best for: high post volume at one flat price per organisation.
bundle.social bills per organisation, with unlimited users. Free gives 20 posts and 50 comments a month on three social accounts, with API access. Pro is $100 a month for 10,000 posts, 5,000 comments and unlimited accounts; Business is $400 for 100,000 posts, and Enterprise is priced on request. It says its one API covers 14 platforms or more, and it ships an official MCP server, a JSON-first CLI and a typed TypeScript SDK, all on the same REST API.
Where it falls short: the step from Free to paid is $100. X usage is billed per use from a prepaid balance, at $0.015 a post and $0.20 a post with a link.
Sources: bundle.social's pricing and developer pages (bundle.social), read 22 October 2026.
5. Upload-Post
Best for: a profile per client, white label from the Professional plan, and a free tier to test on.
Upload-Post prices by profile. Free gives 10 uploads a month on two profiles, without TikTok posting. Basic is $24 a month ($16 billed annually) for five profiles with TikTok, Professional $50 ($33) for 25 profiles and white label, Advanced $147 for 75 and Business $438 for 225. Paid plans set no limit on API upload calls. A directory listing that mirrors its FAQ names 13 networks: TikTok, Instagram, YouTube, LinkedIn, Facebook, X, Threads, Pinterest, Reddit, Bluesky, Google Business, Discord and Telegram. Its MCP server exposes 45 tools, and the server's source is MIT-licensed.
Where it falls short: each connected account has a daily cap, and hitting it returns an HTTP 429 error. The Free plan cannot post to TikTok, and we found no statement on carousel posts in what we read.
Sources: Upload-Post's docs (docs.upload-post.com) and MCP directory listings for the network list (glama.ai, mcp.so), read 22 October 2026.
6. Ayrshare
Best for: software platforms and agencies posting for many external accounts on 13 networks.
Ayrshare bills per active social profile, and a profile holds one account on each network. Premium is $149 a month for one profile, up to 13 accounts across 13 networks: Facebook, Instagram, LinkedIn, YouTube, TikTok, Pinterest, Reddit, Threads, Bluesky, Telegram, Google Business Profile, Snapchat and X. Launch is $299 for up to ten profiles, with webhooks and higher API rate limits, and Business is the plan for platforms beyond ten profiles. Its hosted MCP server lets an agent publish, schedule and analyse posts, and a Claude Code plugin bundles the server's set-up.
Where it falls short: the entry plan is $149. The copies of the Business price we read disagree, so ask Ayrshare for it, and we found no standalone CLI.
Sources: Ayrshare's pricing page and docs (ayrshare.com), read 22 October 2026.
7. Buffer API
Best for: a team already scheduling in Buffer that wants to script it.
Buffer's API is on every Buffer plan, Free included. It is a single GraphQL endpoint, and Buffer also offers an MCP server on every plan and a CLI. It reaches 11 networks: Facebook, Instagram, X, LinkedIn, Pinterest, TikTok, Google Business Profile, Mastodon, YouTube Shorts, Threads and Bluesky. Billing is per channel: Free covers three channels, paid plans start at about $5 a channel a month, and 30 channels on Essentials are $135 a month.
Where it falls short: each API key gets 100 requests per 15 minutes on every plan, and 3,000 a month on Free, 7,500 on Essentials and 15,000 on Team; Free also has one API key. The API covers posts, ideas, channels and metrics, not the whole dashboard, and every new account adds to a per-channel bill. Our Buffer pricing comparison works through the 30-channel case.
Sources: Buffer's developer docs, help centre and API announcement (developers.buffer.com, support.buffer.com, buffer.com) and our own pricing page, read 22 October 2026.
8. Postproxy
Best for: AI agents, with an MCP connector for Claude and ChatGPT that signs in with OAuth.
Postproxy's pricing page splits plans by use. Agentic is billed per connected profile, from $17 a month with five profiles and extra profiles from $4 each; Business is billed per profile group, from $49 a month with 20 groups, and a group usually maps to one brand with up to 11 platforms. Both list unlimited posts, and you can start free with 10 posts. Its MCP server connects three ways, all with the same tools: a connector URL for Claude and ChatGPT, a hosted remote server with an API key, and a local postproxy-mcp npm package. The tools include post statistics, and it is listed in the official MCP registry.
Where it falls short: X is capped at 20 posts per 24 hours per account. Another copy of its pricing, with post caps per plan, is also in circulation, and we found no CLI.
Sources: Postproxy's pricing and MCP pages (postproxy.dev), read 22 October 2026.
9. Outstand
Best for: pay-by-the-post pricing with unlimited connected accounts.
The newest dated copy of Outstand's pricing we found, checked by a third-party pricing site on 20 July 2026, is $19 a month with 3,000 posts included, then $0.007 a post up to 10,000 and $0.005 beyond, with unlimited connected accounts, 11 platforms, and either managed keys or your own. An older copy dated June 2026 shows $5 a month plus $0.01 a post. Its MCP server launched in March 2026 with 27 tools and connects with OAuth or an API key.
Where it falls short: Outstand publishes its prices on its homepage and the copies we found disagree, so check before budgeting. We found no CLI.
Sources: a third-party pricing page (thatmarketingbuddy.com), a rival's comparison page (ayrshare.com) and an MCP directory listing (mcpservers.org), read 22 October 2026.
10. PostPeer
Best for: steady volume on the mainstream networks, with prepaid credits that do not expire.
PostPeer bills in credits: a free tier of 20 credits, then Starter at $25 a month for 2,000 credits on its pricing page ($17 on its comparison pages), Standard with 6,000 and Pro with 20,000 ($43 and $120 on the comparison pages). A credit is not always a post: X bills per request, and PostPeer's pricing page says an X post with a URL costs about 13 times a plain one. All plans come with unlimited connected accounts, plus one-time credit packs that never expire. It posts to nine networks: X, Instagram, YouTube (Shorts included), TikTok, LinkedIn, Facebook, Pinterest, Threads and Bluesky. The REST API publishes an OpenAPI spec, and an agent-skills listing says the same key works for its MCP server.
Where it falls short: nine networks is the fewest on this list, and its own pages disagree on the Starter price.
Sources: PostPeer's own pages (postpeer.dev) and an agent-skills listing (lobehub.com), read 22 October 2026.
Before you commit to one
Whichever you shortlist, test it on one low-risk brand first: connect real accounts, send a carousel and a video, and check what the API tells you when a network refuses a post. Our seven checks for choosing a scheduling REST API cover authentication, retries and delivery status in more depth.
If your posts already start in code, a terminal or an AI assistant, start PostWharf free: seven days of the full Starter plan, ten live networks, and a receipt for every network each post goes to.
Common questions
What is the best API for posting to multiple social media platforms?
For one post to many accounts across several brands, from code or an AI agent, PostWharf: a REST API, MCP server and CLI over one queue, ten live networks, a receipt per network, and unlimited channels from $15 a month per workspace. For the most platforms, Postiz, over 30 by its own count; for per-account billing with analytics, Zernio; for high volume at a flat price, bundle.social; inside an existing Buffer account, Buffer's API.
Is there a free social media posting API?
PostWharf's Starter plan is free for seven days, with the full API, MCP server and CLI. For a free tier that lasts, several entries have one with limits: Zernio covers two accounts with a monthly credit, bundle.social gives 20 posts a month on three accounts, Upload-Post 10 uploads on two profiles without TikTok, Buffer three channels, Postproxy 10 posts, and PostPeer 20 credits. Postiz is free to self-host if you register your own app with each network.
Which social media posting APIs have an MCP server?
All ten on this list. PostWharf's twenty tools drive the same queue as its REST API and CLI, so a post sent from Claude or ChatGPT gets the same delivery receipts. Zernio's hosted server exposes 496 tools, Upload-Post's 45, and Outstand launched with 27; Ayrshare, Postiz, bundle.social, Buffer, Postproxy and PostPeer each run one too.
PostWharf is priced per workspace rather than per connected channel, and every plan carries unlimited channels. See per-brand pricing.