Buffer API alternative: one prompt in, every network's post out

Buffer's API is open to new developers — the free plan includes a key and 3,000 requests a month — and its MCP server uses that key, which makes it a solid choice for pushing your own text to channels. Each call handles one channel, and the text is yours to write. PostWire's API writes each network's version from one prompt, then publishes them together.

Short answer. If you already have the text and a few channels, Buffer's free API is enough. If your code or agent would otherwise make N calls and write N versions, PostWire does the writing in one request and publishes to every network, for $0–$29 up to 10 businesses.

Every Buffer price and feature here was read on Buffer's own pages on Sept 26, 2026, with the link next to it. If they changed since, their page wins.

PostWire and Buffer at a glance

PostWireBuffer
What you pay forOne business, every network in itPer channel (each connected account): $6 on Essentials, $12 on Team, billed monthly
Cheapest paid plan$9 a month (3 businesses)$6 per channel a month (Essentials; $5 billed yearly)
Free planYes — 1 business, 30 posts a month, no cardYes — 3 channels; 1 API key, 3,000 requests per 30 days
10 businesses × 5 networks$29 a month$300
Writes a different post per network from one ideaYes — one request writes them allNo — one call posts your text to one channel
MCP server for AI agentsHosted, API key or OAuth 2.1, 9 toolsHosted, with your Buffer API key; one call per channel
n8nCommunity node (n8n verification pending)Verified node
X and RedditNot yetX yes; Reddit no
Refund or guarantee14 days on paid plansNone published

What Buffer does better

  • A free API key (3,000 requests a month) and an MCP server on a mature platform. PostWire's free plan has API and MCP too, for 1 business.
  • More networks, including X, Threads, Pinterest, Google Business Profile and LinkedIn company Pages. Not on PostWire yet.
  • A full app around the API: analytics, inbox and a mobile app for the humans on your team. PostWire's dashboard only writes, publishes and schedules.
  • Zapier and Make. PostWire has neither app published yet; Make works through its HTTP module.

When to pick which

Pick Buffer if…

  • Your text is already written and you post to a few channels.
  • You need X, Threads or Pinterest from the API.
  • Your team already works in Buffer's dashboard.

Pick PostWire if…

  • You want one request that returns a TikTok caption, a YouTube title, description and tags, a LinkedIn post and more — then one more call to publish them all.
  • You'd otherwise pay per channel: 10 businesses on 5 networks is $29 here.
  • You want to add it to Claude by signing in with OAuth, or call it from n8n or Make.

10 businesses on 5 networks each: the monthly bill

An agency or a freelancer with ten clients, each on five networks, about 20 posts per client a month. That is 50 connected accounts, which is where the pricing unit decides the bill.

ToolHow it's countedPer month
PostWire Pro10 businesses fit in Pro (10 businesses, 2,000 posts a month; 10 × 20 posts × 5 networks = 1,000)$29
Buffer Essentials50 channels × $6 (billed yearly: 50 × $5 = $250)$300

Monthly billing in USD, before tax. Source: buffer.com/pricing, read on Sept 26, 2026; PostWire's prices come from the code that bills you.

What “a different post per network” means

Buffer publishes the text you send it. PostWire writes each network's version first — a hook for TikTok, a searchable title and tags for YouTube, a longer first-person post for LinkedIn — and then publishes them.

The idea: Our invoicing app just shipped dark mode. 412 users asked for it, and it took us 3 weeks because we redid every chart.

TikTokVideo caption

412 users asked. We finally shipped dark mode 🌑 But it took 3 weeks — because we rebuilt every single chart from scratch. The details nobody sees = the work that matters most. Drop a 🖤 if you wanted dark mode in your invoicing app #darkmode #saas #buildinpublic #productdesign #indiedev

288 of 2,200 characters
YouTubeTitle, description, tags

Dark Mode is Live 🌑 | Why It Took 3 Weeks to Ship

Dark mode is finally live in our invoicing app — and 412 users asked for it before we built a single pixel. #darkmode What looks like a simple color switch was actually a full 3-week rebuild. Every chart, every data visualization, every graph had to be redesigned from the ground up to work in a dark environment. We weren't going to ship something that half-worked. In this video, we walk you through: — Why dark mode in a data-heavy app is way harder than it sounds — How we prioritized this based on real user requests — The chart redesign process, color contrast decisions, and accessibility checks — What we'd do differently next time If you're building a SaaS product or thinking about shipping dark mode yourself, this one's for you. The stuff users never see is usually the hardest work. #buildinpublic #saasdesign Timestamps: 0:00 — Why 412 people finally convinced us 1:30 — The chart problem nobody warned us about 4:00 — Our redesign process 7:20 — The final result

982 of 5,000 characters
LinkedInProfile post

412 users asked for dark mode. We shipped it last week. Here's the part that surprised us: It took 3 weeks — not because dark mode is hard, but because we have charts. Every chart in our invoicing app had to be rebuilt from scratch. Colors that look clean on a white background? They're invisible or eye-straining on dark. Contrast ratios that pass accessibility standards in light mode? Fail completely in dark. So we didn't just flip a CSS variable and call it done. We redesigned every data visualization. Every axis label. Every tooltip. Every legend. Three weeks of work that most users will never consciously notice — and that's exactly the point. We track feature requests in a dead-simple spreadsheet. When dark mode crossed 400 votes, it jumped straight to the top of the queue. No roadmap committee. No prioritization framework. Just 412 real people saying the same thing. The lesson we keep relearning: Listening to users is easy to say and easy to fake. Actually doing it means sometimes rebuilding things you thought were finished. We think that's the job. If you're building a product right now — how do you decide when a feature request has earned its spot on the roadmap? #BuildInPublic #SaaS #ProductDevelopment

1,244 of 3,000 characters

Real output from PostWire's writer on Sept 26, 2026, not edited (23.4 s for six networks; three shown). You review and edit before anything is published.

Network by network

PostWire's column is what our production setup can publish on Sept 26, 2026. Buffer's column is what Buffer lists on its own page; "Not listed" means we could not find it there.

NetworkPostWireBuffer
TikTokLive approved Jul 7, 2026Yes
InstagramLive business/creatorYes
Facebook PagesLive PagesYes
YouTubeLiveYes
LinkedIn profileLive text postsYes
LinkedIn company PageNot yetYes
XNot yetYes
RedditNot yetNo
ThreadsNot yetYes
PinterestNot yetYes
BlueskyLiveYes
MastodonLiveYes
TelegramLiveNo
DiscordLiveNo

Both price lists

Buffer

PlanWhat's includedPer month
Free3 channels, 10 scheduled posts per channel, 1 API key$0
EssentialsPer channel$6
TeamPer channel, unlimited members$12

Monthly prices; billed yearly, $5 and $10 per channel. API limits: Free 3,000 requests per 30 days, Essentials 7,500, Team 15,000. From Buffer's pricing page, Sept 26, 2026.

PostWire

PostWire planBusinessesPosts a monthPer month
Free130$0
Starter3300$9
Pro102,000$29
Agency5015,000$99
Scale200Unlimited$299

Per business, every live network included, AI writing included. A post counts once per network. Monthly billing; no annual plan yet. Full pricing.

Sources, all read on Sept 26, 2026:

Questions people ask

Is PostWire a good Buffer alternative?

Yes, if you want the API to write each network's post and publish them together, billed per business. No, if you only need to push text you already have to a few channels — Buffer's free API does that well, with X and more networks.

What does Buffer do better than PostWire?

A free API key (3,000 requests a month) and an MCP server on a mature platform. PostWire's free plan has API and MCP too, for 1 business. More networks, including X, Threads, Pinterest, Google Business Profile and LinkedIn company Pages. Not on PostWire yet. A full app around the API: analytics, inbox and a mobile app for the humans on your team. PostWire's dashboard only writes, publishes and schedules. Zapier and Make. PostWire has neither app published yet; Make works through its HTTP module.

How much does Buffer cost compared to PostWire?

Buffer charges per channel (each connected account): $6 on Essentials, $12 on Team, billed monthly; its cheapest paid plan is $6 per channel a month (Essentials; $5 billed yearly) (read on Sept 26, 2026 from https://buffer.com/pricing). PostWire charges per business with every network included: Free for 1 business, $9 for 3, $29 for 10, $99 for 50. For 10 businesses on 5 networks each: $300 on Buffer against $29 on PostWire.

Does PostWire post to X or Reddit?

Not yet. X and Reddit are not available on PostWire today; Reddit is waiting on Reddit's API access approval. Live today: TikTok, Instagram, Facebook Pages, YouTube, LinkedIn (personal profiles), Bluesky, Mastodon, Telegram and Discord.

How many calls does PostWire need to post everywhere?

Two over REST: POST /api/generate returns a native draft per network from one prompt, and POST /api/post publishes them (or POST /api/schedule queues them). The n8n node can do both in one step, and over MCP you ask once and the agent calls generate_posts then post_to_social.

Is there a free plan and a refund?

Yes. The free plan covers 1 business, 30 posts a month, every live network, no card and no time limit. Paid plans can be refunded in full within 14 days of the first payment, through the support form.

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.