PostFast postfa.st

Can AI replace PostFast?

Q: Can AI replace PostFast?

Half-bot. The core loop is the one every scheduler shares and it is genuinely one-shottable: a compose box, a slot queue, a cron tick, one adapter per network. Two things sit outside what a coding agent hands you in a session. The first is paperwork. Only Bluesky and Telegram give you working credentials on signup; the other nine of PostFast's eleven destinations wait behind Meta App Review for Instagram, Facebook, and Threads, a TikTok audit before an app may post publicly rather than to a private draft, YouTube's default 10,000-unit daily quota against 1,600 units per upload, approval flows at LinkedIn, Pinterest, and Google Business Profile, and X, where the free tier is capped tightly enough that real volume means paying. The second is video. Every platform enforces its own container, codec, aspect ratio, duration, and size rules, so anything past text and a JPEG turns into a transcode pipeline with somewhere to actually run the jobs and a retry story for the upload that dies at 90 percent. Build the text-and-image version for the two open networks in a sitting; the rest is review forms and a transcode queue.

The core loop is the one every scheduler shares and it is genuinely one-shottable: a compose box, a slot queue, a cron tick, one adapter per network. Two things sit outside what a coding agent hands you in a session. The first is paperwork. Only Bluesky and Telegram give you working credentials on signup; the other nine of PostFast's eleven destinations wait behind Meta App Review for Instagram, Facebook, and Threads, a TikTok audit before an app may post publicly rather than to a private draft, YouTube's default 10,000-unit daily quota against 1,600 units per upload, approval flows at LinkedIn, Pinterest, and Google Business Profile, and X, where the free tier is capped tightly enough that real volume means paying. The second is video. Every platform enforces its own container, codec, aspect ratio, duration, and size rules, so anything past text and a JPEG turns into a transcode pipeline with somewhere to actually run the jobs and a retry story for the upload that dies at 90 percent. Build the text-and-image version for the two open networks in a sitting; the rest is review forms and a transcode queue.

Verdict: Half-bot · AI gets you partway; the hard part stays hardBuild time: multi-day

Replacing a paid app means you set it up and keep it running: hosting, updates and backups can be on you. What you give up.

Half-bot

01What it costs

$33.45/moCreator, monthly

$401.40per year at that price

Checked Aug 14, 2026 · source: postfa.st.

Plan	Monthly	Billed yearly	What you get
Starter	$13.84	$11.53/mo	4 social accounts, 150 scheduled posts, 50 drafts, 1 workspace, 1 user, 90-day scheduling window, 30-day history, max 2 X accounts
Creator	$33.45	$27.68/mo	12 social accounts, 1,500 scheduled posts, 600 drafts, 4 workspaces, 5 users, 180-day window, 1-year history, max 6 X accounts
Growth	$56.52	$46.14/mo	30 social accounts, 3,000 scheduled posts, 2,000 drafts, 10 workspaces, 8 users, 240-day window, 2-year history, max 12 X accounts
Pro Agency	$114.19	$95.16/mo	120 social accounts, unlimited scheduled posts/drafts, 30 workspaces, 15 users, max 36 X accounts
Enterprise	$275.66	$229.53/mo	500 social profiles, unlimited scheduled posts/drafts, 110 workspaces, 30 users, max 45 X accounts

Hidden costs: Hard caps apply to social accounts, workspaces, users, queued posts, drafts and X accounts; going past them requires a higher plan. Prices are EUR and USD totals move with exchange rates.

02Could AI build it for you?

The core job: Compose posts into a slot-based queue, publish them on schedule to the open-API networks via per-network adapters, and expose the same queue over MCP so a coding agent can schedule too.

What a working version needs:

OAuth/API access per social network
always-on box for the scheduler
database
media storage
ffmpeg and somewhere to run transcodes for anything past text and images

Same shape as the other schedulers · the code is a weekend, the nine platform approvals and the video pipeline behind it are not.

03What you'd give up

nine of the eleven destinations, which need app review or a paid API tier rather than more code
pre-approved OAuth apps for Instagram, TikTok, YouTube, LinkedIn, Pinterest, and Google Business Profile
the video pipeline: per-platform container, codec, aspect ratio, duration, and size rules, plus async processing and the retries for when a large upload fails partway
token refresh and the steady patching as platform policies move
analytics, follower history, approval workflows, and per-client workspaces
the hosted API, MCP server, and n8n/Zapier/Make integrations that let an agent post for you

Connecting Instagram or TikTok here is one click because the OAuth app behind it already passed Meta App Review, TikTok's audit, and Google's business verification, a process that takes weeks and that a solo builder often cannot qualify for at all. Video is the other half of the bill: each platform enforces its own container, codec, aspect ratio, duration, and size rules, so a working scheduler runs a real transcode pipeline with async jobs, retries, and honest failure states rather than one hopeful upload call. The subscription also absorbs the work that never finishes: tokens expiring, per-platform media rules changing, endpoints deprecating on someone else's schedule. Above that sits the part a rebuild would not reach anyway, which is cross-account analytics and follower history, approvals and workspaces for running client accounts, and an API plus MCP server so your agent schedules through it instead of you maintaining a poster forever.

04Free and cheaper alternatives

BrightBean Studioopen-source

Publishing, analytics, approvals, API and MCP in a free hosted product; network count is broad, not eleven-shaped.

Versus paying: BrightBean does not promise PostFast's exact eleven-platform coverage or the same maturity of managed publishing and approval workflows.

brightbean.xyz →

Postizopen-source

More networks, team features, analytics, API and MCP; also more databases than a scheduler ought to need.

Versus paying: Postiz matches much of the feature surface, but its database, queue, Temporal and credential stack becomes your responsibility.

postiz.com →

TryPostopen-source

Twelve networks, analytics, approvals, REST and MCP; free software with non-free operational attention.

Versus paying: TryPost covers twelve networks and approvals, but running its database, queues, media storage and platform apps is the trade.

trypost.it →

Sponsor slot · openFeatured alternative to PostFast. A labeled card for one relevant tool.

Book this spot →

05The build prompt

Get the Build Kit for PostFast

The complete build prompt, plus 11 step-by-step prompts from research to launch, a design system file, a page-by-page spec, the data model and a launch checklist.

Get the Build Kit · $9 →

One-time payment. Delivered on screen and by email.