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REPLACEMENT BRIEF

social media

Can AI replace PostFast?

EDITORIAL ANSWERKINDACurated prompt

Auto-publishing to the open-API networks is a buildable scheduler — adapters plus a queue. The product's real scope is the gated nine of eleven: platform apps that need review or paid API tiers, plus analytics and approval workflows — the access, not the publish button.

Reviewed · DeepFeather editorial

known limits 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

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.

Build the personal version →

AT A GLANCE

price
$33/mo
listed annual price
$396/yr
replaceable scope
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.
build time
multi-day
Build promptreviewed prompt · not run

the prompt

Curated prompt
Build me a personal social scheduler my coding agent can drive, to replace PostFast. Requirements:

- Node + Express + better-sqlite3 on my always-on box. Two interfaces over one core:
  a localhost page (compose box, media attach, queue by send time) and a stdio MCP
  server via @modelcontextprotocol/sdk with create_post, list_posts, and delete_post,
  so Claude Code can schedule without me opening the page.
- Open-API networks only: Bluesky (app password via @atproto/api), Mastodon (access
  token), Telegram channel (bot token). One adapter file per network, creds in .env.
- For the gated platforms (Instagram, TikTok, YouTube, Facebook, Threads, LinkedIn,
  Pinterest, Google Business Profile) do not fight the APIs: at send time push me an
  ntfy.sh alert with the caption and media path and I post by hand. The README says
  plainly that these need reviewed developer apps, not more code.
- Slot-based queue: posting times per weekday in my timezone, new posts take the next
  free slot or pin to an exact datetime; one post fans out to several networks with
  per-network text.
- A node-cron tick every minute sends what is due, marks the row sending before it
  calls anything so a crash never double-posts, retries 3 times with backoff, then
  records sent or failed with the error.
- Media in media/ beside the database, images resized per network with sharp. Video:
  accept MP4 only and check duration, aspect ratio, and size against each network's
  limits at attach time, rejecting with the limit in the message rather than fixing it.
- A history page of the last 100 sends linking to the live posts.
- Binds to localhost only. No accounts, no telemetry, everything stays on my box.
- Out of scope: video transcoding, analytics, approval workflows, and workspaces.
  Do not build auth.
- README: Bluesky app password, Mastodon token, Telegram bot token, wiring the MCP
  server into Claude Code, and a warning that social APIs drift and need patching.
Copy or open in an agent

The prompt stays readable first. Choose a launch option when you are ready.

$ open in your agent (prompt prefilled, you press enter) or copy it raw

what AI can build

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.

The prompt was editor-reviewed; no completed build is recorded.

The honest tradeoff

why people still pay

Teams pay for the pre-approved access — OAuth apps for the platforms that gate behind review — because the code posts to the easy networks and the subscription posts to the ones that matter.

what you lose

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

Start with existing software

prior art · use these instead of building, if you'd rather

PostizAGPL social scheduler, self-hostable, covers the DIY core for the open-API networks.↗

EVIDENCE LEDGER

What this page can prove

The verdict judges replaceability. The evidence level records what DeepFeather actually checked.

Read the methodology →
evidence level
Curated prompt

The prompt was editor-reviewed; no completed build is recorded.

replacement boundaryCompose 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.

known limits · 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

editorial reviewawaiting manual review

BUILD FEEDBACK

Did you try this build?

Report the outcome. Submissions enter a manual evidence queue and never auto-upgrade the verdict.

Post Bridge
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questions

Can AI replace PostFast?

Possibly for a narrower core workflow. Expected gaps include: 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. This is an editorial catalog judgment, not a verified build; validate any result against your own acceptance criteria.

How much does PostFast cost?

PostFast is listed at about $33/month (Creator, checked 2026-07-31), or $396 per year. This is a pricing reference, not evidence of a completed replacement or realized savings.

What do I lose by replacing PostFast?

Honestly: 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. If any of those are load-bearing for you, keep paying.

Is there an open-source alternative to PostFast?

Yes — Postiz (AGPL social scheduler, self-hostable, covers the DIY core for the open-API networks.). Using prior art is also a valid exit; the prompt is for when you want it exactly your way.