Social Media Autopilot Blueprint

A complete architecture for a social media automation app — AI caption generation, hashtag suggestions, multi-platform scheduling, and human approval gates before anything posts. 11 nodes, ready to export to Cursor or Claude Code.

What this app does

A social media automation app helps creators and brands post consistently across platforms — Instagram, X/Twitter, LinkedIn, Facebook — without spending hours writing captions and scheduling manually. The AI generates captions and hashtags from a brief description, schedules posts at optimal times, and routes everything through a human approval gate before publishing.

This blueprint maps out 11 nodes across frontend pages, backend APIs, AI prompts, a database, a scheduler, and a human checkpoint. It's designed for a solo creator or small marketing team managing 3-5 social accounts.

Architecture diagram

Node breakdown

Frontend pages

• Content Calendar — calendar view of all scheduled and published posts across platforms. Drag-and-drop rescheduling, filter by platform and status. Color-coded by platform (blue for LinkedIn, purple for Instagram, etc.).
• Post Composer — write or generate posts. Enter a brief description, select platform, AI generates caption + hashtags. Edit before approving. Preview how the post will look on each platform.
• Settings — connect social accounts (OAuth for each platform), set default posting times, configure brand voice (professional, casual, humorous), set approval workflow preferences.

Backend APIs

• Posts API — GET /api/posts (list with status and platform), POST /api/posts (create with caption, media, platform, scheduled time), PATCH /api/posts/:id (edit, approve, reschedule), DELETE /api/posts/:id.
• Social Accounts API — GET /api/accounts (connected accounts with platform and auth status), POST /api/accounts/connect (OAuth flow), POST /api/accounts/:id/publish (push approved post to platform).

AI prompts

• AI Caption Generator — input: brief description, platform, brand voice setting, character limit; task: generate a platform-appropriate caption; output: caption text (within platform limits: 280 chars for X, 2200 for Instagram, 3000 for LinkedIn).
• AI Hashtag Suggester — input: caption text, platform, niche/category; task: suggest relevant hashtags optimized for reach; output: 5-15 hashtags ranked by relevance. Excludes banned or spammy hashtags.

Human checkpoint

• Approval Gate — before any AI-generated post is published, a human reviews it in the Post Composer. They can edit the caption, swap hashtags, change the scheduled time, or reject. Nothing posts without explicit approval.

Database & services

• Social DB (PostgreSQL) — tables: posts (id, user_id, caption, media_url, platform, status, scheduled_at, published_at, created_at), social_accounts (id, user_id, platform, access_token, account_handle, connected_at), hashtags (id, post_id, tag), users (id, email, name, brand_voice, created_at).
• Post Scheduler — cron job that checks for approved posts due for publishing. Calls the Social Accounts API to push each post to its platform at the scheduled time. Handles rate limits and retries failed posts.

How it works end-to-end

1. User connects social accounts in Settings via OAuth
2. User opens Post Composer and enters a brief: "New product launch — eco-friendly water bottle, 20% off this week"
3. Selects platform (Instagram) and clicks "Generate"
4. AI Caption Generator creates a caption in the brand's voice, within Instagram's character limit
5. AI Hashtag Suggester generates relevant hashtags for the niche
6. The generated post appears in the Post Composer for review
7. User reviews at the Approval Gate — edits caption, swaps hashtags, picks a time
8. Post is saved as "approved" in the Social DB and appears on the Content Calendar
9. At the scheduled time, the Post Scheduler pushes the post to Instagram via the Social Accounts API
10. Post status updates to "published" on the calendar

The Approval Gate is what makes this safe for brands. AI-generated social content can be off-brand, insensitive, or factually wrong. A human reviews every post before it goes live — no exceptions.

Cursor export prompt

Open this blueprint in Bluemoonkey and export it, or copy the prompt below:

Build this app exactly as described.
Start with database schema and auth, then APIs, then frontend pages.

## Content Calendar (Frontend Page)
Calendar view of scheduled and published posts across all platforms.
Drag-and-drop rescheduling. Filter by platform and status. Color-coded.

## Post Composer (Frontend Page)
Write or generate posts. Enter brief, select platform, AI generates
caption and hashtags. Edit before approving. Platform preview.

## Settings (Frontend Page)
Connect social accounts via OAuth. Set default posting times.
Configure brand voice (professional, casual, humorous).

## Posts API (REST Endpoint)
- GET /api/posts — list with status and platform
- POST /api/posts — create with caption, media, platform, scheduled time
- PATCH /api/posts/:id — edit, approve, reschedule
- DELETE /api/posts/:id — remove post

## Social Accounts API (REST Endpoint)
- GET /api/accounts — connected accounts with auth status
- POST /api/accounts/connect — OAuth flow per platform
- POST /api/accounts/:id/publish — push approved post to platform

## Social DB (PostgreSQL)
- posts: id, user_id, caption, media_url, platform, status, scheduled_at, published_at, created_at
- social_accounts: id, user_id, platform, access_token, account_handle, connected_at
- hashtags: id, post_id, tag
- users: id, email, name, brand_voice, created_at

## AI Caption Generator (AI Prompt)
Input: brief description, platform, brand voice, character limit
Task: generate platform-appropriate caption in brand voice
Output: caption text within platform limits (280 X, 2200 Instagram, 3000 LinkedIn)

## AI Hashtag Suggester (AI Prompt)
Input: caption text, platform, niche/category
Task: suggest relevant hashtags optimized for reach
Output: 5-15 hashtags ranked by relevance, excluding banned tags

## Approval Gate (Human Checkpoint)
Before any AI-generated post is published, a human reviews it in the
Post Composer. Edit caption, swap hashtags, change scheduled time,
or reject. Nothing posts without explicit approval.

## Post Scheduler (Cron Job)
Checks for approved posts due for publishing every 15 minutes.
Pushes each post to its platform via Social Accounts API.
Handles rate limits and retries failed posts with exponential backoff.

For more prompt templates, see our Cursor prompt template or Claude Code prompt template. New to planning? Read how to plan an app before coding.

FAQ

What is a social media automation app?

A social media automation app schedules and publishes posts across platforms, uses AI to generate captions and hashtags, and includes human approval gates before anything goes live. It helps creators and brands post consistently without spending hours writing and scheduling manually.

Can I export this blueprint to Cursor?

Yes. Open this blueprint in Bluemoonkey's free canvas and export it as a structured AI prompt formatted for Cursor's Agent mode. Paste it into Cursor, add "Build this app exactly as described," and it generates the full project.

How many nodes does this blueprint have?

This blueprint has 11 nodes: 3 frontend pages, 2 APIs, 2 AI prompts, 1 human checkpoint, 1 database, and 1 scheduler. Every node is editable in the free canvas.

Does it support multiple social platforms?

Yes. The Social Accounts API uses OAuth to connect each platform. The AI Caption Generator adjusts output based on platform limits (280 chars for X, 2200 for Instagram, 3000 for LinkedIn). Each post specifies which platform it targets.