Automated Social Studio & Multi-Platform Publisher

Turn raw creative video and image assets into high-converting, platform-tailored social campaigns automatically scheduled, published, and tracked across TikTok, Instagram Reels, YouTube Shorts, LinkedIn, and X (Twitter).

Powered by FOTOhub's Social Studio (server/social-engine/), this recipe links vision analysis, LLM copywriting, multi-account OAuth dispatch, automated first-comment hashtag strategies, and post-publish performance analytics into a single autonomous pipeline.

Why Automate?

Manual social media publishing is slow and prone to errors. Using FOTOhub's robust Social Studio API allows you to build an internal content calendar that adapts aspect ratios, injects trending hashtags, and optimally schedules your content while keeping track of analytics—all via API.

1. Architectural Workflow

mermaid

flowchart TD
    subgraph Ingestion
        A["Raw Media Asset Ingestion (S3 / Video to Shorts / Virtual Try-On)"] 
    end
    
    subgraph Pre-Flight & AI Analysis
        A --> B["Vision & Context Analysis (/v1/ai/analyze-image)"]
        B --> MOD["Content Moderation Pre-flight (/v1/social/moderate)"]
        MOD --> C["Platform-Specific Copywriting Engine (/v1/social/captions/generate)"]
    end
    
    subgraph Adaptation
        C --> D1["TikTok Variant (Fast Hook, Sound Tags, Trends)"]
        C --> D2["IG Reels Variant (Aesthetic Luxury, First-Comment Cloud)"]
        C --> D3["YouTube Shorts Variant (SEO Keywords, CTR Title)"]
        C --> D4["X / Twitter Variant (Punchy 280-char Thread Hook)"]
        C --> D5["LinkedIn Variant (Professional, Case Study Format)"]
        
        A --> RESIZE["Multi-platform Format Adaptation (/v1/media/resize)"]
        RESIZE --> D1
        RESIZE --> D2
        RESIZE --> D3
        RESIZE --> D4
        RESIZE --> D5
    end
    
    subgraph Scheduling
        D1 & D2 & D3 & D4 & D5 --> E["Optimal Publishing Window Calculator (/v1/social/optimal-time)"]
        E --> F["Schedule Unified Multi-Channel Post (POST /v1/social/schedule)"]
    end
    
    subgraph Execution
        F --> G["FotoHUB Background Scheduler Engine (APScheduler / Celery)"]
        G --> H["OAuth Publication Dispatch (TikTok, Meta Graph, YT Data, X API)"]
    end
    
    subgraph Post-Execution
        H --> I["Signed Webhook Broadcast (social.post.published / X-FotoHub-Signature)"]
        I --> J["Automated First-Comment Engagement Injection"]
        H --> K["Post Performance & Engagement Sync (/v1/social/analytics/{post_id})"]
        H --> BYOB["BYOB S3/R2 Export: Auto-archive Metadata + Media"]
    end

GPU Affinity

Under the hood, FOTOhub routes different operations to specialized GPU clusters:

GPU2: MMAudio generation (if background music is added)
GPU3: MuseTalk/LipSync (if a digital avatar is talking)
GPU4/5: 3D Generation and high-end video encoding

2. Platform-Specific Constraints

Each platform has strict constraints. The API automatically returns validation errors if these limits are breached.

Platform	Max Video Duration	Aspect Ratio	Max File Size	Caption Length
TikTok	10 min	9:16	1 GB	2,200 chars
Instagram Reels	15 min	9:16	1 GB	2,200 chars
YouTube Shorts	60 sec	9:16	256 MB	5,000 chars
LinkedIn	10 min	16:9 / 1:1	5 GB	3,000 chars
Twitter/X	2:20 min	any	512 MB	280 chars

3. Production Economics & USD Billing

Social Studio operations are billed directly against your prepaid USD wallet at exact pass-through rates. Pure USD billing only.

Operation	Cost (USD)	Description
Caption generation with hashtags	$0.003	AI text generation optimized per platform with hashtags
Single platform publish	$0.001	Dispatched to one social network
Multi-platform bulk publish	$0.004	Dispatched to up to 5 platforms at once
Analytics fetch	Free	Retrieve up-to-date engagement metrics
Optimal Time Analysis	$0.001	Calculate best time to post
Multi-platform format adaptation	$0.020	Auto-resize video for 9:16 / 1:1 / 16:9
Content Moderation Pre-flight	$0.002	Vision analysis to detect unsafe/violating content

4. OAuth Account Connection Flow

To publish, you must first connect social accounts via OAuth.

`POST /v1/social/accounts/connect`

Generates an OAuth connection link to redirect your users to.

Parameter	Type	Required	Default	Description
`platform`	string	Yes	—	`"tiktok"`, `"instagram"`, `"youtube"`, `"twitter"`, `"linkedin"`
`redirect_uri`	string	Yes	—	The URI FOTOhub will redirect back to after auth
`scopes`	string[]	No	All	Specific permissions required

PythonTypeScriptGocURL

python

import requests

url = "https://apis.fotohub.app/v1/social/accounts/connect"
headers = {
    "Authorization": "Bearer fh_live_your_api_key",
    "Content-Type": "application/json"
}
data = {
    "platform": "tiktok",
    "redirect_uri": "https://your-app.com/callback/tiktok"
}
response = requests.post(url, headers=headers, json=data)
print(response.json())

typescript

import axios from 'axios';

async function connectAccount() {
  const response = await axios.post('https://apis.fotohub.app/v1/social/accounts/connect', {
    platform: 'tiktok',
    redirect_uri: 'https://your-app.com/callback/tiktok'
  }, {
    headers: {
      'Authorization': 'Bearer fh_live_your_api_key'
    }
  });
  console.log(response.data);
}

package main

import (
	"bytes"
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {
	url := "https://apis.fotohub.app/v1/social/accounts/connect"
	payload := []byte(`{"platform":"tiktok","redirect_uri":"https://your-app.com/callback/tiktok"}`)
	req, _ := http.NewRequest("POST", url, bytes.NewBuffer(payload))
	req.Header.Set("Authorization", "Bearer fh_live_your_api_key")
	req.Header.Set("Content-Type", "application/json")
	
	client := &http.Client{}
	resp, _ := client.Do(req)
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
}

bash

curl -X POST https://apis.fotohub.app/v1/social/accounts/connect \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "platform": "tiktok",
    "redirect_uri": "https://your-app.com/callback/tiktok"
  }'

`GET /v1/social/accounts`

List all connected accounts.

Parameter	Type	Required	Default	Description
`status`	string	No	`active`	Filter by `active`, `expired`, `all`
`platform`	string	No	—	Filter by specific platform

PythonTypeScriptGocURL

python

import requests

url = "https://apis.fotohub.app/v1/social/accounts"
headers = {
    "Authorization": "Bearer fh_live_your_api_key",
}
response = requests.get(url, headers=headers)
print(response.json())

typescript

import axios from 'axios';

async function listAccounts() {
  const response = await axios.get('https://apis.fotohub.app/v1/social/accounts', {
    headers: {
      'Authorization': 'Bearer fh_live_your_api_key'
    }
  });
  console.log(response.data);
}

package main

import (
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {
	url := "https://apis.fotohub.app/v1/social/accounts"
	req, _ := http.NewRequest("GET", url, nil)
	req.Header.Set("Authorization", "Bearer fh_live_your_api_key")
	
	client := &http.Client{}
	resp, _ := client.Do(req)
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
}

bash

curl -X GET https://apis.fotohub.app/v1/social/accounts \
  -H "Authorization: Bearer fh_live_your_api_key"

5. Content Moderation Pre-Flight

Before attempting to schedule a post, check for platform compliance.

`POST /v1/social/moderate`

Parameter	Type	Required	Default	Description
`media_url`	string	Yes	—	Public URL to media
`text`	string	No	—	Associated text

Pre-flight Savings

A rejected post on TikTok can shadowban an account. Running a $0.002 pre-flight check saves hours of debugging.

6. Multi-Platform Format Adaptation

FOTOhub can automatically pad, crop, or resize video assets.

`POST /v1/media/resize`

Parameter	Type	Required	Default	Description
`media_url`	string	Yes	—	Public URL to media
`target_aspect_ratio`	string	Yes	—	e.g. `9:16`, `16:9`, `1:1`
`strategy`	string	No	`smart_crop`	`pad`, `crop`, `smart_crop`

7. Caption Generation & Hashtag Optimization

Generate customized captions per platform based on a single topic.

`POST /v1/social/captions/generate`

Parameter	Type	Required	Default	Description
`topic`	string	Yes	—	Subject matter
`platform`	string	Yes	—	Target platform
`tone`	string	No	`casual`	`professional`, `casual`, `funny`, `luxury`
`include_hashtags`	boolean	No	`true`	Append hashtags
`hashtag_count`	integer	No	`5`	Number of tags

PythonTypeScriptGocURL

python

import requests

url = "https://apis.fotohub.app/v1/social/captions/generate"
headers = {
    "Authorization": "Bearer fh_live_your_api_key",
    "Content-Type": "application/json"
}
data = {
    "topic": "AI virtual try-on technology demo",
    "platform": "instagram",
    "tone": "luxury",
    "include_hashtags": True,
    "hashtag_count": 15
}
response = requests.post(url, headers=headers, json=data)
print(response.json())

typescript

import axios from 'axios';

async function generateCaption() {
  const response = await axios.post('https://apis.fotohub.app/v1/social/captions/generate', {
    topic: 'AI virtual try-on technology demo',
    platform: 'instagram',
    tone: 'luxury',
    include_hashtags: true,
    hashtag_count: 15
  }, {
    headers: {
      'Authorization': 'Bearer fh_live_your_api_key'
    }
  });
  console.log(response.data);
}

package main

import (
	"bytes"
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {
	url := "https://apis.fotohub.app/v1/social/captions/generate"
	payload := []byte(`{"topic":"AI virtual try-on technology demo","platform":"instagram","tone":"luxury","include_hashtags":true,"hashtag_count":15}`)
	req, _ := http.NewRequest("POST", url, bytes.NewBuffer(payload))
	req.Header.Set("Authorization", "Bearer fh_live_your_api_key")
	req.Header.Set("Content-Type", "application/json")
	
	client := &http.Client{}
	resp, _ := client.Do(req)
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
}

bash

curl -X POST https://apis.fotohub.app/v1/social/captions/generate \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "topic": "AI virtual try-on technology demo",
    "platform": "instagram",
    "tone": "luxury",
    "include_hashtags": true,
    "hashtag_count": 15
  }'

8. Publishing & Scheduling

Schedule or instantly publish to multiple platforms.

`POST /v1/social/schedule` (or `/v1/social/publish`)

Parameter	Type	Required	Default	Description
`media_url`	string	Yes	—	The video/image URL
`target_accounts`	string[]	Yes	—	Array of account UUIDs
`scheduled_at`	string	No	`now`	ISO8601 UTC time for scheduling
`variants`	object[]	Yes	—	Overrides per platform

Variant Object

Field	Type	Description
`platform`	string	`tiktok`, `instagram`, etc.
`text`	string	Caption text
`first_comment`	string	Optional first comment text

PythonTypeScriptGocURL

python

import requests

url = "https://apis.fotohub.app/v1/social/schedule"
headers = {
    "Authorization": "Bearer fh_live_your_api_key",
    "Content-Type": "application/json"
}
data = {
    "media_url": "https://static.fotohub.app/demo/vid.mp4",
    "target_accounts": ["acc_123", "acc_456"],
    "scheduled_at": "2026-10-10T12:00:00Z",
    "variants": [
        {"platform": "tiktok", "text": "Check this out!"},
        {"platform": "instagram", "text": "Aesthetic vibe.", "first_comment": "#tags #here"}
    ]
}
response = requests.post(url, headers=headers, json=data)
print(response.json())

typescript

import axios from 'axios';

async function schedulePost() {
  const response = await axios.post('https://apis.fotohub.app/v1/social/schedule', {
    media_url: 'https://static.fotohub.app/demo/vid.mp4',
    target_accounts: ['acc_123', 'acc_456'],
    scheduled_at: '2026-10-10T12:00:00Z',
    variants: [
      {platform: 'tiktok', text: 'Check this out!'},
      {platform: 'instagram', text: 'Aesthetic vibe.', first_comment: '#tags #here'}
    ]
  }, {
    headers: {
      'Authorization': 'Bearer fh_live_your_api_key'
    }
  });
  console.log(response.data);
}

package main

import (
	"bytes"
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {
	url := "https://apis.fotohub.app/v1/social/schedule"
	payload := []byte(`{"media_url":"https://static.fotohub.app/demo/vid.mp4","target_accounts":["acc_123"],"scheduled_at":"2026-10-10T12:00:00Z","variants":[{"platform":"tiktok","text":"Wow!"}]}`)
	req, _ := http.NewRequest("POST", url, bytes.NewBuffer(payload))
	req.Header.Set("Authorization", "Bearer fh_live_your_api_key")
	req.Header.Set("Content-Type", "application/json")
	
	client := &http.Client{}
	resp, _ := client.Do(req)
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
}

bash

curl -X POST https://apis.fotohub.app/v1/social/schedule \
  -H "Authorization: Bearer fh_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "media_url": "https://static.fotohub.app/demo/vid.mp4",
    "target_accounts": ["acc_123"],
    "scheduled_at": "2026-10-10T12:00:00Z",
    "variants": [{"platform": "tiktok", "text": "Wow!"}]
  }'

9. Async Bulk Publish

If you are scheduling massive content calendars (e.g., 20+ posts a week).

`POST /v1/social/bulk`

Parameter	Type	Required	Default	Description
`jobs`	object[]	Yes	—	Array of schedule objects

SSE Streaming

Bulk endpoints return a 202 Accepted with a job_id. You can connect via Server-Sent Events (SSE) to monitor progress, or wait for the webhook.

10. Engagement Analytics

Fetch post analytics after publication.

`GET /v1/social/analytics/{post_id}`

Parameter	Type	Required	Default	Description
`post_id`	string	Yes	—	ID returned from publish/schedule

PythonTypeScriptGocURL

python

import requests

url = "https://apis.fotohub.app/v1/social/analytics/post_123"
headers = {
    "Authorization": "Bearer fh_live_your_api_key"
}
response = requests.get(url, headers=headers)
print(response.json())

typescript

import axios from 'axios';

async function getAnalytics() {
  const response = await axios.get('https://apis.fotohub.app/v1/social/analytics/post_123', {
    headers: {
      'Authorization': 'Bearer fh_live_your_api_key'
    }
  });
  console.log(response.data);
}

package main

import (
	"fmt"
	"net/http"
	"io/ioutil"
)

func main() {
	url := "https://apis.fotohub.app/v1/social/analytics/post_123"
	req, _ := http.NewRequest("GET", url, nil)
	req.Header.Set("Authorization", "Bearer fh_live_your_api_key")
	
	client := &http.Client{}
	resp, _ := client.Do(req)
	body, _ := ioutil.ReadAll(resp.Body)
	fmt.Println(string(body))
}

bash

curl -X GET https://apis.fotohub.app/v1/social/analytics/post_123 \
  -H "Authorization: Bearer fh_live_your_api_key"

11. Webhooks & HMAC Verification

When async jobs complete, we POST to your webhook endpoint.

Payload Examples

Publish Success:

json

{
  "event": "social.post.published",
  "timestamp": "2026-09-12T18:00:04Z",
  "post_id": "post_123",
  "results": [
    {
      "platform": "tiktok",
      "success": true,
      "platform_post_id": "71982348719238",
      "url": "https://www.tiktok.com/@fotohubapp/video/71982348719238"
    }
  ]
}

Publish Failed:

json

{
  "event": "social.post.failed",
  "timestamp": "2026-09-12T18:00:04Z",
  "post_id": "post_123",
  "error": {
    "code": "account_suspended",
    "message": "The TikTok account is suspended and cannot post."
  }
}

TypeScript Express Webhook Receiver

typescript

import express from 'express';
import crypto from 'crypto';

const app = express();
const WEBHOOK_SECRET = process.env.FOTOHUB_WEBHOOK_SECRET!;

// Use raw body for HMAC validation
app.post('/webhook', express.raw({ type: 'application/json' }), (req, res) => {
  const signature = req.headers['x-fotohub-signature'] as string;
  
  const hash = crypto
    .createHmac('sha256', WEBHOOK_SECRET)
    .update(req.body)
    .digest('hex');

  if (hash !== signature) {
    return res.status(401).send('Invalid signature');
  }

  const payload = JSON.parse(req.body.toString());
  console.log('Received event:', payload.event);

  if (payload.event === 'social.post.published') {
    console.log('Post published to:', payload.results);
  }

  res.status(200).send('OK');
});

app.listen(3000, () => console.log('Webhook receiver running on port 3000'));

Python Webhook Receiver (FastAPI)

python

from fastapi import FastAPI, Request, Header, HTTPException
import hmac
import hashlib
import os

app = FastAPI()
WEBHOOK_SECRET = os.getenv("FOTOHUB_WEBHOOK_SECRET", "").encode()

@app.post("/webhook")
async def webhook(request: Request, x_fotohub_signature: str = Header(None)):
    body = await request.body()
    
    computed_sig = hmac.new(WEBHOOK_SECRET, body, hashlib.sha256).hexdigest()
    
    if not hmac.compare_digest(computed_sig, x_fotohub_signature):
        raise HTTPException(status_code=401, detail="Invalid signature")
        
    payload = await request.json()
    print(f"Received event: {payload['event']}")
    
    return {"status": "ok"}

12. Advanced: Python Asyncio Batch Publisher

For heavy workloads (20+ posts/week), use asyncio.

python

import asyncio
import aiohttp
import os

API_KEY = os.getenv("FOTOHUB_API_KEY")
HEADERS = {"Authorization": f"Bearer {API_KEY}"}

async def schedule_single(session, url, data):
    async with session.post(url, json=data) as resp:
        return await resp.json()

async def batch_schedule(posts):
    url = "https://apis.fotohub.app/v1/social/schedule"
    async with aiohttp.ClientSession(headers=HEADERS) as session:
        tasks = [schedule_single(session, url, post) for post in posts]
        results = await asyncio.gather(*tasks)
        return results

# Usage
# posts = [{"media_url": "...", "target_accounts": ["..."]}, ...]
# results = asyncio.run(batch_schedule(posts))

13. A/B Caption Testing

Publish the same video with two caption variants sequentially to measure performance.

Post Variant A today at 5 PM.
Archive the post after 24h.
Post Variant B tomorrow at 5 PM.
Compare /v1/social/analytics/{post_id} engagement metrics.

14. Rate Limit Handling & Retries

Platform specific rate limits:

TikTok: 200/day
Instagram: 25/hour
LinkedIn: 100/day

If FOTOhub receives a rate limit, the API returns HTTP 429. Implement exponential backoff or use our background scheduler.

DLQ (Dead Letter Queue) Pattern

All failed asynchronous publish jobs are queued into a DLQ. You can poll /v1/social/dlq to replay failed messages.

15. BYOB (Bring Your Own Bucket) S3/R2 Export

Automatically archive published content and metadata to your AWS S3 or Cloudflare R2 buckets.

Provide credentials in the Console. FOTOhub will save:

post_123.mp4
post_123_metadata.json (contains analytics up to 7 days, caption variants, and hashtags)

16. Error Codes

Code	HTTP Status	Description	Solution
`account_suspended`	400	Social account is blocked.	Resolve block on platform.
`invalid_token`	401	FOTOhub API Key is invalid.	Check API key.
`oauth_expired`	403	Platform OAuth token expired.	Re-connect via `/v1/social/accounts/connect`.
`rate_limit_exceeded`	429	Exceeded platform limits.	Wait or reduce volume.
`media_too_large`	400	File exceeds platform max.	Compress or trim video.
`insufficient_funds`	402	USD wallet empty.	Top up in FOTOhub console.

Automated Social Studio & Multi-Platform Publisher ​

1. Architectural Workflow ​

2. Platform-Specific Constraints ​

3. Production Economics & USD Billing ​

4. OAuth Account Connection Flow ​

POST /v1/social/accounts/connect ​

GET /v1/social/accounts ​

5. Content Moderation Pre-Flight ​

POST /v1/social/moderate ​

6. Multi-Platform Format Adaptation ​

POST /v1/media/resize ​

7. Caption Generation & Hashtag Optimization ​

POST /v1/social/captions/generate ​

8. Publishing & Scheduling ​

POST /v1/social/schedule (or /v1/social/publish) ​

Variant Object ​

9. Async Bulk Publish ​

POST /v1/social/bulk ​

10. Engagement Analytics ​

GET /v1/social/analytics/{post_id} ​

11. Webhooks & HMAC Verification ​

Payload Examples ​

TypeScript Express Webhook Receiver ​

Python Webhook Receiver (FastAPI) ​

12. Advanced: Python Asyncio Batch Publisher ​

13. A/B Caption Testing ​

14. Rate Limit Handling & Retries ​

DLQ (Dead Letter Queue) Pattern ​

15. BYOB (Bring Your Own Bucket) S3/R2 Export ​

16. Error Codes ​

Automated Social Studio & Multi-Platform Publisher

1. Architectural Workflow

2. Platform-Specific Constraints

3. Production Economics & USD Billing

4. OAuth Account Connection Flow

`POST /v1/social/accounts/connect`

`GET /v1/social/accounts`

5. Content Moderation Pre-Flight

`POST /v1/social/moderate`

6. Multi-Platform Format Adaptation

`POST /v1/media/resize`

7. Caption Generation & Hashtag Optimization

`POST /v1/social/captions/generate`

8. Publishing & Scheduling

`POST /v1/social/schedule` (or `/v1/social/publish`)

Variant Object

9. Async Bulk Publish

`POST /v1/social/bulk`

10. Engagement Analytics

`GET /v1/social/analytics/{post_id}`

11. Webhooks & HMAC Verification

Payload Examples

TypeScript Express Webhook Receiver

Python Webhook Receiver (FastAPI)

12. Advanced: Python Asyncio Batch Publisher

13. A/B Caption Testing

14. Rate Limit Handling & Retries

DLQ (Dead Letter Queue) Pattern

15. BYOB (Bring Your Own Bucket) S3/R2 Export

16. Error Codes