Schedule and manage social media posts via Postiz API (self-hosted or cloud).
Direct API integration — no n8n dependency.
Supports X/Twitter, LinkedIn, Bluesky with platform-specific character limits.
Includes deduplication, scheduling, media upload, and thread creation.
WHAT IT CAN DO:
- Schedule posts to 28+ channels (X, LinkedIn, Bluesky, Reddit, Instagram, Facebook, Threads, YouTube, TikTok, Pinterest, Mastodon, and more)
- Multi-platform posting in a single API call with platform-adapted content
- X/Twitter thread creation for longer content
- Media upload (file and URL)
- Find next available posting slot per channel
- List, query, update, and delete scheduled posts
- Deduplication workflow (check existing before posting)
- Platform-specific character limits and content tone guidance
- Post state management (QUEUE, PUBLISHED, ERROR, DRAFT)
- Helper script for quick posting with auto-validation
USE WHEN: scheduling social media posts, creating multi-platform content, managing a posting ca
Schedule and manage social media posts via Postiz API (self-hosted or cloud).
Direct API integration — no n8n dependency.
Supports X/Twitter, LinkedIn, Bluesky with platform-specific character limits.
Includes deduplication, scheduling, media upload, and thread creation.
WHAT IT CAN DO:
- Schedule posts to 28+ channels (X, LinkedIn, Bluesky, Reddit, Instagram, Facebook, Threads, YouTube, TikTok, Pinterest, Mastodon, and more)
- Multi-platform posting in a single API call with platform-adapted content
- X/Twitter thread creation for longer content
- Media upload (file and URL)
- Find next available posting slot per channel
- List, query, update, and delete scheduled posts
- Deduplication workflow (check existing before posting)
- Platform-specific character limits and content tone guidance
- Post state management (QUEUE, PUBLISHED, ERROR, DRAFT)
- Helper script for quick posting with auto-validation
USE WHEN: scheduling social media posts, creating multi-platform content, managing a posting calendar, uploading media for social posts, checking post status, creating X/Twitter threads, or automating social media workflows.
Postiz Social Media Scheduler
Direct API integration for social media posting. No n8n workflows needed.
Each connected account shows an ID (or use the API: GET /api/integrations/list)
Platform Limits
Platform
Character Limit
Notes
X/Twitter
280
Links count as 23 chars (t.co shortening)
LinkedIn
3,000
First 140 chars show in preview
Bluesky
300
Growing tech/developer audience
Platform Content Guidelines
X/Twitter (280 chars)
Short, punchy content
1-2 hashtags max
Threads for longer content (multiple tweets)
LinkedIn (3,000 chars)
Professional tone
Can be longer-form
Hashtags at end (3-5 recommended)
First 140 chars show in preview — make them count!
Bluesky (300 chars)
Similar to X but slightly more room
No official hashtag support (use sparingly)
Growing tech/developer audience
Authentication
# Login and save cookie (required before any API call)
curl -s -c /tmp/postiz-cookies.txt \
"$POSTIZ_URL/api/auth/login" \
-H 'Content-Type: application/json' \
-d "{\"email\":\"$POSTIZ_EMAIL\",\"password\":\"$POSTIZ_PASSWORD\",\"provider\":\"LOCAL\"}"
Cookie expires periodically. Re-run login if you get 401 errors.
"value":[{"content":"Post with image","image":[{"id":"MEDIA_ID","path":"/uploads/..."}]}]
Twitter/X Threads
For longer content on X, create a thread:
"value":[{"content":"Tweet 1/3: Introduction to the topic...","image":[]},{"content":"Tweet 2/3: The main point explained...","image":[]},{"content":"Tweet 3/3: Conclusion and call to action.","image":[]}]
Always query existing posts before creating new ones
Use unique identifiers in content (dates, specific references)
Check both QUEUE and PUBLISHED states
Scheduling
Space posts at least 2-4 hours apart per platform
Best times: 9 AM, 12 PM, 5 PM (audience timezone)
Avoid posting same content to all platforms simultaneously
Content Adaptation
Don't just truncate! Rewrite for each platform:
X: Hook + key insight + CTA
LinkedIn: Context + value + engagement question
Bluesky: Casual tech-friendly tone
Helper Scripts
Post to Multiple Platforms
# Single platform
uv run scripts/post.py \
--platform x \
--content "Your tweet here" \
--schedule "2026-02-05T15:00:00Z"# Multi-platform with different content
uv run scripts/post.py \
--x "Short X version" \
--linkedin "Longer LinkedIn version with more detail" \
--bluesky "Bluesky version" \
--schedule "2026-02-05T15:00:00Z"# Post immediately
uv run scripts/post.py \
--platform x \
--content "Posting now!" \
--now
# Validate without posting
uv run scripts/post.py \
--x "Test content" \
--validate
Check for Duplicates
# Check last 30 days
uv run scripts/check_duplicates.py
# Check last 7 days
uv run scripts/check_duplicates.py --days 7
# Check if specific content would be duplicate
uv run scripts/check_duplicates.py --content "Your proposed post content"
Troubleshooting
401 Unauthorized
Re-run the login curl command to refresh cookie.
Post Not Publishing
Check state is QUEUE not DRAFT
Verify date is in the future
Check integration is still connected in UI
Duplicate Posts
Always check existing posts before creating. The API doesn't deduplicate automatically.
Missing Environment Variables
Scripts will tell you which env vars are missing. Set them in your shell or .env file:
