Imported from davepoon/buildwithclaude (plugins/all-skills/skills/upload-post/SKILL.md). Install upstream with npx skills add davepoon/buildwithclaude --skill upload-post. Copyright stays with the author (MIT).

Upload-Post

Publish one piece of content to many social platforms in a single API call.

Accounts are connected once through OAuth in the Upload-Post dashboard, so there is no per-platform developer app, review process, or token refresh to maintain. A single API key covers every platform.

When to Use This Skill

• The user wants the same video, carousel, or post published to several platforms at once
• The user wants a post scheduled for a future date, or added to a posting queue
• The user asks for per-post or per-platform analytics (views, likes, impressions)
• The user wants to check whether an upload finished, or retry the platforms that failed
• The user wants Instagram comment-to-DM automation (keyword triggers → private DMs)

What This Skill Does

1. Authenticates with Authorization: Apikey $UPLOAD_POST_API_KEY
2. Posts video, photos, text, or documents to one or more platforms in one request
3. Optionally schedules the post instead of publishing immediately
4. Polls upload status and reports the per-platform result
5. Reads analytics and upload history

Prerequisites

• An account at upload-post.com (free tier: 10 uploads/month)
• Social accounts connected in the dashboard
• A profile name (e.g. mybrand) — this groups the connected accounts and is what the user parameter refers to. It is not a social handle.
• UPLOAD_POST_API_KEY in the environment

How to Use

Base URL: https://api.upload-post.com/api

Auth uses the Apikey scheme, not Bearer. Sending Bearer returns a misleading 401 Invalid or expired token even when the key is valid.

Publish a video to several platforms

curl -X POST "https://api.upload-post.com/api/upload" \
  -H "Authorization: Apikey $UPLOAD_POST_API_KEY" \
  -F "user=mybrand" \
  -F "platform[]=tiktok" \
  -F "platform[]=instagram" \
  -F "platform[]=youtube" \
  -F "video=@clip.mp4" \
  -F "title=How to build better habits" \
  -F "async_upload=true"

platform[] is repeated once per target. title is required for YouTube and Reddit and optional everywhere else.

Publish a photo carousel

curl -X POST "https://api.upload-post.com/api/upload_photos" \
  -H "Authorization: Apikey $UPLOAD_POST_API_KEY" \
  -F "user=mybrand" \
  -F "platform[]=instagram" \
  -F "photos[]=@slide1.jpg" \
  -F "photos[]=@slide2.jpg" \
  -F "title=Five lessons from year one"

Schedule instead of publishing now

Add scheduled_date (ISO-8601) and optionally timezone (IANA):

-F "scheduled_date=2026-12-31T18:00:00Z" -F "timezone=Europe/Madrid"

Per-platform captions

title is the fallback. Override per platform with <platform>_title:

-F "title=New video out now" \
-F "tiktok_title=new vid 🔥 #fyp" \
-F "linkedin_title=A short breakdown of what we learned shipping this."

Check the result

Long uploads run in the background and return a request_id:

curl "https://api.upload-post.com/api/uploadposts/status?request_id=REQ_ID" \
  -H "Authorization: Apikey $UPLOAD_POST_API_KEY"

Other endpoints

Example

User: "Post this clip to TikTok, Reels and Shorts with the caption 'Day 1 of building in public'"

Output:

Publishing clip.mp4 to tiktok, instagram, youtube...
request_id: req_8f21c04a

Status: completed
  tiktok     ✅  https://tiktok.com/@mybrand/video/7412...
  instagram  ✅  https://instagram.com/reel/C8xY2...
  youtube    ✅  https://youtu.be/dQw4w9Wg...

Error Handling

• 401 Invalid or expired token with a key you know is good — you sent Bearer. Use Authorization: Apikey <key>.
• A platform fails while others succeed — the status response reports per-platform results. Retry only the failed ones by passing retry_request_id rather than re-uploading everything.
• reached_active_user_cap on TikTok — TikTok's daily cap for the app was hit. The upload falls back to the TikTok inbox as a draft; the video is waiting in the app, not live.
• Upload takes longer than 59 seconds — it switches to async automatically. Do not treat a timeout as a failure; poll /uploadposts/status with the request_id.
• Missing title on YouTube or Reddit — both reject the upload. Every other platform accepts an empty title.

Tips

• Send an Idempotency-Key header when retrying a request that may have already been accepted — it returns the existing job instead of double-posting.
• For TikTok, post_mode=MEDIA_UPLOAD puts the video in the app's drafts instead of publishing directly, which tends to get better organic reach.
• Use first_comment to drop a link or hashtags into the first comment automatically.
• The full parameter reference lives at docs.upload-post.com, with an LLM-friendly dump at https://docs.upload-post.com/llm.txt.

Resources

• API documentation: https://docs.upload-post.com
• Dashboard: https://upload-post.com
• Official skills repo: https://github.com/Upload-Post/upload-post-skills
• MCP connector: https://mcp.upload-post.com/mcp