Introducing PostPeer: We Built a Social Media Posting API
SocialKit started as a way to pull data OUT of social media. Video summaries, transcripts, engagement metrics, comments. If you needed to understand what was happening on YouTube, TikTok, or Instagram, SocialKit gave you structured data from a single API call.
But there was always the other half. Getting data out is great. Putting content IN is where the real automation happens.
So we built PostPeer.
What is PostPeer
PostPeer is a social media posting API. One API call, every platform. Twitter, Instagram, LinkedIn, TikTok, YouTube, Pinterest, Threads, Bluesky, and more.
You send a POST request with your content and which platforms to publish to. PostPeer handles OAuth, media uploads, platform-specific formatting, and scheduling. No building separate integrations for each social network.
curl -X POST https://api.postpeer.dev/v1/posts \
-H "x-access-key: your-api-key" \
-H "Content-Type: application/json" \
-d '{
"content": "Just shipped a new feature!",
"platforms": [
{ "platform": "twitter", "accountId": "acc_tw_123" },
{ "platform": "linkedin", "accountId": "acc_li_456" }
],
"publishNow": true
}'
That's it. Both platforms get the post.
Why we built it
SocialKit handles the "read" side of social media. PostPeer handles the "write" side. Together they close the loop. Extract insights from social content, then publish new content back.
If you're building a social media tool, a content management system, or an AI agent that interacts with social platforms, you probably need both.
Some real examples from our own usage:
- We have an AI agent that writes and schedules 5 tweets a day through PostPeer
- LinkedIn posts get auto-published with visibility controls and article link previews
- Scheduled posts go out across US time zones automatically
The dashboard
PostPeer has a dashboard where you manage everything visually.
Connect your accounts
Link Twitter, YouTube, Pinterest, LinkedIn, and more with one-click OAuth. No developer apps needed.
See every post
Every published and scheduled post shows up in the Posts tab. Filter by status, platform, or date.
Track your posting activity
The analytics tab shows where you're posting, how much, and when. Platform breakdown, daily volume, peak days.
What it supports
- 8+ platforms: Twitter, Instagram, LinkedIn, TikTok, YouTube, Shorts, Pinterest, Threads, Bluesky
- Scheduling with timezone support, delivered at the exact time you set
- Images, videos, GIFs, all validated against each platform's specs
- Twitter threads, polls, and Community posts
- LinkedIn visibility controls and article link previews
- TikTok privacy settings, Pinterest board targeting, YouTube tags and categories
- Unlimited connected accounts on every plan, including free
- Cross-platform posting in a single request
Pricing
PostPeer starts free with 20 posts. Paid plans start at $17/month for 2,000 posts. There are also one-time credit packs that never expire if you don't want a subscription.
It's the only social media posting API that offers BOTH subscription plans and one-time purchases. You can use them in combination too.
SocialKit users get 30% off for life with code SPECIAL30.
Try it out
Sign up takes 30 seconds. 20 free posts to test with, no credit card required.
If SocialKit helps you understand social media, PostPeer helps you show up on it.