Instagram Posting API
Add Instagram publishing to your product or workflow through one API without building the Graph API integration from scratch.
- Feed posts, Stories, Reels, and carousels
- Image and video publishing through one API
- Instagram Login with no linked Facebook Page required
- Publish now, schedule for later, or cross-post to other platforms
{ "platforms": ["twitter", "linkedin"], "content": "Hello world!" }
"I was up and running on six different platforms in under 30 minutes. Strongly recommend!"
David Flor, Founder at Darklight Interactive
"Couldn't figure out the official Pinterest API. PostPeer was smooth. Using it daily."
Divanshu Khatter, Marketing Manager at Sembark
"Great integration experience. Jonathan ships fixes within hours. Mad respect for the speed."
Het Tikawala, Founder at Kalizzle AI Studio
Add Social Media to Your Product in Three Steps
Connect once, then publish, schedule, and read data through the same API.
01
Get Your API Key
Sign up and get your API key instantly. No sales calls or complicated setup.
02
Integrate in Minutes
Connect once to PostPeer to publish, schedule, analyze, manage comments, and handle messages.
03
Support Every Major Platform
Give your users access to major social platforms without building and maintaining each integration yourself.
New to PostPeer? Read the getting started guide
Explore Requests and Responses by Format
Use the same endpoint and change only the fields required for each publishing format.
{
"content": "New product launch! #startup #launch",
"platforms": [
{
"platform": "instagram",
"accountId": "ig_456"
}
],
"mediaItems": [
{
"type": "image",
"url": "https://cdn.example.com/photo.jpg"
}
],
"publishNow": true
}{
"success": true,
"status": "published",
"postId": "post_def456",
"platforms": [
{
"platform": "instagram",
"success": true,
"platformPostUrl": "https://www.instagram.com/p/ABC123/"
}
]
}POST https://api.postpeer.dev/v1/posts
Everything You Need for Instagram Posting
Skip the Instagram Graph API complexity. PostPeer gives you a simple, unified endpoint for Instagram publishing.
Feed Posts
Publish single-image feed posts with captions and hashtags.
Reels
Upload and publish Instagram Reels with captions. PostPeer handles the asynchronous Instagram media publishing flow.
Carousels
Create carousel posts with up to 10 images or videos. Pass multiple mediaItems and PostPeer handles the publishing workflow.
Media Requirements
Publish images and videos that meet Instagram's documented format, aspect-ratio, duration, and file-size requirements.
Scheduled Publishing
Schedule Instagram posts for a future date and time using the same posting endpoint.
Cross-Post to Other Platforms
Publish the same content to Instagram, Twitter/X, TikTok, and other supported platforms in one request.
Need More Than Publishing?
Use the same connected Instagram account to add scheduling, analytics, comment management, and messaging to your product.
Instagram Scheduling
Schedule content for later and manage upcoming Instagram posts without building a separate publishing workflow.
Explore Instagram SchedulingInstagram Analytics
Retrieve Instagram performance data for dashboards, reporting, and automated workflows.
Explore Instagram AnalyticsInstagram Comments
Read comments and replies, respond to users, and manage comments on connected Instagram accounts.
Explore Instagram CommentsInstagram Messaging
Bring Instagram conversations into your product and build workflows around reading and replying to DMs.
Explore Instagram MessagingShip Instagram Posting in Any Stack
Whether your product is a Node app, a no-code workflow, or an AI agent, the same PostPeer API can power the publishing workflow.
Dev Stack
Typed SDKs and predictable REST APIs let you integrate PostPeer into the stack your application already uses.
- Node.js SDK
- Python SDK
- REST + cURL
- TypeScript-first types
AI Agents & MCP
Give Claude, Cursor, Codex, or your own AI agent the ability to publish, schedule, and interact with social workflows through PostPeer.
Connect via MCPBeyond Instagram: Every Supported Platform
Start with Instagram, then reach every other network through the same API.
Twitter / X API
Publish to Twitter / X via one API.
Instagram API
Publish to Instagram via one API.
YouTube API
Publish to YouTube via one API.
Facebook API
Publish to Facebook via one API.
TikTok API
Publish to TikTok via one API.
Threads API
Publish to Threads via one API.
Pinterest API
Publish to Pinterest via one API.
LinkedIn API
Publish to LinkedIn via one API.
Bluesky API
Publish to Bluesky via one API.
Google Business API
Publish to Google Business via one API.
Add More Social Capabilities
Use the same connected accounts to schedule, analyze, manage comments, and handle conversations.
Frequently Asked Questions
Power Your Next Project With a Unified Social Media API
Give your users posting, scheduling, analytics, and engagement features through one API your team can maintain.
Start with 20 free credits. No credit card required.