RelayAPI

Instagram API

Posting to Instagram via RelayAPI — features, limits, and platform-specific settings.

Overview

RelayAPI supports publishing to Instagram through the unified API. Connect your Instagram account and start posting programmatically.

Getting Started

  1. Connect your Instagram account via the dashboard or Connect Account API
  2. Use the account ID as a target when creating posts
curl -X POST https://api.relayapi.dev/v1/posts \
  -H "Authorization: Bearer rlay_live_your_api_key" \
  -H "Content-Type: application/json" \
  -d '{
    "content": "Hello from RelayAPI!",
    "targets": ["acc_instagram_123"]
  }'

Content Limits

PropertyLimit
Character limit2200
Supported mediaImages (10), Video (1), Reels, Stories
Media size limits8 MB images, 100 MB video

Platform-Specific Settings

Use platform_overrides to customize content for Instagram:

{
  "content": "Default content for all platforms",
  "platform_overrides": {
    "instagram": {
      "content": "Custom content for Instagram"
    }
  }
}

Rate Limits

Instagram enforces its own rate limits. RelayAPI automatically queues and retries posts when platform rate limits are reached. See Rate Limits for details.

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