RelayAPI

Threads API

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

Overview

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

Getting Started

  1. Connect your Threads 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_threads_123"]
  }'

Content Limits

PropertyLimit
Character limit500
Supported mediaImages (10), Video (1)
Media size limits8 MB images, 100 MB video

Platform-Specific Settings

Use platform_overrides to customize content for Threads:

{
  "content": "Default content for all platforms",
  "platform_overrides": {
    "threads": {
      "content": "Custom content for Threads"
    }
  }
}

Rate Limits

Threads 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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