Rate Limits

PostBoost API rate limits are generous and scale with your plan. All plans include unlimited API calls — there are no per-request fees.

Current limits

Plan	API calls	Notes
Developer	Unlimited	Fair use policy applies
Business	Unlimited	Fair use policy applies
Agency	Unlimited	Fair use policy applies

For high-volume automation (thousands of requests per minute), contact us to confirm your use case has sufficient headroom.

Platform-level limits

Note that individual social platforms impose their own publishing rate limits (e.g., Instagram limits posts per account per day). PostBoost respects these limits and will return an error if a platform-level limit is reached. These are separate from PostBoost API rate limits.

Best practices

• Use the queue — "queue": true lets PostBoost distribute posts at optimal times, naturally staying within platform limits.
• Batch media uploads — upload media assets before creating posts to avoid waterfall requests.
• Webhook-driven workflows — avoid polling post status; subscribe to webhooks instead.

Error response

If a rate limit is ever exceeded, PostBoost returns:

{
  "message": "Too Many Requests."
}

with HTTP status 429. Back off and retry after the Retry-After header interval.