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Lago enforces rate limits on the REST API per organization to protect platform stability. Default limits are shown below, and they can be raised to match your needs. Contact the Lago team if you need higher throughput.
Endpoint categoryDefault limit
Event ingestion (POST /events)500 requests/sec
Current usage200 requests/sec
All other endpoints50 requests/sec
Rate limits apply per organization, so all of your API keys share the same budget.

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When you are rate limited

You receive a 429 Too Many Requests response. Every response includes headers to help you manage your rate:
  • X-RateLimit-Limit: maximum requests for the current window
  • X-RateLimit-Remaining: requests left in the current window
  • X-RateLimit-Reset: seconds until the window resets
Retrying after a 429 is safe. Event ingestion is deduplicated by transaction_id, so a replayed event is never billed twice. Back off until X-RateLimit-Reset reaches zero before retrying.
Kafka, Kinesis, and S3 connectors are not subject to REST API rate limits. Their throughput is bounded by your broker or infrastructure capacity.