> ## Documentation Index
> Fetch the complete documentation index at: https://v0.x-docs.novu.co/llms.txt
> Use this file to discover all available pages before exploring further.

# API Rate Limiting

> In this page you can learn about how rate limiting works with Novu's API

<Note>
  This feature is available from v0.22.0.
</Note>

Rate limiting is an essential functionality for establishing a robust and resilient system. It safeguards system resources from being misused by malicious actors or being monopolized by one client.

A variable-cost token bucket rate limited algorithm has been added to provide the capability for different API controllers and methods to have a varying cost. It also lays a foundation for dynamic costing of resource consumption.

## Limits

The following limits apply to each category of the Novu system. Each category has an independent bucket of rate-limit tokens to consume.
Bulk requests have a rate limit cost of 100 times the base limit and consume from the same token pool. For example, the free tier would allow a combined maximum of 10 standard trigger events and 2 bulk trigger events in the same 1-second window.

| Category      | Free   | Business | Endpoints                                                            |
| ------------- | ------ | -------- | -------------------------------------------------------------------- |
| Events        | 60 rps | 600 rps  | Trigger                                                              |
| Configuration | 15 rps | 150 rps  | Subscribers, Topics, Tenants                                         |
| Global        | 30 rps | 300 rps  | All other endpoints consume rate limiting tokens from this category. |