---
title: "Rate Limiter: Advanced API Protection"
description: "Intelligent rate limiting that filters API traffic in real time, stopping brute-force logins, denial-of-service attempts, and endpoint abuse before they reach you."
canonical_url: https://optimi.com/en/security/rate-limiter
md_url: https://optimi.com/en/security/rate-limiter.md
last_updated: 2026-09-04
---

# Rate Limiter

Intelligent and secure: protection against brute-force logins and denial-of-service attacks, with fine-grained control over every API endpoint.

**APIs** can put your services and your business at risk, and the danger is easy to
underestimate. Developers focus on innovation and optimisation, not security, and
without realising it they leave **vulnerabilities** for attackers to exploit. The
**Rate Limiter** sits in front of your endpoints and shuts that door.

*Request rates are evaluated at the edge, abusive callers are throttled before they reach your API.*

- Legitimate calls (Within limits)
- Abusive traffic (Brute force, floods)
- Optimi Rate Limiter
- Calls served (Endpoints stay healthy)
- Abuse throttled (Attacks intercepted)

## Smart, automatic and dynamic

- **Vulnerabilities** — Attacks targeting APIs and their unique vulnerabilities grow daily and keep getting more complex. Our rate limiter automatically detects and intercepts malicious behaviour.
- **Traffic Filter** — It judges the legitimacy of each API call and eliminates attacks before they reach your digital properties, working with both authenticated and unauthenticated calls.
- **Fine Tuning** — Define responses, set thresholds, and reinforce security based on request rates. You get tighter control over HTTP and HTTPS traffic, tuned to your requirements.

> **Protect endpoints, control costs**
>
> Filtering abusive traffic before it reaches your origin keeps API infrastructure
>   healthy and stops wasted compute on requests that should never have been served.

## Main features

- **Real-time traffic analysis** — Live evaluation of request rates per endpoint.
- **In-depth reporting** — Detailed analytics on usage and abuse patterns.
- **Brute-force protection** — Stop credential-stuffing and login attacks cold.
- **Cost savings** — Less wasted compute on traffic that gets blocked.
- **API protection** — Coverage for authenticated and unauthenticated calls.
- **Easy management** — Simple thresholds and responses, fast to adjust.

## Related guides
- [api-security](/en/guides/tags/api-security)

[Get in touch](/en/contact): Need to filter your API traffic? — Talk to our team about rate limiting that stops abuse before it reaches your endpoints.