Protect your application from abuse with intelligent rate limiting

Low latency, high throughput rate limiter optimised for simplicity and performance.

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Token Bucket Rate Limiter

import { RateLimiter } from "limit-api";
                
const limiter = new RateLimiter({
  apiKey: "your-api-key",
}, {
  type: "token-bucket",
  maxTokens: 3,
  refillRate: {
    tokens: 1,
    seconds: 3,
  },
});


// ...


const {
  rateLimited,
  remainingRequests,
} = await limiter.limit(apiKey);
3

Max tokens can be anywhere between 1 and 20

1

Refill amount can be anywhere between 1 and 10

3

Refill seconds can be anywhere between 1 and 10

Accepted Request
Rejected Request
Max Tokens: 3 | Refill Rate: 1 / 3s
Tokens Remaining: 3

Sliding Window Rate Limiter

import { RateLimiter } from "limit-api";
                
const limiter = new RateLimiter({
  apiKey: "your-api-key",
}, {
  type: "sliding-window",
  maxRequests: 3,
  windowSeconds: 6,
});


// ...


const {
  rateLimited,
  remainingRequests,
} = await limiter.limit(apiKey);
6

Window can be anywhere between 1 second and 200 days

3

Max requests can be anywhere between 1 and 1 trillion

Window Size: 6s | Max Requests: 3 | Requests Remaining: 3
Accepted Request
Rejected Request

Fixed Window Rate Limiter

import { RateLimiter } from "limit-api";
                
const limiter = new RateLimiter({
  apiKey: "your-api-key",
}, {
  type: "fixed-window",
  maxRequests: 3,
  window: {
    seconds: 6,
  },
});


// ...


const {
  rateLimited,
  remainingRequests,
} = await limiter.limit(apiKey);
6

Window can be anywhere between 1 second and 200 days

3

Max requests can be anywhere between 1 and 1 trillion

Window Size: 6s | Max Requests: 3 | Requests Remaining: 3
Accepted Request
Rejected Request

Pricing that scales with your business

$5.00

/ month

Rate limit API Calls
First 500KIncluded
Over 500K$1.00 / 100K
Over 10M$0.50 / 100K
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