Skip to main content

​
Current Rate Limits

Rate limits protect against abuse and ensure system stability.
EndpointLimitIdentifierWindow
/api/v1/* (All API endpoints)1,000 requestsPer API keyPer hour
/api/health (Health check)60 requestsPer IP addressPer minute

​
How It Works

  • API Endpoints (/api/v1/*): Rate limited by API key after authentication
  • Health Check (/api/health): Rate limited by IP address before any processing
  • Algorithm: Sliding window (distributed evenly across the time period)

​
Rate Limit Headers

Every API response includes rate limit information in the headers: 
X-RateLimit-Limit: 100
X-RateLimit-Remaining: 95
X-RateLimit-Reset: 1640000000
HeaderDescription
X-RateLimit-LimitMaximum requests allowed in the window
X-RateLimit-RemainingRequests remaining in current window
X-RateLimit-ResetUnix timestamp when the limit resets

​
Rate Limit Exceeded Response

When you exceed the rate limit, you’ll receive a 429 status code: 
{
  "success": false,
  "data": null,
  "error": "Rate limit exceeded. Please try again later.",
  "limit": 1000,
  "remaining": 0,
  "reset": "2025-10-29T16:30:00.000Z"
}
The response also includes a Retry-After header with seconds until you can retry: 
Retry-After: 3600

​
Best Practices

​
1. Monitor Rate Limit Headers

JavaScript
const response = await fetch('https://lupitor.acrely.ai/api/v1/leads', {
  headers: { 'x-api-key': 'YOUR_API_KEY' }
});

const limit = response.headers.get('X-RateLimit-Limit');
const remaining = response.headers.get('X-RateLimit-Remaining');
const reset = response.headers.get('X-RateLimit-Reset');

console.log(`${remaining}/${limit} requests remaining`);

if (parseInt(remaining) < 10) {
  console.warn('Approaching rate limit!');
}

​
2. Implement Exponential Backoff

Python
import time
import requests

def make_request_with_backoff(url, headers, data, max_retries=5):
    for attempt in range(max_retries):
        response = requests.post(url, headers=headers, json=data)

        if response.status_code != 429:
            return response

        # Calculate wait time: 2^attempt seconds
        wait_time = 2 ** attempt
        print(f"Rate limited. Waiting {wait_time} seconds...")
        time.sleep(wait_time)

    raise Exception("Max retries exceeded")

​
3. Respect Rate Limit Reset Time

Python
import time

def wait_for_rate_limit_reset(response):
    """Wait until rate limit resets based on header"""
    if response.status_code == 429:
        reset_time = int(response.headers.get('X-RateLimit-Reset', 0))
        current_time = int(time.time())

        if reset_time > current_time:
            wait_seconds = reset_time - current_time + 1
            print(f"Rate limit exceeded. Waiting {wait_seconds}s...")
            time.sleep(wait_seconds)
            return True

    return False

​
4. Batch Requests Efficiently

Instead of making 1000 individual requests, use bulk endpoints: 
// ❌ This will hit rate limits quickly
for (const lead of leads) {
  await fetch('https://lupitor.acrely.ai/api/v1/leads', {
    method: 'POST',
    headers: { 'x-api-key': 'YOUR_API_KEY' },
    body: JSON.stringify(lead)
  });
}

​
5. Distribute Load Over Time

Python
import time

def distribute_requests(items, requests_per_minute=100):
    """Spread requests evenly to avoid bursts"""
    delay = 60 / requests_per_minute  # seconds between requests

    for item in items:
        make_request(item)
        time.sleep(delay)  # 0.6 seconds for 100/min

​
Advanced Rate Limiting Strategies

​
Request Queue with Rate Limiting

JavaScript
class RateLimitedQueue {
  constructor(requestsPerMinute = 100) {
    this.queue = [];
    this.processing = false;
    this.requestsPerMinute = requestsPerMinute;
    this.delay = 60000 / requestsPerMinute; // ms between requests
  }

  async add(requestFn) {
    return new Promise((resolve, reject) => {
      this.queue.push({ requestFn, resolve, reject });
      this.process();
    });
  }

  async process() {
    if (this.processing || this.queue.length === 0) return;

    this.processing = true;

    while (this.queue.length > 0) {
      const { requestFn, resolve, reject } = this.queue.shift();

      try {
        const result = await requestFn();
        resolve(result);
      } catch (error) {
        if (error.status === 429) {
          // Re-queue on rate limit
          this.queue.unshift({ requestFn, resolve, reject });
          await new Promise(r => setTimeout(r, 60000)); // Wait 1 minute
          continue;
        }
        reject(error);
      }

      // Wait before next request
      if (this.queue.length > 0) {
        await new Promise(r => setTimeout(r, this.delay));
      }
    }

    this.processing = false;
  }
}

// Usage
const queue = new RateLimitedQueue(100);

for (const lead of leads) {
  queue.add(() => createLead(lead));
}

​
Need Higher Limits?

If your use case requires higher rate limits:
1

Assess Your Needs

Document your expected request volume and use case
2

Contact Us

Email info@acrely.ai with your requirements
3

Review Options

We’ll work with you to find the right limits for your needs
4

Upgrade

Higher limits may be available on enterprise plans

​
Common Scenarios

​
High-Volume Lead Import

If importing thousands of leads:
  1. Use bulk endpoint (POST /leads/bulk) - 1000 leads per request
  2. Batch your imports - 10 bulk requests per minute = 10,000 leads/min
  3. Run during off-hours if possible
  4. Monitor progress and handle errors gracefully

​
Real-Time Integrations

For webhook-triggered lead creation:
  1. Queue incoming webhooks instead of immediate API calls
  2. Process queue at controlled rate (90-95 requests/min)
  3. Leave headroom for retries and other operations
  4. Implement circuit breakers for cascading failures

​
Analytics Dashboards

For dashboards that query the API:
  1. Cache responses for at least 1 minute
  2. Aggregate data on the backend
  3. Use webhooks for real-time updates instead of polling
  4. Implement request debouncing for user interactions

​
Monitoring Rate Limits

Track your usage to avoid surprises:
Python
class RateLimitMonitor:
    def __init__(self):
        self.requests = []

    def log_request(self, response):
        self.requests.append({
            'timestamp': time.time(),
            'remaining': int(response.headers.get('X-RateLimit-Remaining', 0)),
            'limit': int(response.headers.get('X-RateLimit-Limit', 100))
        })

        # Keep only last hour
        cutoff = time.time() - 3600
        self.requests = [r for r in self.requests if r['timestamp'] > cutoff]

    def get_usage_stats(self):
        if not self.requests:
            return None

        recent = [r for r in self.requests if r['timestamp'] > time.time() - 60]
        return {
            'requests_last_minute': len(recent),
            'current_remaining': self.requests[-1]['remaining'],
            'current_limit': self.requests[-1]['limit']
        }