Common signs: brute-force logins, scraping, SMS or AI cost spikes and overloaded APIs. Usual causes: no request limits. What we do: design and implement rate limits per user, IP and API key. What you get: protected endpoints and clear 429 responses.
Our API rate limiting setup caps how often anyone can hit your login, sign-up, OTP, search and API endpoints, so scripts can't brute-force accounts, scrape your data or run up your SMS and AI bills. A Codersarts engineer designs limits per endpoint, implements them in your code, gateway or edge, and tests that real users aren't affected. Fixed price from $199 with 1-day delivery.
API Rate Limiting at a Glance
Item | Details |
|---|---|
Starting price | $199 for one app or API |
Delivery | 1 day |
Where | In your code with Redis, in Nginx or an API gateway, or at the edge with Cloudflare |
Limits by | IP address, user account, API key and endpoint |
Responses | HTTP 429 with Retry-After and rate-limit headers |
What you get | Protected endpoints and tested limits |
Revisions | One revision round included |
What Is API Rate Limiting?
Rate limiting restricts how many requests a user, IP address or API key can make in a period of time, such as 5 login attempts per minute or 100 API calls per minute. When a client goes over the limit, the server replies with HTTP 429 Too Many Requests until the window resets.
Signs You Need Rate Limiting
Failed login attempts spike from a few IPs
Bots create fake accounts or trigger thousands of OTP messages
Your data or prices are being scraped
SMS, email or AI API bills jump without more real users
One client's traffic slows the API for everyone else
Why Endpoints Get Abused
No limits at all
Every endpoint accepts unlimited requests.
Limits only in one place
Counters stored per server, so limits don't add up across servers.
Limits only by IP
Attackers rotate IPs, while offices and campuses share one.
Costly actions are free
OTP, email and AI calls cost money but have no cap.
Quick Checks You Can Try First
List the endpoints that cost you money per call, such as OTP, email and AI.
Check your logs for IPs or users with unusually high request counts.
Turn on your framework's built-in rate limiter for login.
If you use Cloudflare, add a basic rate limit rule on login.
If the problem remains, our engineers take it from there.
How We Add Rate Limiting
Review traffic. We find abused endpoints and normal usage levels.
Design limits. We set limits per endpoint, user, IP and API key.
Implement. We add limits in code with Redis, in your gateway, or at the edge.
Respond clearly. We return 429 responses with Retry-After headers.
Test. We confirm limits trigger for abuse and not for real users.
Monitor. We add alerts for spikes in blocked requests.
What You Get
A rate-limit plan per endpoint
Limits implemented and tested
Clear 429 responses and rate-limit headers
Protection on login, sign-up, OTP and costly endpoints
Alerts for abuse spikes
Example result (illustrative)
A SaaS app's OTP endpoint was abused to send thousands of SMS messages overnight. We added limits per phone number, per IP and per account, plus a challenge on repeated requests. SMS costs returned to normal and real users saw no change.
What Is Included and Not Included
Included | Not included |
|---|---|
Limits for one app or API | Several unrelated apps |
Redis, gateway or edge implementation | Full WAF and bot management (separate task) |
429 handling and headers | Usage-based billing systems |
Testing and alerts | Ongoing tuning (available with prepaid hours) |
Pricing for API Rate Limiting
Package | Best for | Starting at | Delivery |
|---|---|---|---|
Rate limit plan | Which endpoints need which limits | $29 | 24 hours |
Rate limiting setup | Limits on key endpoints, tested | $199 | 1 day |
API tiers and quotas | Plan-based quotas for public APIs | $599 | 3 days |
You get a fixed quote after we review your setup. You approve the scope before any payment.
Who This Is For
Apps with public sign-up, OTP or free trials
Public and partner APIs
Teams seeing scraping or brute-force attempts
Products with AI features that cost per call
What We Need From You
Repository or gateway access
A list of sensitive and costly endpoints
Whether you use Redis, an API gateway or Cloudflare
Normal usage numbers, if you have them
Code and data privacy
We sign an NDA on request, work with the least access needed, and never keep copies of your data after delivery. You own all code, configuration and notes.
Key Terms Explained
Rate limit: a cap on requests per period
HTTP 429: the Too Many Requests response
Retry-After: a header telling the client when to try again
Token bucket: an algorithm that allows short bursts but caps the average rate
Common Mistakes We Avoid
Storing counters in server memory when you run several servers
Limiting only by IP
Using one limit for every endpoint
Blocking without telling clients why
Need More Than One Task?
Need full bot protection and abuse prevention? See Rate Limiting & Bot Protection. Or use Prepaid Developer Hours to cover several tasks from one prepaid balance.
Related Tasks
Redis Caching Setup which can share the same Redis
Load Test Your App to confirm limits under load
Load Balancer Setup for apps on several servers
Frequently Asked Questions
What is a good rate limit for login?
Often 5 to 10 attempts per account per 15 minutes, plus a per-IP limit. We set limits from your real usage.
Where should rate limiting live?
Edge limits stop floods cheaply; app limits handle user-specific rules. Most apps use both.
Will rate limiting block real users?
Not if limits are based on real usage and tested. We check that before turning them on.
What does HTTP 429 mean?
Too Many Requests: the client went over the limit and should retry later.
Protect Your Endpoints Before Someone Finds Them
Share your API and sensitive endpoints, and a Codersarts engineer will add limits that stop abuse and keep real users happy.