Developer Tools Medium 2,400/mo

API Rate Limiting Service

Drop-in rate limiting and throttling for any API with usage analytics. Protect your API from abuse, enforce fair usage, and monetize with usage-based pricing.

APIInfrastructure
MRR Potential
$10K–$40K
Time to MVP
8–10 weeks
Search Volume
2,400/mo
Market Size
$2.4B

The Problem

Rate limiting is complex — sliding windows, token buckets, distributed counting. Every API team builds it from scratch. Distributed rate limiting across regions is even harder. Usage-based billing requires metering infrastructure. API abuse detection needs sophisticated algorithms. Redis-based solutions don't scale across regions.

The Solution

Managed rate limiting service as a reverse proxy or SDK — add rate limiting, usage metering, and abuse detection to any API in minutes without building distributed counting infrastructure.

Target Audience

API-first companies needing rate limiting infrastructure, SaaS platforms implementing usage-based pricing, and DevOps teams protecting APIs from abuse

Key Features

1
Multiple rate limiting algorithms: fixed window, sliding window, token bucket
2
Distributed rate limiting consistent across multi-region deployments
3
Usage metering for per-customer API call tracking and billing
4
Abuse detection identifying DDoS patterns, credential stuffing, and scraping
5
Developer portal with per-customer usage dashboards and key management
6
SDK and proxy modes for flexible integration

Market Opportunity

Market Size
$2.4B — API management and gateway growing at 22.5% CAGR
Monthly Searches
2,400/mo
MRR Potential
$10K–$40K
Why Now?

API-first companies are the norm. Usage-based pricing requires metering. API abuse is increasing. Distributed systems need distributed rate limiting. Building infrastructure in-house is waste.

Revenue Model

Free: 10K requests/mo. Pro: $29/mo (1M requests). Team: $99/mo (10M requests + abuse detection). Enterprise: $299/mo (100M requests + SLA). Per-request overage: $0.00001.

Competitive Landscape

Kong Gateway

API gateway. Open source – $100K+/yr, full gateway not just rate limiting

Cloudflare Rate Limiting

$0.05/10K requests, basic, Cloudflare ecosystem only

Unkey

API key management. Free–$25/mo, key management + rate limiting, newer

Custom Redis implementation

Works for simple cases, breaks at scale, no multi-region, no metering

Recommended Tech Stack

Next.jsGo/RustPostgreSQLRedis ClusterEdge workersStripePrometheus

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