AI Ratelimit Limiter

Per-tenant AI rate limiting for Node.js.

``bash
npm install @ai-ratelimit/limiter
`

The Problem

You have one OpenAI API key. You have many customers. One bad actor burns through your budget.

The Solution

`typescript
import { protect } from '@ai-ratelimit/limiter';

app.use('/api/ai', protect({
tenant: (req) => req.user.id,
limit: '100/day'
}));
`

That's it. Your AI endpoints are now protected from abuse.

Options

`typescript
protect({
// Required: identify the tenant
tenant: (req) => req.user.id,

// Optional: rate limit (default: "100/day")
limit: '1000/day', // or '60/minute', '500/hour', '10000/month'

// Optional: monthly token quota
tokens: 100000, // 100k tokens/month
})
`

Need More Control?

For multi-plan support, Redis storage, or custom hooks, use the full API:

`typescript
import { createLimiter, RedisStorage } from '@ai-ratelimit/limiter';
import Redis from 'ioredis';

const limiter = createLimiter({
storage: new RedisStorage(new Redis()),
plans: {
free: { rateLimit: { capacity: 20, refillRate: 1 }, quota: { maxTokens: 100_000 } },
pro: { rateLimit: { capacity: 100, refillRate: 5 }, quota: { maxTokens: 2_000_000 } },
},
getPlan: (tenantId) => db.getTenant(tenantId).plan,
});

app.use('/api/ai', limiter.middleware({ getTenantId: (req) => req.user.orgId }));
`

Storage Backends

`typescript
import { MemoryStorage, RedisStorage, PostgresStorage } from '@ai-ratelimit/limiter';

new MemoryStorage() // Default, no deps, dev/single-server
new RedisStorage(redis) // Production, multi-server (npm i ioredis)
new PostgresStorage(pool) // When you have Postgres (npm i pg)
``

Need a Dashboard?

When you need usage analytics, plan management, and billing, check out airatelimit.com.

License

FSL-1.1-MIT