Your AI apps, our billing back-end

Skip months developing boring stuff. PromptProxy handles your billing back-end and user crediting, so you can focus on shipping features.

No credit card required
5-minute setup
Works with any LLM

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 Your app here?
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Monetize your AI app instantly

Connect your payment provider and start charging for AI credits within minutes.

Credit Management

Users buy credits from you, we deduct them per LLM call.

Usage-Based Pricing

Set your price: per-token, per-request, or rate-limited.

Fraud Protection

Rate limiting and abuse detection protect your costs and revenue.

Works with your payment provider

stripe polar mollie

Connect your Stripe, Polar, or Mollie account. We sync payments, manage credits, and handle webhooks automatically. Zero billing code required.

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Secure authentication made simple

Use your existing auth provider. We handle user sessions, credit tracking, and access control.

Easy Auth Integration

Use your existing auth provider. We validate users and link their credits automatically.

Enterprise Security

JWT validation, per-user rate limiting, and session management built-in.

5-Minute Setup

Connect your auth provider, add one header, and you're live.

Works with your auth provider

firebase supabase auth0

Use Firebase, Supabase, or Auth0? Perfect. Add your JWT ID token to the X-PromptProxy-Key header, so we can link AI usage to the right user. No user management code required.

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Plug & Play Integration

Three lines of code. Zero backend complexity. Works with OpenAI, Anthropic, and OpenRouter. Use any AI SDK, such as Langchain or the OpenAI SDK.

1

Replace your API endpoint

Point your OpenAI, Anthropic, or OpenRouter calls to PromptProxy instead

2

Add user authentication

Include your user's JWT token in the X-PromptProxy-Key header

3

Configure providers

Connect your auth and payment providers in the dashboard

Saves hours of boring development

import OpenAI from "openai";
const client = new OpenAI({ 
 - apiKey: '<OPENAI_API_KEY>' 
 + apiKey: '<PROMPTPROXY_API_KEY>',
 + baseURL: 'https://api.prompt-proxy.com/v1',
 + defaultHeaders: {
 +   'X-PromptProxy-Key': <auth JWT ID token>
 + }
});
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Simple pricing

Pick the model that matches your needs. No hidden fees or surprises.

Starter

Perfect for early-stage projects.

$0 /month
  • 1,000 requests/month
  • 100 users per project
  • Email support
  • No credit card required
Start Free

Pro

For growing apps with serious AI usage.

$10 /month
  • 10,000 requests/user/month
  • 5,000 users
  • Priority support
Start Pro Trial

Max

For large-scale apps with advanced needs.

$48 /month
  • Unlimited requests
  • Unlimited users
  • 24/7 support
Contact Sales

What's included in every plan

Auth provider integration
Payment provider sync
Real-time credit tracking
Fraud protection
All major LLM providers
REST & SDK access
99.9% uptime SLA
Developer dashboard
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That's it. Seriously.

Three lines of code. Start charging users for AI in minutes.

No database changes, no new endpoints, no user management code. Your app instantly gains authentication, billing, credit management, and usage tracking. Route through PromptProxy and configure providers in our dashboard.

Get early access. No spam, unsubscribe anytime.