Complete REST API Documentation

Build with
FastSaaS API

Powerful RESTful API to integrate FastSaaS into your applications. Manage users, subscriptions, and more.

Fast & Reliable

99.99% uptime SLA with sub-100ms response times globally

Secure by Default

API key authentication, rate limiting, and encrypted connections

RESTful Design

Clean, predictable API following REST best practices

Usage Analytics

Real-time monitoring and detailed usage statistics

Getting Started with FastSaaS API

Authentication

All API requests require authentication using an API key. Include your API key in the X-API-Key header:

X-API-Key: your_api_key_here

Generate your API key →

Base URL

https://api.fastsaas.cloud/v1

Available Endpoints

GET/users

List all users

POST/users

Create a new user

GET/users/{id}

Get user details

PATCH/users/{id}

Update user

GET/products

List products

GET/subscriptions

List subscriptions

POST/subscriptions

Create subscription

GET/usage

Get API usage stats

Rate Limits

  • SaaSForge ($199): 100,000 requests/month
  • AIForge ($449): 500,000 requests/month
  • FullForge ($749): Unlimited requests

Response Format

All responses are returned in JSON format:

{
  "data": { ... },
  "pagination": {
    "page": 1,
    "limit": 10,
    "total": 100,
    "pages": 10
  }
}

Error Codes

400Bad Request - Invalid parameters
401Unauthorized - Invalid or missing API key
403Forbidden - Insufficient permissions
404Not Found - Resource does not exist
429Too Many Requests - Rate limit exceeded
500Internal Server Error - Something went wrong
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