Everything you need to build APIs

Powerful features for modern developers

Build, test, and iterate faster with a comprehensive suite of tools designed for API development

🎨Model Builder

Visual Model Builder

Create complex data models without writing a single line of code. Our intuitive drag-and-drop interface makes it easy to define fields, set validation rules, and manage your data structure.

  • 11+ field types including strings, numbers, dates, emails, UUIDs, and more
  • Drag-and-drop field reordering for perfect model organization
  • Inline field editing with real-time validation
  • Advanced validation rules (min/max, regex patterns, custom messages)
  • Model categories and tags for easy organization

User Model

6 fields
id
UUID • Required
⋮⋮
email
Email • Required
⋮⋮
name
String • Required
⋮⋮

Relationship Diagram

User
has many
Post
Post
has many
Comment
🔗Relationships

Smart Relationships

Define complex relationships between your models with our visual relationship manager. See your entire data structure at a glance with interactive UML diagrams.

  • One-to-one, one-to-many, and many-to-many relationships
  • Interactive UML diagrams with hierarchical layout
  • Cascade delete options (cascade, set null, restrict)
  • Nested relationships up to tier-based depth limits
  • Visual connection indicators with colored edges
apiblderation

Instant REST APIs

Generate fully functional REST APIs in seconds. Complete with GET, POST, PUT, DELETE endpoints, pagination, and filtering capabilities.

  • Full CRUD operations for all your models
  • Automatic pagination with configurable limits
  • Customizable endpoint names and paths
  • Enable/disable specific endpoints per model
  • CORS configuration with allowed origins
api.apibld.com/mock/my-api
GET /users
GET /users?id=xxx
POST /users
PUT /users?id=xxx
DELETE /users?id=xxx
─────────────────────
GET /posts
GET /posts?id=xxx
POST /posts
PUT /posts?id=xxx
DELETE /posts?id=xxx
// Generated User Data
{
"id": "a3b2c1d4-5678-90ef",
"email": "john.doe@example.com",
"name": "John Doe",
"age": 32,
"isVerified": true,
"createdAt": "2024-03-15T10:30:00Z"
}
🎲Mock Data

Realistic Mock Data

Generate realistic, production-quality mock data with Faker.js. Perfect for testing, demos, and development without touching production data.

  • Realistic data for emails, names, addresses, phone numbers, and more
  • Consistent mode for reproducible data across requests
  • Random mode for unique data every time
  • Persistent mode to save and modify data (Pro+)
  • Automatic relationship data with foreign keys
📚Documentation

Auto-Generated OpenAPI Docs

Every API comes with complete OpenAPI 3.0 documentation. Test endpoints directly in your browser with our interactive Swagger UI.

📖

Interactive Docs

Swagger-like UI with "Try it out" feature. Test your endpoints without leaving the browser.

📋

Code Examples

Copy cURL commands and request examples for quick integration into your projects.

⬇️

Export Specs

Download OpenAPI specifications in JSON format for use with other tools.

📊Analytics

Comprehensive Analytics

Monitor your API usage with detailed analytics. Track calls, response times, error rates, and more to understand how your APIs are being used.

  • Real-time API call tracking and metrics
  • Response time analytics (avg, p50, p95, p99)
  • Error rate monitoring by endpoint
  • Historical data with time-series charts
  • Export analytics to CSV for custom analysis

API Analytics Dashboard

1,247
Total Calls
145ms
Avg Response
98.5%
Success Rate
324
Today
📦Templates

Pre-Built Template Library

Get started instantly with 8+ production-ready templates for common use cases. Import complete data models with relationships in one click.

🛒

E-Commerce

Products, customers, orders, categories

5 models • 8 relationships
📱

Social Media

Users, posts, comments, likes, follows

5 models • 7 relationships
✍️

Blog Platform

Authors, posts, tags, comments

5 models • 6 relationships
🎓

E-Learning

Courses, lessons, quizzes, students

13 models • 20+ relationships

Ready to experience these features?

Start your free 14-day trial and see how apibld can accelerate your development workflow.

View Pricing