No-code REST API builder
Create a REST API without writing backend code
Build and publish REST endpoints visually with authentication, validation, rate limits, logs, webhooks, and OpenAPI docs in NexApi.
What this workflow solves
Go from idea to a stable HTTP contract without building every backend layer first.
NexApi gives you a visual way to define resources, endpoints, request schemas, response mappings, and access rules. You keep the REST model developers expect while avoiding repetitive controller, validation, auth, logging, and documentation boilerplate.
Define GET, POST, PUT, PATCH, and DELETE endpoints visually.
Protect endpoints with API keys, rate limits, and request validation.
Inspect request logs and analytics without wiring a separate observability stack.
Expose OpenAPI documentation from the same API configuration.
How it works
A short path from data model to usable endpoint.
Create an API
Start a project, name the API, and define the resources your application needs.
Design the endpoints
Choose methods and paths, then configure auth, schemas, cache behavior, and rate limits.
Map the response
Shape the JSON your frontend receives without hand-writing controller code.
Publish and inspect
Call the generated runtime URL, then use logs and analytics to see how clients use it.
GET /r/store/products?limit=20
x-api-key: nxa_demo_••••••{
"data": [
{ "id": 1, "name": "Cap", "price": 24.95 },
{ "id": 2, "name": "Hoodie", "price": 69.95 }
],
"count": 2
}A simple products endpoint
A client can call a normal REST endpoint while NexApi handles the endpoint configuration behind it.
Built into NexApi
The API operations layer is already there.
Start small, then add the controls normally scattered across backend code, gateway config, webhook workers, and observability tools.
Visual endpoint builder
Configure methods, paths, request schemas, and response mappings from one interface.
API keys and access
Add API-key based access rules and keep public endpoints under control.
Rate limits and caching
Apply endpoint-level runtime controls without rebuilding the surrounding backend.
Webhooks and connectors
Connect REST APIs with Google Sheets, Slack, Discord, webhooks, Postgres, MySQL, and external REST APIs.
OpenAPI output
Keep the API contract consumable by documentation and developer tooling.
Logs and analytics
Inspect requests and usage from the same dashboard used to configure the API.
Good fit for
Teams that want to ship the API contract first.
Frequently asked
Do I need to know backend programming?
You do not need to write the usual backend boilerplate to define an API in NexApi. Basic knowledge of REST concepts such as methods, paths, fields, and JSON still helps.
Can I use the API from React, Next.js, mobile apps, or scripts?
Yes. Published NexApi endpoints are regular HTTP endpoints, so any client that can make HTTP requests can call them.
Does NexApi generate OpenAPI documentation?
NexApi includes OpenAPI output for configured APIs, so the contract can be consumed by documentation and tooling.
Build it in NexApi
Turn this use case into a working endpoint.
Start with the contract you need now, then add keys, connectors, webhooks, analytics, and OpenAPI as the project grows.