OpenAPI Generator That Turns a Spec Into a Running API

Upload an OpenAPI 3.x file and get a running API with validation, docs, contract tests, a mock server and MCP tools. No spec yet? APIGenerator writes one from your description or schema.

Source

Output

Ready in about 30 s

Or start from

Your files are parsed in your browser and never uploaded.
Code export on every plan. You own what you generate.

Your generated API

https://clinic.apigenerator.ai

Request

Response

Create your account to see every resource, run the tests, export the code and deploy this API.

Spec first or schema first

Spec to API: your OpenAPI file becomes endpoints with handlers, validation and tests, hosted or exported.
Source to spec: a description, SQL schema or sheet becomes an OpenAPI 3.1 document you can review and keep.

CREATE TABLE orders (
  id          uuid PRIMARY KEY,
  customer_id uuid REFERENCES customers,
  status      text NOT NULL,
  total       numeric(10,2),
  placed_at   timestamptz
);

GET/v1/orders

GET/v1/customers/{id}/orders

What the OpenAPI generator produces

Endpoints that follow the paths, parameters and schemas of the spec.
Request and response validation that matches the document exactly.
Interactive docs with curl, JavaScript and Python examples. See the API documentation generator.
Contract tests that fail when the implementation leaves the spec.
A mock server for frontend teams.
MCP tools derived from the operations. See custom mcp server.
Code export in Node.js TypeScript, Python FastAPI or PHP Laravel.

Supported formats

OpenAPI 3.0 and 3.1 in JSON or YAML, with components, references and security schemes. GraphQL SDL is supported on the graphql api page.

Questions about openapi generator

APIGenerator reads OpenAPI 3.0 and 3.1. Convert a Swagger 2.0 file to OpenAPI 3 first, then upload it.

Every API includes request examples in curl, JavaScript and Python in the docs, and the OpenAPI 3.1 document works with common client generators.

Yes. Upload a new version and APIGenerator updates the endpoints, tests, docs and MCP tools together.

Turn your spec into a running API

Upload an OpenAPI file and see the endpoints in seconds.