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@zenclabs/api v0.1.22


A TypeScript-based DSL to generate API contracts (OpenAPI, Swagger, JSON Schema, API Blueprint), client SDKs (TypeScript, Swift, Kotlin) or even server boilerplate (e.g. Express).

Example of an API definition file api.ts which defines a single POST endpoint to create a user:

import { api, endpoint, request } from "@zenclabs/api";

class Api {
    method: "POST",
    path: "/users"
  createUser(@request req: CreateUserRequest): CreateUserResponse {
    throw "contract";

interface CreateUserRequest {
  firstName: string;
  lastName: string;

interface CreateUserResponse {
  success: boolean;

You can pass the definition above to a generator by simply running:

npx @zenclabs/api generate --api api.ts

This is work in progress as of 3 Nov 2018:

  • [x] Functional TypeScript DSL
  • [x] Support for multiple files (using import statements)
  • [x] OpenAPI 3 generator
  • [x] OpenAPI 2 generator
  • [x] JSON Schema generator
  • [ ] API Blueprint generator
  • [x] TypeScript axios-based client generator
  • [x] TypeScript express-based server boilerplate generator
  • [ ] Swift client generator
  • [ ] Kotlin client generator

oclif Version CircleCI Downloads/week License

* [Usage](#usage) * [Commands](#commands) # Usage

To get started and set up an API declaration in the current directory, run:

npx @zenclabs/api init

You can then run a generator with:

npx @zenclabs/api generate --api api.ts


* [`api generate`](#api-generate) * [`api help [COMMAND]`](#api-help-command) * [`api init`](#api-init)

api generate

Runs a generator on an API. Used to produce client libraries, server boilerplates and well-known API contract formats such as OpenAPI.

  $ api generate

  -a, --api=api              (required) Path to a TypeScript API definition
  -g, --generator=generator  Generator to run
  -h, --help                 show CLI help
  -l, --language=language    Language to generate
  -o, --out=out              Directory in which to output generated files

  $ api generate --language typescript --generator axios-client --out src/
  Generated the following files:
  - src/types.ts
  - src/validators.ts
  - src/client.ts

See code: build/cli/src/commands/generate.js

api help [COMMAND]

display help for api

  $ api help [COMMAND]

  COMMAND  command to show help for

  --all  see all commands in CLI

See code: @oclif/plugin-help

api init

Generates the boilerplate for an API.

  $ api init

  -h, --help  show CLI help

  $ api init
  Generated the following files:
  - api.ts
  - tsconfig.json
  - package.json

See code: build/cli/src/commands/init.js

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