---
title: "Angular v19 Client"
description: "Generate a type-safe Angular v19 client from OpenAPI with the Angular client for openapi-ts. Fully compatible with validators, transformers, and all core features."
url: "https://heyapi.dev/docs/openapi/typescript/clients/angular/v19"
---

Beta [Leave feedback](https://github.com/hey-api/openapi-ts/issues) · [Contribute](https://heyapi.dev/openapi-ts/community/contributing)

### About

[Section titled “About”](#about)

[Angular](https://angular.dev/) is a web framework that empowers developers to build fast, reliable applications.

The Angular client for Hey API generates a type-safe client from your OpenAPI spec, fully compatible with validators, transformers, and all core features.

### Collaborators

[Section titled “Collaborators”](#collaborators)

* [![Max Scopp](https://heyapi.dev/_astro/max-scopp_1EnVFq.webp) Max Scopp](https://github.com/max-scopp)

## Features

[Section titled “Features”](#features)

* Angular v19 support
* seamless integration with `@hey-api/openapi-ts` ecosystem
* type-safe response data and errors
* support for [`@Injectable()`](https://angular.dev/api/core/Injectable) decorators
* response data validation and transformation
* access to the original request and response
* granular request and response customization options
* minimal learning curve thanks to extending the underlying technology
* support bundling inside the generated output

## Installation

[Section titled “Installation”](#installation)

In your [configuration](https://heyapi.dev/openapi-ts/get-started), add `@hey-api/client-angular` to your plugins and you’ll be ready to generate client artifacts. 🎉

* config

  openapi-ts.config.ts

  ```js
  export default {
    input: 'hey-api/backend', // sign up at app.heyapi.dev
    output: 'src/client',
    plugins: ['@hey-api/client-angular'],
  };
  ```

* cli

  ```sh
  npx @hey-api/openapi-ts \
    -i hey-api/backend \
    -o src/client \
    -c @hey-api/client-angular
  ```

### Providers

[Section titled “Providers”](#providers)

You can use the Angular client in your application by adding `provideHeyApiClient` to your providers.

src/app/app.module.ts

```ts
import { provideHeyApiClient, client } from './client/client.gen';


export const appConfig: ApplicationConfig = {
  providers: [
    provideHttpClient(withFetch()),
    provideHeyApiClient(client),
  ],
};
```

## Configuration

[Section titled “Configuration”](#configuration)

The Angular client is built as a thin wrapper on top of Angular, extending its functionality to work with Hey API. If you’re already familiar with Angular, configuring your client will feel like working directly with Angular.

When we installed the client above, it created a [`client.gen.ts`](https://heyapi.dev/openapi-ts/output#client) file. You will most likely want to configure the exported `client` instance. There are two ways to do that.

### `setConfig()`

[Section titled “setConfig()”](#setconfig)

This is the simpler approach. You can call the `setConfig()` method at the beginning of your application or anytime you need to update the client configuration. You can pass any `HttpRequest` configuration option to `setConfig()`, and even your own [`httpClient`](#custom-httpclient) implementation.

src/index.ts

```js
import { client } from 'client/client.gen';


client.setConfig({
  baseUrl: 'https://example.com',
});
```

The disadvantage of this approach is that your code may call the `client` instance before it’s configured for the first time. Depending on your use case, you might need to use the second approach.

### Runtime API

[Section titled “Runtime API”](#runtime-api)

Since `client.gen.ts` is a generated file, we can’t directly modify it. Instead, we can tell our configuration to use a custom file implementing the Runtime API. We do that by specifying the `runtimeConfigPath` option.

openapi-ts.config.ts

```js
export default {
  input: 'hey-api/backend', // sign up at app.heyapi.dev
  output: 'src/client',
  plugins: [
    {
      name: '@hey-api/client-angular',
      runtimeConfigPath: './src/hey-api.ts',
    },
  ],
};
```

In our custom file, we need to export a `createClientConfig()` method. This function is a simple wrapper allowing us to override configuration values.

src/hey-api.ts

```ts
import type { CreateClientConfig } from './client/client.gen';


export const createClientConfig: CreateClientConfig = (config) => ({
  ...config,
  baseUrl: 'https://example.com',
});
```

With this approach, `client.gen.ts` will call `createClientConfig()` before initializing the `client` instance. If needed, you can still use `setConfig()` to update the client configuration later.

### `createClient()`

[Section titled “createClient()”](#createclient)

You can also create your own client instance. You can use it to manually send requests or point it to a different domain.

src/index.ts

```js
import { createClient } from './client/client';


const myClient = createClient({
  baseUrl: 'https://example.com',
});
```

You can also pass this instance to any SDK function through the `client` option. This will override the default instance from `client.gen.ts`.

src/index.ts

```js
const response = await getFoo({
  client: myClient,
});
```

### SDKs

[Section titled “SDKs”](#sdks)

Alternatively, you can pass the client configuration options to each SDK function. This is useful if you don’t want to create a client instance for one-off use cases.

src/index.ts

```js
const response = await getFoo({
  baseUrl: 'https://example.com', // <-- override default configuration
});
```

## `@Injectable`

[Section titled “@Injectable”](#injectable)

If you prefer to use the [`@Injectable()`](https://angular.dev/api/core/Injectable) decorators, set the `asClass` option in your SDK plugin to `true`.

* example

  src/foo.service.ts

  ```ts
  @Injectable({ providedIn: 'root' })
  export class FooService {
    // class methods
  }
  ```

* config

  openapi-ts.config.ts

  ```js
  export default {
    input: 'hey-api/backend', // sign up at app.heyapi.dev
    output: 'src/client',
    plugins: [
      '@hey-api/client-angular',
      {
        name: '@hey-api/sdk',
        asClass: true,
      },
    ],
  };
  ```

## Interceptors

[Section titled “Interceptors”](#interceptors)

Caution

This section is under construction. We appreciate your patience.

## Auth

[Section titled “Auth”](#auth)

Caution

This section is under construction. We appreciate your patience.

## Build URL

[Section titled “Build URL”](#build-url)

If you need to access the compiled URL, you can use the `buildUrl()` method. It’s loosely typed by default to accept almost any value; in practice, you will want to pass a type hint.

src/index.ts

```ts
type FooData = {
  path: {
    fooId: number;
  };
  query?: {
    bar?: string;
  };
  url: '/foo/{fooId}';
};


const url = client.buildUrl<FooData>({
  path: {
    fooId: 1,
  },
  query: {
    bar: 'baz',
  },
  url: '/foo/{fooId}',
});
console.log(url); // prints '/foo/1?bar=baz'
```

## Custom Instance

[Section titled “Custom Instance”](#custom-instance)

You can provide a custom `httpClient` instance. This is useful if you need to extend the default instance with extra functionality, or replace it altogether.

src/index.ts

```js
import { client } from 'client/client.gen';


client.setConfig({
  httpClient: inject(CustomHttpClient),
});
```

You can use any of the approaches mentioned in [Configuration](#configuration), depending on how granular you want your custom instance to be.

## Plugins

[Section titled “Plugins”](#plugins)

You might be also interested in the [Angular](https://heyapi.dev/openapi-ts/plugins/angular/v19) plugin.

## API

[Section titled “API”](#api)

You can view the complete list of options in the [UserConfig](https://github.com/hey-api/openapi-ts/blob/main/packages/openapi-ts/src/plugins/@hey-api/client-angular/types.ts) interface.

## Examples

You can view live examples on [StackBlitz](https://stackblitz.com/orgs/github/hey-api/collections/openapi-ts-examples) or on [GitHub](https://github.com/hey-api/openapi-ts/tree/main/examples).