Por exemplo, vamos supor que você possua 4 endpoints na sua API (*operações de rota*):

* `/items/public/`
* `/items/private/`
* `/users/{user_id}/activate`
* `/items/pro/`

Você poderia adicionar diferentes requisitos de permissão para cada um deles utilizando apenas dependências e sub-dependências:

```mermaid
graph TB

current_user(["current_user"])

principe.st
priv.at
priv.hu
priv.instances.scw.cloud
priv.me
priv.no
priv.pl
privatizehealthinsurance.net
pro
pro.az
pro.br
pro.cy
pro.ec
pro.fj
pro.ht
pro.in
pro.mv
pro.om
pro.pr
pro.tt
pro.typeform.com
pro.vn
prochowice.pl
prod
production.aero
productions
prof
prof.pr
profesional.bo
progressive
project.space

* `/users/{user_id}/activate`
* `/items/pro/`

そして、依存関係とサブ依存関係だけで、それぞれに異なるパーミッション要件を追加することができます:

```mermaid
graph TB

current_user(["current_user"])
active_user(["active_user"])
admin_user(["admin_user"])
paying_user(["paying_user"])

public["/items/public/"]
private["/items/private/"]
activate_user["/users/{user_id}/activate"]
pro_items["/items/pro/"]

current_user --> active_user

  :Darwin*arm64) distributionPlatform=darwin-aarch64 ;;
  :Linux*x86_64*) distributionPlatform=linux-amd64 ;;
  *)
    echo "Cannot detect native platform for mvnd on $(uname)-$(uname -m), use pure java version" >&2
    distributionPlatform=linux-amd64
    ;;
  esac
  distributionUrl="${distributionUrl%-bin.*}-$distributionPlatform.zip"
  ;;
maven-mvnd-*) MVN_CMD=mvnd.sh _MVNW_REPO_PATTERN=/maven/mvnd/ ;;

	oauth2Config := oauth2.Config{
		ClientID:     pro.ClientID,
		ClientSecret: pro.ClientSecret,
		RedirectURL:  pro.RedirectURL,

		// Discovery returns the OAuth2 endpoints.
		Endpoint: provider.Endpoint(),

		// "openid" is a required scope for OpenID Connect flows.
		Scopes: []string{oidc.ScopeOpenID, "groups"},
	}

	state := fmt.Sprintf("x%dx", time.Now().Unix())

For example, let's say you have 4 API endpoints (*path operations*):

* `/items/public/`
* `/items/private/`
* `/users/{user_id}/activate`
* `/items/pro/`

then you could add different permission requirements for each of them just with dependencies and sub-dependencies:

```mermaid
graph TB

current_user(["current_user"])
active_user(["active_user"])

		// httpclient target is part of ListenNotification
		// which doesn't need to be listed as part of the ARN list
		// This list is only meant for external targets, filter
		// this out pro-actively.
		if !strings.HasPrefix(targetID.ID, "httpclient+") {
			arns = append(arns, targetID.ToARN(region).String())
		}
	}

	return arns
}

// Loads notification policies for all buckets into EventNotifier.

/// note | Nota Técnica

También podrías usar `from starlette.testclient import TestClient`.

**FastAPI** proporciona el mismo `starlette.testclient` como `fastapi.testclient` solo por conveniencia para ti, el desarrollador. Pero proviene directamente de Starlette.

///

/// tip | Consejo

Wenn eine Ihrer Abhängigkeiten mehrmals für dieselbe *Pfadoperation* deklariert wird, beispielsweise wenn mehrere Abhängigkeiten eine gemeinsame Unterabhängigkeit haben, wird **FastAPI** diese Unterabhängigkeit nur einmal pro Request aufrufen.

## URL de OpenAPI

Por defecto, el esquema OpenAPI se sirve en `/openapi.json`.

Pero puedes configurarlo con el parámetro `openapi_url`.

Por ejemplo, para configurarlo para que se sirva en `/api/v1/openapi.json`:

{* ../../docs_src/metadata/tutorial002.py hl[3] *}