}
			routes = append(routes, routeTyped)
		}
	}
	if len(routes) == 0 {
		return nil, fmt.Errorf("no routes found")
	}
	sort.Slice(routes, func(i, j int) bool {
		iName, err := strconv.Atoi(routes[i].Name)
		if err != nil {
			return false
		}
		jName, err := strconv.Atoi(routes[j].Name)
		if err != nil {
			return false
		}
		return iName < jName
	})
	return routes, nil
}

    {
     "route_config": {
      "@type": "type.googleapis.com/envoy.config.route.v3.RouteConfiguration",
      "virtual_hosts": [
       {
        "name": "backend",
        "domains": [
         "*"
        ],
        "routes": [
         {
          "match": {
           "prefix": "/healthz/ready"
          },
          "route": {
           "cluster": "agent"
          }
         }
        ]
       }

    {
     "route_config": {
      "@type": "type.googleapis.com/envoy.config.route.v3.RouteConfiguration",
      "virtual_hosts": [
       {
        "name": "backend",
        "domains": [
         "*"
        ],
        "routes": [
         {
          "match": {
           "prefix": "/stats/prometheus"
          },
          "route": {
           "cluster": "prometheus_stats"
          }
         }
        ]

```Python hl_lines="35"
{!../../docs_src/openapi_callbacks/tutorial001.py!}
```

/// tip | "Tipp"

Beachten Sie, dass Sie nicht den Router selbst (`invoices_callback_router`) an `callback=` übergeben, sondern das Attribut `.routes`, wie in `invoices_callback_router.routes`.

///

### Es in der Dokumentation ansehen

* `summary`: A short summary of the API.
* `description`: The description of your API, this can include markdown and will be shown in the docs.
* `routes`: A list of routes, these are each of the registered *path operations*. They are taken from `app.routes`.

/// info

The parameter `summary` is available in OpenAPI 3.1.0 and above, supported by FastAPI 0.99.0 and above.

///

## Overriding the defaults

///

### Add the callback router

At this point you have the *callback path operation(s)* needed (the one(s) that the *external developer*  should implement in the *external API*) in the callback router you created above.

Now use the parameter `callbacks` in *your API's path operation decorator* to pass the attribute `.routes` (that's actually just a `list` of routes/*path operations*) from that callback router:

	// Add server metrics router
	registerMetricsRouter(router)

	// Add STS router always.
	registerSTSRouter(router)

	// Add KMS router
	registerKMSRouter(router)

	// Add API router
	registerAPIRouter(router)

	router.Use(globalMiddlewares...)

	return router, nil

& 👈 🔢 `get_openapi()` 📨 🔢:

* `title`: 🗄 📛, 🎦 🩺.
* `version`: ⏬ 👆 🛠️, ✅ `2.5.0`.
* `openapi_version`: ⏬ 🗄 🔧 ⚙️. 🔢, ⏪: `3.0.2`.
* `description`: 📛 👆 🛠️.
* `routes`: 📇 🛣, 👫 🔠 ® *➡ 🛠️*. 👫 ✊ ⚪️➡️ `app.routes`.

## 🔑 🔢

⚙️ ℹ 🔛, 👆 💪 ⚙️ 🎏 🚙 🔢 🏗 🗄 🔗 & 🔐 🔠 🍕 👈 👆 💪.

    operation["summary"] = generate_operation_summary(route=route, method=method)
    if route.description:
        operation["description"] = route.description
    operation_id = route.operation_id or route.unique_id
    if operation_id in operation_ids:
        message = (
            f"Duplicate Operation ID {operation_id} for function "
            + f"{route.endpoint.__name__}"
        )

  [entryPoints.http]
    address = ":9999"

[providers]
  [providers.file]
    filename = "routes.toml"
```

👉 💬 Traefik 👂 🔛 ⛴ 9️⃣9️⃣9️⃣9️⃣ & ⚙️ ➕1️⃣ 📁 `routes.toml`.

/// tip

👥 ⚙️ ⛴ 9️⃣9️⃣9️⃣9️⃣ ↩️ 🐩 🇺🇸🔍 ⛴ 8️⃣0️⃣ 👈 👆 🚫 ✔️ 🏃 ⚫️ ⏮️ 📡 (`sudo`) 😌.

///

🔜 ✍ 👈 🎏 📁 `routes.toml`:

```TOML hl_lines="5  12  20"
[http]
  [http.middlewares]