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# mount

> Attach an extra router or ASGI app to the agent's web app without shadowing its routes.

[ref-agentbase]: /docs/server-sdks/reference/python/agents/agent-base

[get-app]: /docs/server-sdks/reference/python/agents/agent-base/get-app

[chat-gateway]: /docs/server-sdks/reference/python/agents/chat-gateway

Mount an extra router or ASGI app alongside this agent's own routes. Use it
instead of [`get_app()`][get-app] followed by `include_router()` or `mount()`
by hand, which fails silently in three ways:

* Anything mounted after `serve()` starts is lost, because `serve()` builds a
  fresh app when none exists. This method materializes the app first so a later
  `serve()` reuses it.
* The agent registers a catch-all route, and FastAPI matches routes in
  registration order, so any route added afterwards is shadowed and never runs.
  This method moves the catch-all back to the end.
* The app that `get_app()` builds answers the agent's bare route (no trailing
  slash) with `204` instead of SWML. This method re-registers that route, so the
  URL the platform fetches keeps working.

## Parameters

**`app_or_router`** `Any` — required

A FastAPI `APIRouter`, included at `prefix`, or any other ASGI app such as
`StaticFiles`, mounted at `prefix`.

---

**`prefix`** `str` — default: ""

Path prefix, without a trailing slash. Keyword-only.

---

**`name`** `str | None` — default: None

Mount name. Used only for ASGI apps. Keyword-only.

---

## Returns

[`AgentBase`][ref-agentbase] -- Returns self for method chaining.

## Example

```python {11-12}
from fastapi.staticfiles import StaticFiles
from signalwire import AgentBase
from signalwire.ai_chat import ChatGateway

agent = AgentBase(name="dispatch", route="/dispatch")
gateway = ChatGateway(
    config_url="https://bayview-taxi.example.com/dispatch",
    key="pk_your_publishable_key",
)

agent.mount(gateway.router(), prefix="/chat")
agent.mount(StaticFiles(directory="web", html=True), prefix="/demo")
agent.serve()
```

See [`ChatGateway`][chat-gateway] for what the mounted router serves.

> Attach an extra router or ASGI app to the agent's web app without shadowing its routes.