> For a complete index of all SignalWire documentation pages, fetch https://signalwire.com/docs/llms.txt

# get_app

> Get the FastAPI application instance for use with deployment adapters.

Get the fully initialized FastAPI application instance. If the app has not been
created yet, this method initializes it with all routes, middleware, health checks,
and security headers -- the same configuration that `serve()` would create.

This is primarily used with deployment adapters like Mangum (AWS Lambda) or when
embedding the agent in a larger FastAPI application.

## **Parameters**

None.

## **Returns**

`FastAPI` -- The configured FastAPI application instance with all agent endpoints
registered.

## **Examples**

### AWS Lambda with Mangum

```python {7}
from mangum import Mangum
from signalwire import AgentBase

agent = AgentBase(name="lambda-agent")
agent.set_prompt_text("You are a helpful assistant.")

app = agent.get_app()
handler = Mangum(app)
```

### Embed in existing FastAPI app

```python {7}
from fastapi import FastAPI
from signalwire import AgentBase

main_app = FastAPI()
agent = AgentBase(name="assistant", route="/agent")

main_app.mount("/ai", agent.get_app())
```