AgentOS is built on FastAPI, which means you can easily integrate your existing FastAPI applications or add custom routes and routers to extend your agent’s capabilities.

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Quick Start

The simplest way to bring your own FastAPI app is to pass it to the AgentOS constructor: 
from fastapi import FastAPI
from agno.agent import Agent
from agno.models.openai import OpenAIChat
from agno.os import AgentOS

# Create your custom FastAPI app
app = FastAPI(title="My Custom App")

# Add your custom routes
@app.get("/status")
async def status_check():
    return {"status": "healthy"}

# Pass your app to AgentOS
agent_os = AgentOS(
    agents=[Agent(id="basic-agent", model=OpenAIChat(id="gpt-5-mini"))],
    fastapi_app=app  # Your custom FastAPI app
)

# Get the combined app with both AgentOS and your routes
app = agent_os.get_app()

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Running with FastAPI CLI

AgentOS applications are compatible with the FastAPI CLI for development. First, install the FastAPI CLI:
Install FastAPI CLI
pip install "fastapi[standard]"
Then run the app: 
fastapi run your_app.py

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Running in Production

For production deployments, you can use any ASGI server: 
uvicorn main:app --host 0.0.0.0 --port 8000 --workers 4

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Adding Custom Routers

For better organization, use FastAPI routers to group related endpoints: 
from fastapi import FastAPI, APIRouter
from agno.agent import Agent
from agno.models.openai import OpenAIChat
from agno.os import AgentOS

# Create a custom router
api_router = APIRouter(prefix="/api/v1", tags=["custom"])

@api_router.get("/users")
async def get_users():
    return [{"id": 1, "name": "John Doe"}]

@api_router.post("/users")
async def create_user(user_data: dict):
    return {"id": 2, "message": "User created"}

# Create FastAPI app and include your router
app = FastAPI()
app.include_router(api_router)

# Integrate with AgentOS
agent_os = AgentOS(
    agents=[Agent(id="basic-agent", model=OpenAIChat(id="gpt-5-mini"))],
    fastapi_app=app
)

app = agent_os.get_app()

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Middleware and Dependencies

You can add middleware and dependencies to your custom FastAPI app: 
from fastapi import FastAPI, Depends, HTTPException
from fastapi.middleware.cors import CORSMiddleware
from fastapi.security import HTTPBearer

app = FastAPI()

# Add CORS middleware
app.add_middleware(
    CORSMiddleware,
    allow_origins=["https://yourdomain.com"],
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# Security dependency
security = HTTPBearer()

async def verify_token(token: str = Depends(security)):
    if token.credentials != "your-secret-token":
        raise HTTPException(status_code=401, detail="Invalid token")
    return token

# Protected route
@app.get("/protected", dependencies=[Depends(verify_token)])
async def protected_endpoint():
    return {"message": "Access granted"}

# Integrate with AgentOS
agent_os = AgentOS(
    agents=[Agent(id="basic-agent", model=OpenAIChat(id="gpt-5-mini"))], 
    fastapi_app=app
)

app = agent_os.get_app()

​
Access AgentOS Routes

You can programmatically access and inspect the routes added by AgentOS: 
agent_os = AgentOS(agents=[agent])
app = agent_os.get_app()

# Get all routes
routes = agent_os.get_routes()

for route in routes:
    print(f"Route: {route.path}")
    if hasattr(route, 'methods'):
        print(f"Methods: {route.methods}")

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Developer Resources