llama-agents-server 0.4.3

HTTP server for deploying and serving LlamaIndex workflows as web services

LlamaAgents Server

HTTP server for deploying LlamaIndex Workflows as web services. Built on Starlette and Uvicorn.

Installation

pip install llama-agents-server

Quick Start

Create a server file (e.g., my_server.py):

import asyncio
from workflows import Workflow, step
from workflows.context import Context
from workflows.events import Event, StartEvent, StopEvent
from llama_agents.server import WorkflowServer

class StreamEvent(Event):
    sequence: int

class GreetingWorkflow(Workflow):
    @step
    async def greet(self, ctx: Context, ev: StartEvent) -> StopEvent:
        for i in range(3):
            ctx.write_event_to_stream(StreamEvent(sequence=i))
        name = ev.get("name", "World")
        return StopEvent(result=f"Hello, {name}!")

server = WorkflowServer()
server.add_workflow("greet", GreetingWorkflow())

if __name__ == "__main__":
    asyncio.run(server.serve("0.0.0.0", 8080))

Or run it with the CLI:

llama-agents-server my_server.py

Features

• REST API for running, streaming, and managing workflows
• Debugger UI automatically mounted at / for visualizing and debugging workflows
• Event streaming via newline-delimited JSON or Server-Sent Events
• Human-in-the-loop support for interactive workflows
• Persistence with built-in SQLite store (or bring your own via AbstractWorkflowStore)

Client

Use llama-agents-client to interact with deployed servers programmatically.

Documentation

See the full deployment guide for API details, persistence configuration, and more.