appkit-assistant 0.15.0

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appkit-assistant

AI assistant component for Reflex applications with MCP server integration.

appkit-assistant provides a complete conversational AI interface built on Reflex, featuring OpenAI and Perplexity integrations, Model Context Protocol (MCP) server management, and secure credential handling. It includes both backend processing services and ready-to-use UI components for building AI-powered applications.

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✨ Features

• Multi-Model Support - OpenAI Chat Completions, OpenAI Responses API, Perplexity, and fallback Lorem Ipsum processor
• MCP Server Integration - Manage and connect to Model Context Protocol servers as tools
• System Prompt Management - Versioned system prompts with admin editor interface
• Secure Credential Management - Encrypted storage and handling of API keys and server credentials
• Reflex UI Components - Pre-built assistant interface with composer, thread management, and message display
• Streaming Responses - Real-time streaming of AI responses with chunked content
• Thread Management - Persistent conversation threads with state management

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🚀 Installation

As Part of AppKit Workspace

If you're using the full AppKit workspace:

git clone https://github.com/jenreh/appkit.git
cd appkit
uv sync

Standalone Installation

Install from PyPI:

pip install appkit-assistant

Or with uv:

uv add appkit-assistant

Dependencies

• appkit-commons (shared utilities)
• openai>=2.3.0 (OpenAI API client)

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🏁 Quick Start

Basic Setup

1. Configure your API keys in your application's configuration:

from appkit_assistant.configuration import AssistantConfig

# In your app configuration
assistant_config = AssistantConfig(
    openai_api_key="your-openai-key",
    perplexity_api_key="your-perplexity-key",
    # Optional: custom OpenAI base URL
    openai_base_url="https://api.openai.com/v1"
)

2. Register processors with the ModelManager:

from appkit_assistant.backend.model_manager import ModelManager
from appkit_assistant.backend.processors.openai_chat_completion_processor import OpenAIChatCompletionProcessor
from appkit_assistant.backend.processors.perplexity_processor import PerplexityProcessor

manager = ModelManager()
manager.register_processor("openai", OpenAIChatCompletionProcessor(assistant_config))
manager.register_processor("perplexity", PerplexityProcessor(assistant_config))

3. Use the assistant component in your Reflex app:

import reflex as rx
from appkit_assistant.components import Assistant

def assistant_page():
    return rx.container(
        Assistant(),
        height="100vh"
    )

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📖 Usage

Model Management

The ModelManager singleton handles all AI processors and models:

from appkit_assistant.backend.model_manager import ModelManager

manager = ModelManager()

# Get all available models
models = manager.get_all_models()

# Get a specific model
model = manager.get_model("gpt-4")

# Set default model
manager.set_default_model("gpt-4")

Processing Messages

Process conversations using the registered processors:

from appkit_assistant.backend.models import Message, MessageType

messages = [
    Message(role="user", content="Hello, how are you?", type=MessageType.TEXT)
]

async for chunk in manager.get_processor_for_model("gpt-4").process(messages, "gpt-4"):
    print(f"Received: {chunk.content}")

MCP Server Management

Manage MCP servers for tool integration:

from appkit_assistant.backend.models import MCPServer

mcp_server = MCPServer(
    name="my-server",
    command="python",
    args=["-m", "my_mcp_server"],
    headers={"Authorization": "Bearer token"}
)

# Use in processing
async for chunk in processor.process(messages, "gpt-4", mcp_servers=[mcp_server]):
    # Handle response with MCP tools
    pass

UI Components

Assistant Interface

The main Assistant component provides a complete chat interface:

from appkit_assistant.components import Assistant

def chat_page():
    return Assistant()

Individual Components

Use individual components for custom layouts:

import reflex as rx
from appkit_assistant.components import ThreadList, composer

def custom_assistant():
    return rx.vstack(
        ThreadList(),
        composer(),
        spacing="4"
    )

MCP Server Management UI

Display and manage MCP servers:

from appkit_assistant.components import mcp_servers_table

def servers_page():
    return mcp_servers_table()

System Prompt Editor

Admin interface for managing versioned system prompts:

from appkit_assistant.components.system_prompt_editor import system_prompt_editor

def prompt_editor_page():
    return system_prompt_editor()

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🔧 Configuration

AssistantConfig

Configure API keys and settings:

from appkit_assistant.configuration import AssistantConfig

config = AssistantConfig(
    openai_api_key="sk-...",
    openai_base_url="https://custom.openai.endpoint/v1",
    perplexity_api_key="pplx-...",
    google_api_key="AIza..."  # For future Google integrations
)

Processor Registration

Register processors based on available credentials:

from appkit_assistant.backend.processors import (
    OpenAIChatCompletionProcessor,
    PerplexityProcessor,
    LoremIpsumProcessor
)

manager = ModelManager()

if config.openai_api_key:
    manager.register_processor("openai", OpenAIChatCompletionProcessor(config))

if config.perplexity_api_key:
    manager.register_processor("perplexity", PerplexityProcessor(config))

# Always available fallback
manager.register_processor("lorem", LoremIpsumProcessor())

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📋 API Reference

Core Classes

• ModelManager - Singleton model and processor registry
• Processor - Abstract base for AI processors
• AIModel - Model metadata and configuration
• Message - Conversation message structure
• MCPServer - MCP server configuration

Component API

• Assistant - Complete assistant interface
• composer - Message input component
• ThreadList - Conversation thread list
• MessageComponent - Individual message display
• mcp_servers_table - MCP server management table
• system_prompt_editor - Admin interface for system prompts

State Management

• ThreadState - Individual thread state
• ThreadListState - Thread list management

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🔒 Security

[!IMPORTANT] API keys and MCP server credentials are handled securely using the appkit-commons configuration system. Never hardcode secrets in your code.

• Use SecretStr for sensitive configuration values
• Credentials are encrypted at rest when stored in the database
• MCP server headers support encrypted storage

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🤝 Integration Examples

With AppKit User Management

Combine with appkit-user for authenticated assistants:

from appkit_user import authenticated, requires_role

@authenticated()
@requires_role("assistant_user")
def protected_assistant_page():
    return assistant.Assistant()

Custom Processor Implementation

Implement your own AI processor:

from appkit_assistant.backend.processor import Processor
from appkit_assistant.backend.models import AIModel, Chunk, Message

class CustomProcessor(Processor):
    def get_supported_models(self):
        return {
            "custom-model": AIModel(
                id="custom-model",
                text="Custom AI Model",
                icon="🤖"
            )
        }

    async def process(self, messages, model_id, files=None, mcp_servers=None):
        # Your AI processing logic here
        yield Chunk(content="Response from custom model", type="text")

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📚 Related Components

• appkit-mantine - UI components used in the assistant interface
• appkit-user - User authentication and authorization
• appkit-commons - Shared utilities and configuration