# How to integrate Bitwarden MCP with Pydantic AI ```json { "title": "How to integrate Bitwarden MCP with Pydantic AI", "toolkit": "Bitwarden", "toolkit_slug": "bitwarden", "framework": "Pydantic AI", "framework_slug": "pydantic-ai", "url": "https://composio.dev/toolkits/bitwarden/framework/pydantic-ai", "markdown_url": "https://composio.dev/toolkits/bitwarden/framework/pydantic-ai.md", "updated_at": "2026-05-12T10:03:13.659Z" } ``` ## Introduction This guide walks you through connecting Bitwarden to Pydantic AI using the Composio tool router. By the end, you'll have a working Bitwarden agent that can retrieve login details for salesforce account, list all shared vault items this week, generate a new secure password for dropbox through natural language commands. This guide will help you understand how to give your Pydantic AI agent real control over a Bitwarden account through Composio's Bitwarden MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Bitwarden with - [OpenAI Agents SDK](https://composio.dev/toolkits/bitwarden/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/bitwarden/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/bitwarden/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/bitwarden/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/bitwarden/framework/codex) - [OpenClaw](https://composio.dev/toolkits/bitwarden/framework/openclaw) - [Hermes](https://composio.dev/toolkits/bitwarden/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/bitwarden/framework/cli) - [Google ADK](https://composio.dev/toolkits/bitwarden/framework/google-adk) - [LangChain](https://composio.dev/toolkits/bitwarden/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/bitwarden/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/bitwarden/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/bitwarden/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/bitwarden/framework/crew-ai) ## TL;DR Here's what you'll learn: - How to set up your Composio API key and User ID - How to create a Composio Tool Router session for Bitwarden - How to attach an MCP Server to a Pydantic AI agent - How to stream responses and maintain chat history - How to build a simple REPL-style chat interface to test your Bitwarden workflows ## What is Pydantic AI? Pydantic AI is a Python framework for building AI agents with strong typing and validation. It leverages Pydantic's data validation capabilities to create robust, type-safe AI applications. Key features include: - Type Safety: Built on Pydantic for automatic data validation - MCP Support: Native support for Model Context Protocol servers - Streaming: Built-in support for streaming responses - Async First: Designed for async/await patterns ## What is the Bitwarden MCP server, and what's possible with it? The Bitwarden MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Bitwarden account. It provides structured and secure access to your encrypted vault, so your agent can perform actions like retrieving credentials, managing vault items, updating passwords, generating new secure passwords, and organizing your vault for you. - Secure credential retrieval: Instantly fetch login details, secure notes, or card information from your Bitwarden vault whenever your agent needs to access or autofill credentials. - Password management and updates: Direct your agent to update existing passwords, change login details, or rotate credentials for improved security. - Vault item creation and organization: Have your agent create new items—like logins, notes, or identities—and organize them into folders or collections for easy access and sharing. - Password generation and security checks: Use the agent to generate strong, unique passwords and even check for reused or weak credentials across your vault. - Automated sharing and access management: Let your agent securely share selected credentials with trusted users or teams, while maintaining detailed access controls. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `BITWARDEN_DELETE_GROUP` | Delete Group | Tool to delete a group. Use when you need to permanently remove a group by its ID after ensuring no dependencies exist. | | `BITWARDEN_DELETE_MEMBER` | Delete Member | Tool to delete a specific organization member. Use when you need to remove a member from the organization after verifying their member ID. | | `BITWARDEN_GET_GROUP_MEMBER_IDS` | Get Group Member IDs | Tool to retrieve the list of member IDs for a specific Bitwarden group. Use when you need only the user IDs of all members in a group. | | `BITWARDEN_GET_ORG_SUBSCRIPTION` | Get Organization Subscription | Tool to retrieve subscription details of the current organization. Use after obtaining a valid bearer token. | | `BITWARDEN_IMPORT_MEMBERS_AND_GROUPS` | Import Members and Groups | Tool to bulk import members and groups in a single request. Use when migrating or seeding an organization with multiple members and groups at once. Import is all-or-nothing: a single malformed entry in `members` or `groups` causes the entire request to fail. | | `BITWARDEN_REINVITE_MEMBER` | Reinvite Member | Tool to re-send an invitation to a pending or removed member. Use when an existing member's invite needs re-issuing. | | `BITWARDEN_RETRIEVE_GROUP` | Retrieve Group | Tool to retrieve details for a specific group. Use when you need to fetch group permissions and assigned collections by group ID after authenticating with a valid access token. | | `BITWARDEN_RETRIEVE_MEMBER` | Retrieve Member | Tool to retrieve details for a specific member. Use after obtaining a valid member ID to get full metadata. | | `BITWARDEN_UPDATE_MEMBER` | Update Member | Tool to update an organization member’s admin status. Use when toggling admin privileges for an existing member. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Bitwarden MCP server is an implementation of the Model Context Protocol that connects your AI agent to Bitwarden. It provides structured and secure access so your agent can perform Bitwarden operations on your behalf through a secure, permission-based interface. With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster. ## Step-by-step Guide ### 1. Prerequisites Before starting, make sure you have: - Python 3.9 or higher - A Composio account with an active API key - Basic familiarity with Python and async programming ### 1. Getting API Keys for OpenAI and Composio OpenAI API Key - Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) and create an API key. You'll need credits to use the models, or you can connect to another model provider. - Keep the API key safe. Composio API Key - Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs). - Navigate to your API settings and generate a new API key. - Store this key securely as you'll need it for authentication. ### 2. Install dependencies Install the required libraries. What's happening: - composio connects your agent to external SaaS tools like Bitwarden - pydantic-ai lets you create structured AI agents with tool support - python-dotenv loads your environment variables securely from a .env file ```bash pip install composio pydantic-ai python-dotenv ``` ### 3. Set up environment variables Create a .env file in your project root. What's happening: - COMPOSIO_API_KEY authenticates your agent to Composio's API - USER_ID associates your session with your account for secure tool access - OPENAI_API_KEY to access OpenAI LLMs ```bash COMPOSIO_API_KEY=your_composio_api_key_here USER_ID=your_user_id_here OPENAI_API_KEY=your_openai_api_key ``` ### 4. Import dependencies What's happening: - We load environment variables and import required modules - Composio manages connections to Bitwarden - MCPServerStreamableHTTP connects to the Bitwarden MCP server endpoint - Agent from Pydantic AI lets you define and run the AI assistant ```python import asyncio import os from dotenv import load_dotenv from composio import Composio from pydantic_ai import Agent from pydantic_ai.mcp import MCPServerStreamableHTTP load_dotenv() ``` ### 5. Create a Tool Router Session What's happening: - We're creating a Tool Router session that gives your agent access to Bitwarden tools - The create method takes the user ID and specifies which toolkits should be available - The returned session.mcp.url is the MCP server URL that your agent will use ```python async def main(): api_key = os.getenv("COMPOSIO_API_KEY") user_id = os.getenv("USER_ID") if not api_key or not user_id: raise RuntimeError("Set COMPOSIO_API_KEY and USER_ID in your environment") # Create a Composio Tool Router session for Bitwarden composio = Composio(api_key=api_key) session = composio.create( user_id=user_id, toolkits=["bitwarden"], ) url = session.mcp.url if not url: raise ValueError("Composio session did not return an MCP URL") ``` ### 6. Initialize the Pydantic AI Agent What's happening: - The MCP client connects to the Bitwarden endpoint - The agent uses GPT-5 to interpret user commands and perform Bitwarden operations - The instructions field defines the agent's role and behavior ```python # Attach the MCP server to a Pydantic AI Agent bitwarden_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY}) agent = Agent( "openai:gpt-5", toolsets=[bitwarden_mcp], instructions=( "You are a Bitwarden assistant. Use Bitwarden tools to help users " "with their requests. Ask clarifying questions when needed." ), ) ``` ### 7. Build the chat interface What's happening: - The agent reads input from the terminal and streams its response - Bitwarden API calls happen automatically under the hood - The model keeps conversation history to maintain context across turns ```python # Simple REPL with message history history = [] print("Chat started! Type 'exit' or 'quit' to end.\n") print("Try asking the agent to help you with Bitwarden.\n") while True: user_input = input("You: ").strip() if user_input.lower() in {"exit", "quit", "bye"}: print("\nGoodbye!") break if not user_input: continue print("\nAgent is thinking...\n", flush=True) async with agent.run_stream(user_input, message_history=history) as stream_result: collected_text = "" async for chunk in stream_result.stream_output(): text_piece = None if isinstance(chunk, str): text_piece = chunk elif hasattr(chunk, "delta") and isinstance(chunk.delta, str): text_piece = chunk.delta elif hasattr(chunk, "text"): text_piece = chunk.text if text_piece: collected_text += text_piece result = stream_result print(f"Agent: {collected_text}\n") history = result.all_messages() ``` ### 8. Run the application What's happening: - The asyncio loop launches the agent and keeps it running until you exit ```python if __name__ == "__main__": asyncio.run(main()) ``` ## Complete Code ```python import asyncio import os from dotenv import load_dotenv from composio import Composio from pydantic_ai import Agent from pydantic_ai.mcp import MCPServerStreamableHTTP load_dotenv() async def main(): api_key = os.getenv("COMPOSIO_API_KEY") user_id = os.getenv("USER_ID") if not api_key or not user_id: raise RuntimeError("Set COMPOSIO_API_KEY and USER_ID in your environment") # Create a Composio Tool Router session for Bitwarden composio = Composio(api_key=api_key) session = composio.create( user_id=user_id, toolkits=["bitwarden"], ) url = session.mcp.url if not url: raise ValueError("Composio session did not return an MCP URL") # Attach the MCP server to a Pydantic AI Agent bitwarden_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY}) agent = Agent( "openai:gpt-5", toolsets=[bitwarden_mcp], instructions=( "You are a Bitwarden assistant. Use Bitwarden tools to help users " "with their requests. Ask clarifying questions when needed." ), ) # Simple REPL with message history history = [] print("Chat started! Type 'exit' or 'quit' to end.\n") print("Try asking the agent to help you with Bitwarden.\n") while True: user_input = input("You: ").strip() if user_input.lower() in {"exit", "quit", "bye"}: print("\nGoodbye!") break if not user_input: continue print("\nAgent is thinking...\n", flush=True) async with agent.run_stream(user_input, message_history=history) as stream_result: collected_text = "" async for chunk in stream_result.stream_output(): text_piece = None if isinstance(chunk, str): text_piece = chunk elif hasattr(chunk, "delta") and isinstance(chunk.delta, str): text_piece = chunk.delta elif hasattr(chunk, "text"): text_piece = chunk.text if text_piece: collected_text += text_piece result = stream_result print(f"Agent: {collected_text}\n") history = result.all_messages() if __name__ == "__main__": asyncio.run(main()) ``` ## Conclusion You've built a Pydantic AI agent that can interact with Bitwarden through Composio's Tool Router. With this setup, your agent can perform real Bitwarden actions through natural language. You can extend this further by: - Adding other toolkits like Gmail, HubSpot, or Salesforce - Building a web-based chat interface around this agent - Using multiple MCP endpoints to enable cross-app workflows (for example, Gmail + Bitwarden for workflow automation) This architecture makes your AI agent "agent-native", able to securely use APIs in a unified, composable way without custom integrations. ## How to build Bitwarden MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/bitwarden/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/bitwarden/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/bitwarden/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/bitwarden/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/bitwarden/framework/codex) - [OpenClaw](https://composio.dev/toolkits/bitwarden/framework/openclaw) - [Hermes](https://composio.dev/toolkits/bitwarden/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/bitwarden/framework/cli) - [Google ADK](https://composio.dev/toolkits/bitwarden/framework/google-adk) - [LangChain](https://composio.dev/toolkits/bitwarden/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/bitwarden/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/bitwarden/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/bitwarden/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/bitwarden/framework/crew-ai) ## Related Toolkits - [Borneo](https://composio.dev/toolkits/borneo) - Borneo is a data security and privacy platform for sensitive data discovery and remediation. It helps organizations mitigate risk by identifying and protecting sensitive information across their infrastructure. - [Gmail](https://composio.dev/toolkits/gmail) - Gmail is Google's email service with powerful spam protection, search, and G Suite integration. It keeps your inbox organized and makes communication fast and reliable. - [Google Calendar](https://composio.dev/toolkits/googlecalendar) - Google Calendar is a time management service for scheduling meetings, events, and reminders. It streamlines personal and team organization with integrated notifications and sharing options. - [Google Drive](https://composio.dev/toolkits/googledrive) - Google Drive is a cloud storage platform for uploading, sharing, and collaborating on files. It's perfect for keeping your documents accessible and organized across devices. - [Outlook](https://composio.dev/toolkits/outlook) - Outlook is Microsoft's email and calendaring platform for unified communications and scheduling. It helps users stay organized with powerful email, contacts, and calendar management. - [Twitter](https://composio.dev/toolkits/twitter) - Twitter is a social media platform for sharing real-time updates, conversations, and news. Stay connected, informed, and engaged with communities worldwide. - [Google Sheets](https://composio.dev/toolkits/googlesheets) - Google Sheets is a cloud-based spreadsheet tool for real-time collaboration and data analysis. It lets teams work together from anywhere, updating information instantly. - [Supabase](https://composio.dev/toolkits/supabase) - Supabase is an open-source backend platform offering scalable Postgres databases, authentication, storage, and real-time APIs. It lets developers build modern apps without managing infrastructure. - [Composio](https://composio.dev/toolkits/composio) - Composio is an integration platform that connects AI agents with hundreds of business tools. It streamlines authentication and lets you trigger actions across services—no custom code needed. - [Notion](https://composio.dev/toolkits/notion) - Notion is a collaborative workspace for notes, docs, wikis, and tasks. It streamlines team knowledge, project tracking, and workflow customization in one place. - [Slack](https://composio.dev/toolkits/slack) - Slack is a channel-based messaging platform for teams and organizations. It helps people collaborate in real time, share files, and connect all their tools in one place. - [Airtable](https://composio.dev/toolkits/airtable) - Airtable combines the flexibility of spreadsheets with the power of a database for easy project and data management. Teams use Airtable to organize, track, and collaborate with custom views and automations. - [Google Docs](https://composio.dev/toolkits/googledocs) - Google Docs is a cloud-based word processor that enables document creation and real-time collaboration. Its seamless sharing and version history make team editing and content management a breeze. - [Google Super](https://composio.dev/toolkits/googlesuper) - Google Super is an all-in-one suite combining Gmail, Drive, Calendar, Sheets, Analytics, and more. It gives you a unified platform to manage your digital life, boosting productivity and organization. - [Hubspot](https://composio.dev/toolkits/hubspot) - HubSpot is an all-in-one marketing, sales, and customer service platform. It lets teams nurture leads, automate outreach, and track every customer interaction in one place. - [Codeinterpreter](https://composio.dev/toolkits/codeinterpreter) - Codeinterpreter is a Python-based coding environment with built-in data analysis and visualization. It lets you instantly run scripts, plot results, and prototype solutions inside supported platforms. - [Gong](https://composio.dev/toolkits/gong) - Gong is a platform for video meetings, call recording, and team collaboration. It helps teams capture conversations, analyze calls, and turn insights into action. - [Asana](https://composio.dev/toolkits/asana) - Asana is a collaborative work management platform for teams to organize and track projects. It streamlines teamwork, boosts productivity, and keeps everyone aligned on goals. - [Ashby](https://composio.dev/toolkits/ashby) - Ashby is an applicant tracking system that handles job postings, candidate management, and hiring analytics. - [Pipedrive](https://composio.dev/toolkits/pipedrive) - Pipedrive is a sales management platform offering pipeline visualization, lead tracking, and workflow automation. It helps sales teams keep deals moving forward efficiently and never miss a follow-up. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Bitwarden MCP? With a standalone Bitwarden MCP server, the agents and LLMs can only access a fixed set of Bitwarden tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Bitwarden and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Pydantic AI? Yes, you can. Pydantic AI fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Bitwarden tools. ### Can I manage the permissions and scopes for Bitwarden while using Tool Router? Yes, absolutely. You can configure which Bitwarden scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do. ### How safe is my data with Composio Tool Router? All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Bitwarden data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)