How to integrate Paradym MCP with Pydantic AI

This guide walks you through connecting Paradym to Pydantic AI using the Composio tool router. By the end, you'll have a working Paradym agent that can issue sd-jwt verifiable credential for a user, verify authenticity of a presented credential, list all credentials issued to an email address through natural language commands. This guide will help you understand how to give your Pydantic AI agent real control over a Paradym account through Composio's Paradym MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved.

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Paradym is an API-first platform for issuing, verifying, and managing verifiable credentials. It streamlines credential workflows using standards like SD-JWT VCs and AnonCreds.

69 Tools

Introduction

This guide walks you through connecting Paradym to Pydantic AI using the Composio tool router. By the end, you'll have a working Paradym agent that can issue sd-jwt verifiable credential for a user, verify authenticity of a presented credential, list all credentials issued to an email address through natural language commands.

This guide will help you understand how to give your Pydantic AI agent real control over a Paradym account through Composio's Paradym MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

Also integrate Paradym with

OpenAI Agents SDKClaude Agent SDKClaude CodeClaude CoworkCodexOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

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 Paradym
  • 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 Paradym 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 Paradym MCP server, and what's possible with it?

The Paradym MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Paradym account. It provides structured and secure access to your verifiable credential workflows, so your agent can perform actions like issuing credentials, verifying identity claims, managing credential lifecycles, and supporting interoperability across digital identity standards.

  • Automated credential issuance: Instruct your agent to issue new verifiable credentials to users or systems, supporting protocols like SD-JWT VCs and AnonCreds.
  • Seamless credential verification: Enable your agent to verify the authenticity and validity of credentials presented by others, streamlining onboarding and trust checks.
  • Credential lifecycle management: Allow your agent to update, revoke, or renew existing credentials, ensuring full control over your digital identity assets.
  • Interoperability with identity standards: Leverage your agent to work across OpenID4VC, DIDComm, and other standards for maximum compatibility and flexibility.
  • Audit and usage tracking: Task your agent to retrieve detailed logs or status reports on credential activity, helping you maintain compliance and visibility.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step09 STEPS
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
2

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard 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.
  • Navigate to your API settings and generate a new API key.
  • Store this key securely as you'll need it for authentication.
3

Install dependencies

bash
pip install composio pydantic-ai python-dotenv

Install the required libraries.

What's happening:

  • composio connects your agent to external SaaS tools like Paradym
  • pydantic-ai lets you create structured AI agents with tool support
  • python-dotenv loads your environment variables securely from a .env file
4

Set up environment variables

bash
COMPOSIO_API_KEY=your_composio_api_key_here
USER_ID=your_user_id_here
OPENAI_API_KEY=your_openai_api_key

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
5

Import dependencies

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()
What's happening:
  • We load environment variables and import required modules
  • Composio manages connections to Paradym
  • MCPServerStreamableHTTP connects to the Paradym MCP server endpoint
  • Agent from Pydantic AI lets you define and run the AI assistant
6

Create a Tool Router Session

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 Paradym
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["paradym"],
    )
    url = session.mcp.url
    if not url:
        raise ValueError("Composio session did not return an MCP URL")
What's happening:
  • We're creating a Tool Router session that gives your agent access to Paradym 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
7

Initialize the Pydantic AI Agent

python
# Attach the MCP server to a Pydantic AI Agent
paradym_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
agent = Agent(
    "openai:gpt-5",
    toolsets=[paradym_mcp],
    instructions=(
        "You are a Paradym assistant. Use Paradym tools to help users "
        "with their requests. Ask clarifying questions when needed."
    ),
)
What's happening:
  • The MCP client connects to the Paradym endpoint
  • The agent uses GPT-5 to interpret user commands and perform Paradym operations
  • The instructions field defines the agent's role and behavior
8

Build the chat interface

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 Paradym.\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()
What's happening:
  • The agent reads input from the terminal and streams its response
  • Paradym API calls happen automatically under the hood
  • The model keeps conversation history to maintain context across turns
9

Run the application

python
if __name__ == "__main__":
    asyncio.run(main())
What's happening:
  • The asyncio loop launches the agent and keeps it running until you exit

Complete Code

Here's the complete code to get you started with Paradym and Pydantic AI:

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 Paradym
    composio = Composio(api_key=api_key)
    session = composio.create(
        user_id=user_id,
        toolkits=["paradym"],
    )
    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
    paradym_mcp = MCPServerStreamableHTTP(url, headers={"x-api-key": COMPOSIO_API_KEY})
    agent = Agent(
        "openai:gpt-5",
        toolsets=[paradym_mcp],
        instructions=(
            "You are a Paradym assistant. Use Paradym 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 Paradym.\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 Paradym through Composio's Tool Router. With this setup, your agent can perform real Paradym 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 + Paradym for workflow automation)
This architecture makes your AI agent "agent-native", able to securely use APIs in a unified, composable way without custom integrations.
TOOLS

Supported Tools

Every Paradym action and event your agent gets out of the box.

Activate Certificate

Tool to activate a certificate for use in a project.

Archive AnonCreds Credential Template

Tool to archive an AnonCreds credential template in a project.

Archive mDoc Credential Template

Tool to archive an mDoc credential template.

Archive Presentation Template

Tool to archive a presentation template in a project.

Archive SD-JWT VC Credential Template

Tool to archive an SD-JWT VC credential template in a project.

Create AnonCreds Credential Template

Tool to create a new AnonCreds credential template.

Create Certificate

Tool to create a new self-signed X.

Create DIDComm Connection Invitation

Tool to create a DIDComm connection invitation.

Create DIDComm Issuance Offer

Tool to create a DIDComm credential issuance offer.

Create OpenID4VC Credential Offer

Tool to create an OpenID4VC credential offer.

Create OpenID4VC Verification Request

Tool to create an OpenID4VC verification request.

Create Presentation Template

Tool to create a new presentation template.

Create Project Webhook

Tool to create a new webhook for a project.

Create SD-JWT VC Credential Template

Tool to create a new SD-JWT VC credential template with selective disclosure capabilities.

Create Trusted Entity

Tool to create a new trusted entity for a project.

Deactivate Certificate

Tool to deactivate a certificate in a project.

Delete DIDComm Connection

Tool to delete a DIDComm connection from a project.

Delete DIDComm Invitation

Tool to delete a DIDComm invitation from a project.

Delete Trusted Entity

Tool to delete a trusted entity from a project.

Delete Project Webhook

Tool to delete a webhook endpoint from a project.

Get AnonCreds Credential Template

Tool to retrieve a specific AnonCreds credential template by ID.

Get AnonCreds Credential Template JSON Schema

Tool to retrieve the JSON schema for an AnonCreds credential template.

Get DIDComm Connection

Tool to retrieve a specific DIDComm connection by ID.

Get DIDComm Connections

Tool to retrieve a list of DIDComm connections for a project.

Get DIDComm Invitation

Tool to retrieve a specific DIDComm invitation by ID.

Get DIDComm Issuance Session

Tool to retrieve a specific DIDComm issuance session by ID.

Get DIDs

Tool to retrieve a list of Decentralized Identifiers (DIDs) for a specific project.

Get mDoc Credential Template

Tool to retrieve a specific mDoc credential template by ID.

Get mDoc Credential Template JSON Schema

Tool to retrieve the JSON schema for an mDoc credential template.

Get OpenID4VC Issuance Session

Tool to retrieve a specific OpenID4VC issuance session by ID.

Get OpenID4VC Verification Session

Tool to retrieve a specific OpenID4VC verification session by ID.

Get Presentation Template

Tool to retrieve a specific presentation template by ID.

Get Presentation Templates

Tool to retrieve a list of presentation templates for a project.

Get Project Members

Tool to retrieve a list of project members.

Get Project Profile

Tool to retrieve the default profile for a project.

Get Projects

Tool to retrieve a list of all projects accessible to the authenticated user.

Get Project Webhooks

Tool to retrieve a list of webhooks configured for a specific project.

Get SD-JWT VC Credential Template

Tool to retrieve a specific SD-JWT VC credential template by ID.

Get SD-JWT VC Credential Template JSON Schema

Tool to retrieve the JSON schema for an SD-JWT VC credential template.

Get Trusted Entities

Tool to retrieve trusted entities for a specific project.

Get Trusted Entity

Tool to retrieve a specific trusted entity by ID.

Issue Direct SD-JWT VC

Tool to directly issue an SD-JWT VC credential without exchange protocol.

List AnonCreds Credential Templates

Tool to retrieve all AnonCreds credential templates for a project.

List Certificates

Tool to retrieve all X.

List Certificate Signing Requests

Tool to retrieve all certificate signing requests for a project.

List DIDComm Invitations

Tool to retrieve all DIDComm invitations for a project.

List DIDComm Issuance Offers

Tool to list all DIDComm issuance offers within a project.

List DIDComm Mediator Connections

Tool to retrieve connections for a DIDComm mediator.

List DIDComm Mediators

Tool to retrieve all DIDComm mediators for a project.

List DIDComm Verification Requests

Tool to list all DIDComm verification sessions for a project.

List Issued Credentials

Tool to list metadata for all issued credentials within a project.

List mDoc Credential Templates

Tool to retrieve all mDoc credential templates for a project.

List OpenID4VC Issuance Sessions

Tool to retrieve all OpenID4VC issuance sessions for a project.

List OpenID4VC Verification Sessions

Tool to retrieve all OpenID4VC verification sessions for a project.

List SD-JWT VC Credential Templates

Tool to retrieve all SD-JWT VC credential templates for a project.

Receive DIDComm Invitation

Tool to receive and process an external DIDComm invitation.

Revoke Certificate

Tool to revoke a certificate in a project.

Send DIDComm Basic Message

Tool to send a basic DIDComm message to a connection.

Send Custom DIDComm Message

Tool to send a custom DIDComm message to a connection.

Unarchive AnonCreds Credential Template

Tool to unarchive an archived AnonCreds credential template.

Unarchive mDoc Credential Template

Tool to unarchive an archived mDoc credential template.

Unarchive SD-JWT VC Credential Template

Tool to unarchive an archived SD-JWT VC credential template.

Update DIDComm Connection

Tool to update a DIDComm connection.

Update mDoc Credential Template

Tool to update an existing mDoc credential template.

Update Presentation Template

Tool to update an existing presentation template.

Update Project

Tool to update an existing project's name and verification data access settings.

Update Project Profile

Tool to update the default profile for a project.

Update SD-JWT VC Credential Template

Tool to update an existing SD-JWT VC credential template.

Update Trusted Entity

Tool to update an existing trusted entity in a project.

FRAMEWORKS

How to build Paradym MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Paradym MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Paradym MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Paradym MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Paradym MCP with Claude Cowork

Codex logo

Codex

Use Paradym MCP with Codex

OpenClaw logo

OpenClaw

Use Paradym MCP with OpenClaw

Hermes logo

Hermes

Use Paradym MCP with Hermes

CLI logo

CLI

Use Paradym MCP with CLI

Google ADK logo

Google ADK

Use Paradym MCP with Google ADK

LangChain logo

LangChain

Use Paradym MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Paradym MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Paradym MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Paradym MCP with LlamaIndex

CrewAI logo

CrewAI

Use Paradym MCP with CrewAI

FAQ

Frequently asked questions

With a standalone Paradym MCP server, the agents and LLMs can only access a fixed set of Paradym tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Paradym and many other apps based on the task at hand, all through a single MCP endpoint.

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 Paradym tools.

Yes, absolutely. You can configure which Paradym 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.

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 Paradym data and credentials are handled as safely as possible.

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati
Harsha Gaddipati
Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya
Abhi Arya
Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave
Nirman Dave
CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu
Ryan Yu
Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola
Tomisin Jenrola
Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

Jerome Leclanche
Jerome Leclanche
Co-Founder, Ingram Technologies