How to integrate Digicert MCP with OpenAI Agents SDK

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Introduction

This guide walks you through connecting Digicert to the OpenAI Agents SDK using the Composio tool router. By the end, you'll have a working Digicert agent that can list all intermediate certificates for your account, create a new api key for admin, update the schedule for monthly security reports through natural language commands.

This guide will help you understand how to give your OpenAI Agents SDK agent real control over a Digicert account through Composio's Digicert MCP server.

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

Also integrate Digicert with

TL;DR

Here's what you'll learn:
  • Get and set up your OpenAI and Composio API keys
  • Install the necessary dependencies
  • Initialize Composio and create a Tool Router session for Digicert
  • Configure an AI agent that can use Digicert as a tool
  • Run a live chat session where you can ask the agent to perform Digicert operations

What is OpenAI Agents SDK?

The OpenAI Agents SDK is a lightweight framework for building AI agents that can use tools and maintain conversation state. It provides a simple interface for creating agents with hosted MCP tool support.

Key features include:

  • Hosted MCP Tools: Connect to external services through hosted MCP endpoints
  • SQLite Sessions: Persist conversation history across interactions
  • Simple API: Clean interface with Agent, Runner, and tool configuration
  • Streaming Support: Real-time response streaming for interactive applications

What is the Digicert MCP server, and what's possible with it?

The Digicert MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Digicert account. It provides structured and secure access to your digital certificate management, so your agent can perform actions like auditing users, creating API keys, checking permissions, listing certificates, and updating reports on your behalf.

  • API key management and creation: Let your agent securely generate new API keys for specific users and permissions, ensuring controlled access for your team and services.
  • Permission and access validation: Have your agent check if specific permissions are available before performing sensitive operations, helping you enforce security best practices automatically.
  • Intermediate certificate inventory: Instantly retrieve and review all intermediate certificates in your Digicert account—perfect for audits or compliance checks.
  • User management and auditing: Effortlessly list all CertCentral account users, including detailed information for each user, to streamline management and oversight.
  • Automated report configuration updates: Direct your agent to update scheduled report configurations—changing recipients, formats, or schedules—with just a single instruction.

Supported Tools & Triggers

Tools
Add Tags to CertificateTool to add custom tags to one or more certificates for categorization.
Check PermissionTool to check if a specific permission is available.
Create API KeyTool to create a new API key with specified permissions.
Create AuthKeyTool to create a new AuthKey for account authentication.
Create Container IP RulesTool to add an IP restriction rule to a CertCentral account.
Create Finance Order PricingTool to get price estimates for a certificate order.
Create OrganizationTool to create a new organization in your DigiCert CertCentral account.
Create Organization ValidationTool to submit an organization for validation and add verified contacts for specific product types.
List Scan TemplatesTool to retrieve the list of scan templates along with their name, status, and configuration.
Delete Account AuthKeyTool to delete your account's AuthKey.
Delete Certificate from DiscoveryTool to delete certificates from DigiCert Discovery inventory.
Delete DomainTool to delete a domain with the given ID.
Delete SSH KeyTool to delete SSH keys from DigiCert Discovery.
Delete Discovery EndpointsTool to delete one or more endpoints from the Discovery API.
Execute GraphQL QueryTool to execute GraphQL queries against DigiCert Custom Reports API.
Filter KeysTool to filter keys in DigiCert Discovery API by various criteria.
Get Account DetailsTool to retrieve details about your CertCentral account.
Get Account DetailsTool to retrieve account details for the authenticated user.
Get Account Guest Access URLTool to retrieve the guest access URL for your DigiCert account.
Get Account MetadataTool to retrieve metadata for custom order fields in the account.
Get Account SAML EntityTool to retrieve SAML entity details for your account.
Get Agent IP Port DetailsTool to retrieve agent IP port details from DigiCert Discovery API.
Get Alert CountTool to retrieve alert count from DigiCert Discovery API dashboard.
Get AuthKey DetailsTool to retrieve AuthKey details by ID.
List Authorized ContainersTool to list all containers authorized to perform a permission action.
Get Certificate Authority HelperTool to retrieve certificate authority API helper information including version details.
Get Certificate Security RatingTool to retrieve SSL certificate security rating from DigiCert Discovery API.
Get Cloud Scan DetailsTool to get cloud scan details from DigiCert Discovery API.
Get Container by IDTool to get details about a specific container using its ID.
Get Container ChildrenTool to list all child containers for a parent container.
Get Container IP RulesTool to retrieve a list of existing IP restriction rules in a CertCentral account.
Get Container Order OrganizationsTool to list all organizations assigned to a container.
Get Container Product LimitsTool to get information about the limits and settings for a container's enabled products.
Get Container RolesTool to retrieve all access roles available to a container.
Get Container Template DetailsTool to get details about a template in a container.
Get Domain DCV InformationTool to retrieve domain DCV (Domain Control Validation) information from DigiCert.
Get Domain DCV EmailsTool to retrieve email addresses that receive validation emails from DigiCert for the email domain control validation (DCV) method.
Get Domain Expiration CountTool to get the number of domains in your account with expired or expiring OV or EV domain validations.
Get Domain Validation TypeTool to list available validation types for domains.
Get Finance BalanceTool to view the current balance of your DigiCert account.
Get Finance Balance HistoryTool to list balance adjustment history for your DigiCert account.
Get Remote Service InformationTool to retrieve remote service information from DigiCert Document Manager CSC API.
Get API Key DetailsTool to retrieve detailed information about an API key.
Get MPKI VersionTool to query the TLM application version from DigiCert MPKI API.
Get Order Certificate Status ChangesTool to list orders that changed status during a given time frame.
Get Organization DetailsTool to retrieve detailed information about an organization from DigiCert.
Get Organization Contact InfoTool to retrieve organization and technical contact details for a specific organization.
Get Recent OrganizationsTool to retrieve the three most recently used organizations from your CertCentral account.
Get Organization ValidationTool to get validation details for an organization.
Get Organization Validation TypeTool to list available validation types for organizations.
Get Product by NameTool to get information about a product by its name identifier.
Get Product Platform Certificate Format MappingTool to list the certificate format that is returned for a particular server platform.
Get Product PricingTool to retrieve a comprehensive list of product prices available under your DigiCert account.
Get Remote Service InfoTool to retrieve information about DigiCert's Document Manager CSC (Cloud Signature Consortium) remote service.
Get Order ReportTool to retrieve a CSV report of all certificate orders.
Get Report Order ExpiringTool to get the number of orders and certificates that expire within 0-30, 30-60, and 60-90 days from now.
Get Report Request SummaryTool to get total requests and requests by type for your account.
Get Scan SubdomainsTool to retrieve all subdomains included in a DigiCert Discovery scan.
Get User DetailsTool to retrieve details about a specific user in CertCentral.
Check Username AvailabilityTool to check if a username is available in DigiCert.
List API Access RolesTool to retrieve a list of available API access roles.
List API KeysTool to retrieve a list of API keys and ACME URLs.
List Certificate Filter ValuesTool to retrieve available filter values for certificate attributes from DigiCert Discovery API.
List Certificate OrdersTool to list all certificate orders in your DigiCert account.
List CertificatesTool to list all certificates discovered by DigiCert Discovery scans.
List ContainersTool to retrieve a list of all containers (divisions) in your DigiCert account.
List Container TemplatesTool to list all templates that can be used when creating containers.
List Domain DCV MethodsTool to retrieve available domain control validation (DCV) methods for domains.
List DomainsTool to list all domains in your CertCentral account.
List Intermediate CertificatesTool to retrieve a list of intermediate certificates.
List LocalesTool to retrieve a list of available locales.
List Organization Potential ApproversTool to list all users and contacts that can be validated as verified contacts (also called EV approvers).
List OrganizationsTool to retrieve all organizations in your DigiCert account.
List PermissionsTool to list all permissions for the authenticated user.
List Available ProductsTool to list all products available to your CertCentral account.
List SensorsTool to list all sensors used for network scanning in DigiCert Discovery.
List Service UsersTool to list all DigiCert service users (API-only users).
List CertCentral UsersTool to retrieve a list of CertCentral account users.
Resend User Create EmailTool to resend the create user email to a user.
Submit Domain for ValidationTool to submit a domain for validation with specified validation types.
Update Account EmailsTool to update account notification and emergency email addresses.
Update ContainerTool to edit a container's details including name and description.
Update Container Allowed Domain NamesTool to update a container's allowed domains.
Update Container User AssignmentsTool to update a container's user assignments.
Activate DomainTool to activate a domain in DigiCert CertCentral.
Resend Domain DCV EmailsTool to resend domain control validation (DCV) emails for a domain.
Update API KeyTool to edit an API key's name or access role restrictions.
Update API Key StatusTool to activate, deactivate, or revoke a DigiCert API key.
Update Notification SettingsTool to update CertCentral account notification settings.
Update OrganizationTool to update an organization's details in your DigiCert CertCentral account.
Activate OrganizationTool to activate an organization in DigiCert CertCentral.
Update Organization ContactTool to update or replace organization contact and technical contact for an organization.
Deactivate OrganizationTool to deactivate an organization in DigiCert CertCentral.
Update Renewal Email PreferenceTool to enable or disable renewal notifications for SSL/TLS certificates discovered in DigiCert Discovery.
Update ReportTool to update an existing report’s configuration.
Update User ProfileTool to update a user's profile information in CertCentral.
Update User Container AssignmentsTool to update container (division) assignments for a user.
Update User RoleTool to change a user's access role in CertCentral.
Validate VMC Encoded LogoTool to validate if an SVG file format is compatible with Verified Mark Certificate (VMC) or Common Mark Certificate (CMC) requirements.
Validate VMC/CMC Logo FormatTool to validate SVG logo format for Verified Mark Certificates (VMC) or Common Mark Certificates (CMC).
Verify TemplateTool to verify a certificate template structure against DigiCert's validation rules.

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

Prerequisites

Before starting, make sure you have:
  • Composio API Key and OpenAI API Key
  • Primary know-how of OpenAI Agents SDK
  • A live Digicert project
  • Some knowledge of Python or Typescript

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

Install dependencies

pip install composio_openai_agents openai-agents python-dotenv

Install the Composio SDK and the OpenAI Agents SDK.

Set up environment variables

bash
OPENAI_API_KEY=sk-...your-api-key
COMPOSIO_API_KEY=your-api-key
USER_ID=composio_user@gmail.com

Create a .env file and add your OpenAI and Composio API keys.

Import dependencies

import asyncio
import os
from dotenv import load_dotenv

from composio import Composio
from composio_openai_agents import OpenAIAgentsProvider
from agents import Agent, Runner, HostedMCPTool, SQLiteSession
What's happening:
  • You're importing all necessary libraries.
  • The Composio and OpenAIAgentsProvider classes are imported to connect your OpenAI agent to Composio tools like Digicert.

Set up the Composio instance

load_dotenv()

api_key = os.getenv("COMPOSIO_API_KEY")
user_id = os.getenv("USER_ID")

if not api_key:
    raise RuntimeError("COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key")

# Initialize Composio
composio = Composio(api_key=api_key, provider=OpenAIAgentsProvider())
What's happening:
  • load_dotenv() loads your .env file so OPENAI_API_KEY and COMPOSIO_API_KEY are available as environment variables.
  • Creating a Composio instance using the API Key and OpenAIAgentsProvider class.

Create a Tool Router session

# Create a Digicert Tool Router session
session = composio.create(
    user_id=user_id,
    toolkits=["digicert"]
)

mcp_url = session.mcp.url

What is happening:

  • You give the Tool Router the user id and the toolkits you want available. Here, it is only digicert.
  • The router checks the user's Digicert connection and prepares the MCP endpoint.
  • The returned session.mcp.url is the MCP URL that your agent will use to access Digicert.
  • This approach keeps things lightweight and lets the agent request Digicert tools only when needed during the conversation.

Configure the agent

# Configure agent with MCP tool
agent = Agent(
    name="Assistant",
    model="gpt-5",
    instructions=(
        "You are a helpful assistant that can access Digicert. "
        "Help users perform Digicert operations through natural language."
    ),
    tools=[
        HostedMCPTool(
            tool_config={
                "type": "mcp",
                "server_label": "tool_router",
                "server_url": mcp_url,
                "headers": {"x-api-key": api_key},
                "require_approval": "never",
            }
        )
    ],
)
What's happening:
  • We're creating an Agent instance with a name, model (gpt-5), and clear instructions about its purpose.
  • The agent's instructions tell it that it can access Digicert and help with queries, inserts, updates, authentication, and fetching database information.
  • The tools array includes a HostedMCPTool that connects to the MCP server URL we created earlier.
  • The headers dict includes the Composio API key for secure authentication with the MCP server.
  • require_approval: 'never' means the agent can execute Digicert operations without asking for permission each time, making interactions smoother.

Start chat loop and handle conversation

print("\nComposio Tool Router session created.")

chat_session = SQLiteSession("conversation_openai_toolrouter")

print("\nChat started. Type your requests below.")
print("Commands: 'exit', 'quit', or 'q' to end\n")

async def main():
    try:
        result = await Runner.run(
            agent,
            "What can you help me with?",
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")
    except Exception as e:
        print(f"Error: {e}\n")

    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit", "q"}:
            print("Goodbye!")
            break

        result = await Runner.run(
            agent,
            user_input,
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")

asyncio.run(main())
What's happening:
  • The program prints a session URL that you visit to authorize Digicert.
  • After authorization, the chat begins.
  • Each message you type is processed by the agent using Runner.run().
  • The responses are printed to the console, and conversations are saved locally using SQLite.
  • Typing exit, quit, or q cleanly ends the chat.

Complete Code

Here's the complete code to get you started with Digicert and OpenAI Agents SDK:

import asyncio
import os
from dotenv import load_dotenv

from composio import Composio
from composio_openai_agents import OpenAIAgentsProvider
from agents import Agent, Runner, HostedMCPTool, SQLiteSession

load_dotenv()

api_key = os.getenv("COMPOSIO_API_KEY")
user_id = os.getenv("USER_ID")

if not api_key:
    raise RuntimeError("COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key")

# Initialize Composio
composio = Composio(api_key=api_key, provider=OpenAIAgentsProvider())

# Create Tool Router session
session = composio.create(
    user_id=user_id,
    toolkits=["digicert"]
)
mcp_url = session.mcp.url

# Configure agent with MCP tool
agent = Agent(
    name="Assistant",
    model="gpt-5",
    instructions=(
        "You are a helpful assistant that can access Digicert. "
        "Help users perform Digicert operations through natural language."
    ),
    tools=[
        HostedMCPTool(
            tool_config={
                "type": "mcp",
                "server_label": "tool_router",
                "server_url": mcp_url,
                "headers": {"x-api-key": api_key},
                "require_approval": "never",
            }
        )
    ],
)

print("\nComposio Tool Router session created.")

chat_session = SQLiteSession("conversation_openai_toolrouter")

print("\nChat started. Type your requests below.")
print("Commands: 'exit', 'quit', or 'q' to end\n")

async def main():
    try:
        result = await Runner.run(
            agent,
            "What can you help me with?",
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")
    except Exception as e:
        print(f"Error: {e}\n")

    while True:
        user_input = input("You: ").strip()
        if user_input.lower() in {"exit", "quit", "q"}:
            print("Goodbye!")
            break

        result = await Runner.run(
            agent,
            user_input,
            session=chat_session
        )
        print(f"Assistant: {result.final_output}\n")

asyncio.run(main())

Conclusion

This was a starter code for integrating Digicert MCP with OpenAI Agents SDK to build a functional AI agent that can interact with Digicert.

Key features:

  • Hosted MCP tool integration through Composio's Tool Router
  • SQLite session persistence for conversation history
  • Simple async chat loop for interactive testing
You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.

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FAQ

What are the differences in Tool Router MCP and Digicert MCP?

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

Can I use Tool Router MCP with OpenAI Agents SDK?

Yes, you can. OpenAI Agents SDK 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 Digicert tools.

Can I manage the permissions and scopes for Digicert while using Tool Router?

Yes, absolutely. You can configure which Digicert 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 Digicert data and credentials are handled as safely as possible.

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Context
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HubSpot
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DataStax
Entelligence
Rolai

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