How to integrate Classmarker MCP with Codex

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Classmarker MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

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Api Key

ClassMarker is a professional online quiz maker for business and education. It provides instant grading, flexible test design, and in-depth reporting.

28 Tools

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With Classmarker MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Classmarker with

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 1000+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Classmarker MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

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

The Classmarker MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Classmarker account. It provides structured and secure access to your quiz management tools, so your agent can create tests, manage users and groups, add questions, and control access codes—without manual intervention.

  • Automated user and group management: Let your agent create new users, add them to groups, or delete users and groups for streamlined participant organization.
  • Dynamic question and category creation: Instruct your agent to add new questions or categories to your exams, helping you build tests faster and keep content organized.
  • Access code and permissions control: Enable your agent to generate, assign, or delete access codes for specific exams, giving or revoking test access instantly as needed.
  • Test link and API key management: Allow your agent to manage test links or revoke API keys to maintain secure and up-to-date exam distribution.
  • Efficient data cleanup: Ask your agent to remove users, groups, test links, or access codes, keeping your Classmarker account tidy and up to date with minimal effort.

Conclusion

You've successfully integrated Classmarker with Codex using Composio's MCP server. Now you can interact with Classmarker directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Classmarker operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1000+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Classmarker operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

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

Create Access List Item

Tool to add one or more access codes to an access list.

Create a new question category

Tool to create a new question category.

Create Group

Tool to create a new group.

Create Question

Tool to create a new question with specified text, type, and category in ClassMarker.

Create ClassMarker User

Tool to create a new user in ClassMarker.

Delete Access List Item

Removes one or more access codes from a ClassMarker access list.

Delete API Key

Tool to delete an API key by its ID.

Delete Group

Tool to delete a group by its ID.

Delete Test Link

Deletes a specific link assignment from a test/exam in ClassMarker.

Delete User

Tool to delete a specific user by ID.

Delete Webhook

Deletes a webhook listener from your ClassMarker account.

Get Group Details

Retrieve detailed information about a specific group by ID.

Get Initial Finished After Timestamp

Compute the initial finishedAfterTimestamp for paginating ClassMarker test results.

Get Question

Tool to retrieve a specific question by its ID.

Get Recent Results For Group Exam

Tool to fetch recent test results for a specific group and exam.

Get Recent Results Link Exam

Fetch recent exam results for a specific link and test combination.

Get Test Details

Retrieves detailed information for a specific test (exam) including its name and all assignment contexts.

Get User Details

Tool to retrieve detailed information about a specific user.

List Question Categories

Retrieves all question categories organized in a hierarchical structure.

List Certificates

Tool to list all certificates.

List Questions

Retrieve a paginated list of questions from your question bank.

List Recent Results For Groups

Retrieve recent exam results for all groups in your ClassMarker account.

List Recent Results for Links

Retrieves recent test results from ALL links accessible to your API key.

List Users

Tool to list all users.

List Webhooks

Tool to retrieve all configured webhooks.

Update Sub-Category

Tool to update an existing sub-category.

Update an existing parent category

Tool to update an existing parent category.

Update Question

Updates an existing question in the ClassMarker question bank.

FAQ

Frequently asked questions

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

Yes, you can. Codex 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 Classmarker tools.

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

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