How to integrate Customgpt MCP with Codex

Connect Codex to Customgpt MCP. List all your active customgpt projects, show chat history from your latest conversation, and more using natural language, with authentication handled for you.

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CustomGPT.ai lets you build and deploy chatbots tailored to your own data and business needs. Get precise and context-aware AI conversations without writing code.

40 Tools

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With the Customgpt MCP integration, Codex can create and update agent projects, add data sources, start conversations, review conversation analytics, and verify answer accuracy, all without leaving the terminal or the app, whichever you prefer.

For exact tool slugs and parameter tables, see the tool catalog in the Composio docs.

Also integrate Customgpt 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 1700+ 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 Customgpt 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_*******" }

Try it

Ask Codex for a Customgpt task. The first time, Composio asks you to connect your Customgpt account.

For example, ask it to:

  • "List all your active CustomGPT projects"
  • "Show chat history from your latest conversation"
  • "Get usage limits for your account"

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

The Customgpt MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your CustomGPT.ai account. It provides structured and secure access to your chatbot projects, so your agent can list, manage, update, and analyze your AI-powered chatbots and their licenses on your behalf.

  • Project and agent management: Effortlessly list all your CustomGPT projects, retrieve their details, and even delete agents you no longer need.
  • Comprehensive license handling: Let your agent fetch, update, or remove licenses attached to any of your chatbot projects, ensuring you always have the right access and compliance.
  • Chat conversation insights: Retrieve complete chat histories from your AI chatbot conversations to analyze user interactions or debug sessions.
  • User profile and usage monitoring: Automatically fetch your account profile and check on your usage limits, including agents, words, and queries, so you never exceed your quotas.
  • Project settings inspection: Quickly pull and review configuration details for any chatbot project to audit or adjust your bot's setup.

Conclusion

You've successfully integrated Customgpt with Codex using Composio's MCP server. Now you can interact with Customgpt 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 Customgpt operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1700+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

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

Supported Tools

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

Activate Persona Version

Restore a previous persona version for a CustomGPT agent.

Add Source to Project

Add a data source to a CustomGPT agent's knowledge base using a sitemap URL or file upload.

Clone CustomGPT Project

Tool to clone a CustomGPT agent (project).

Create Conversation

Tool to create a new conversation session for a CustomGPT agent.

Create CustomGPT Project

Create a new CustomGPT agent from either a sitemap URL or a file upload.

Delete Page from Agent

Tool to delete a document from a CustomGPT agent's knowledge base.

Delete CustomGPT Project

Tool to delete a CustomGPT project by ID.

Delete CustomGPT Project License

Delete a license from a CustomGPT project or agent using its numeric project ID and license ID.

Delete CustomGPT Source

Tool to delete a data source from a CustomGPT agent.

Export Leads

Export leads from a CustomGPT project.

Get Message

Tool to get message details from a CustomGPT conversation.

Get Message Trust Score

Retrieves verification trust assessment data for a message in a CustomGPT conversation.

Get Page Metadata

Tool to get document metadata including title, source URL, word count, and custom metadata fields.

Get Agent Plugins

Retrieves plugin details for a specific CustomGPT agent, including configuration, status, and metadata.

Get CustomGPT Project

Get details for a specific CustomGPT agent, including its status and metadata such as ownership, sharing, sitemap, and embed information.

Get Project License

Retrieve a license for a specific CustomGPT project by license ID.

Get Project Settings

Retrieves configuration settings for a CustomGPT agent, including avatar, background, prompt, language, and branding preferences.

Get Analytics Chart Data

Tool to retrieve analytics chart data for a CustomGPT project.

Get Conversation Analytics

Tool to get conversation analytics for a CustomGPT project.

Get Customer Intelligence Report

Tool to get customer intelligence for a CustomGPT project.

Get Traffic Analytics Report

Tool to retrieve traffic analytics for a CustomGPT agent/project.

Get Agent Statistics

Get usage and document statistics for a CustomGPT agent, including query counts, credits used, and pages found, crawled, and indexed.

Get Usage Limits

Get account usage and limits for projects, storage credits, and API queries.

Get Current User Profile

Tool to retrieve the current user's profile information.

List Conversation Messages

Retrieve messages from a CustomGPT conversation, including user queries and AI responses.

List Agent Documents

Lists documents in a CustomGPT agent's knowledge base, including webpages and uploaded files.

List Persona Versions

Tool to list persona versions for a CustomGPT agent.

List CustomGPT Project Licenses

List licenses for a CustomGPT project or agent using its numeric project ID.

List CustomGPT Projects

Lists all CustomGPT projects (agents) for the authenticated user.

List Agent Sources

Tool to list all data sources connected to an agent.

Reindex Page

Starts reindexing a URL-based document in a CustomGPT knowledge base to update its content.

Search Team Members

Tool to search for team members by email address or user ID.

Submit Message Feedback

Tool to submit feedback (thumbs up/down) for a message in a CustomGPT conversation.

Update Page Metadata

Updates metadata for a specific page in a CustomGPT project, including its title, description, URL, and image.

Update Project

Updates an existing CustomGPT agent's name or project configuration, including sharing, sitemap, license, and document-processing settings.

Update Project License

Updates the name of an existing license for a CustomGPT project/agent.

Update Project Settings

Update CustomGPT agent configuration settings.

Update Source Settings

Update settings for a CustomGPT agent data source, including auto-sync frequency, refresh behavior, JavaScript execution, image extraction, page creation and removal, and custom refresh schedules.

Update User Profile

Updates the authenticated user's profile information in CustomGPT.

Verify Message Accuracy

Trigger verification of a message in a CustomGPT conversation.

FAQ

Frequently asked questions

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