How to integrate Persona MCP with Codex

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Introduction

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

Composio removes the Authentication handling completely from you. We handle the entire integration lifecycle, and all you need to do is just copy the URL below, authenticate inside Codex, and start using it.

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 870+ 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 Persona MCP in Codex

Codex CLI

Run the command in your terminal.

Terminal

This will auto-redirect you to the Rube authentication page.

Rube authentication redirect page

Once you're authenticated, you will be able to access the tools.

Verify the installation by running:

codex mcp list

If you otherwise prefer to use config.toml, add the following URL to it. You can get the bearer token from rube.app → Use Rube → MCP URL → Generate token

[projects."/home/user/composio"]
trust_level = "untrusted"

[mcp_servers.rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"

Codex in VS Code

If you have installed Codex in VS Code.

Then: ⚙️ → MCP Settings → + Add servers → Streamable HTTP:

Add the Rube MCP URL: https://rube.app/mcp and the bearer token.

VS Code MCP Settings

To verify, click on the Open config.toml

Open config toml in Codex

Make sure it's there:

[mcp_servers.composio_rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
Codex App MCP Settings
  1. Restart and verify if it's there in .codex/config.toml
[mcp_servers.composio_rube]
bearer_token_env_var = "your bearer token"
enabled = true
url = "https://rube.app/mcp"
  1. Save, restart the extension, and start working.

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

The Persona MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Persona account. It provides structured and secure access so your agent can perform Persona operations on your behalf.

Supported Tools & Triggers

Tools
Add Tag to AccountTool to add a tag to an Account in Persona.
Archive Browser Fingerprint List ItemTool to archive a browser fingerprint list item in Persona.
Archive Country List ItemTool to archive a Country List Item by ID.
Archive a Geolocation List ItemTool to archive a geolocation list item from Persona.
Archive Government ID Number List ItemTool to archive a Government ID Number List Item.
Archive a Name List ItemTool to archive a name list item in Persona.
Archive a webhookTool to archive a Persona webhook by its ID.
Archive Email Address List ItemTool to archive an Email Address List Item in Persona.
Archive IP Address List ItemTool to archive an IP address list item in Persona.
Archive Phone Number List ItemTool to archive a phone number list item in Persona.
Archive String List ItemTool to archive a String List Item in Persona.
Clone WebhookTool to clone an existing Persona webhook.
Consolidate AccountsTool to consolidate multiple source accounts into a single destination account.
Create an AccountTool to create an account in Persona.
Create IP Address List ItemTool to create an IP Address List Item in Persona.
Create Country List ItemTool to create a country list item in Persona.
Create Generic DocumentTool to create a generic document in Persona.
Create Email Address List ItemTool to create an email address list item in Persona.
Create Government ID Number List ItemTool to create a new government ID number list item in Persona.
Create Name List ItemTool to create a new name list item in Persona.
Create Phone Number List ItemTool to create a phone number list item in Persona.
Create String List ItemTool to create a String List Item in Persona.
Create WebhookTool to create a new webhook in Persona.
Disable WebhookTool to disable a webhook in Persona.
Enable WebhookTool to enable a webhook in Persona.
Expire Inquiry SessionsTool to expire all inquiry sessions for specified inquiry IDs.
Import Email Address ListsTool to import email addresses into a list from a CSV file.
Import IP Address ListsTool to import IP address lists into Persona.
Import Name ListsTool to import name lists to Persona.
Import Phone Number ListsTool to import phone number lists into Persona.
List All AccountsTool to list all accounts in Persona.
List All API LogsTool to list all API logs in Persona.
List All CasesTool to list all cases in Persona.
List All DevicesTool to list all devices filtered by inquiry session ID.
List all EventsTool to list all events from Persona.
List all ImportersTool to list all importers in Persona.
List All InquiriesTool to list all inquiries in Persona.
List All Inquiry SessionsTool to list all inquiry sessions in Persona.
List All ListsTool to list all lists in Persona.
List All Rate LimitsTool to list all rate limits in Persona.
List All ReportsTool to list all reports in Persona.
List All TransactionsTool to list all transactions in Persona.
List All WebhooksTool to list all webhooks in Persona.
List all Workflow RunsTool to list all workflow runs in Persona.
Redact an AccountTool to permanently redact an account in Persona.
Remove Account TagTool to remove a tag from a Persona Account.
Retrieve a Country List ItemTool to retrieve a country list item by ID in Persona.
Retrieve a Geolocation List ItemTool to retrieve a geolocation list item from Persona.
Retrieve an AccountTool to retrieve an account in Persona.
Retrieve a Name List ItemTool to retrieve a Name List Item in Persona.
Retrieve an EventTool to retrieve an event in Persona.
Retrieve an ImporterTool to retrieve a specific importer in Persona.
Retrieve IP Address List ItemTool to retrieve an IP Address List Item in Persona.
Retrieve an API LogTool to retrieve an API log in Persona.
Retrieve a String List ItemTool to retrieve a string list item by ID in Persona.
Retrieve a WebhookTool to retrieve a webhook by its ID.
Retrieve Browser Fingerprint List ItemTool to retrieve a browser fingerprint list item in Persona.
Retrieve a DocumentTool to retrieve a document from Persona.
Retrieve Generic DocumentTool to retrieve a generic document in Persona.
Retrieve Email Address List ItemTool to retrieve an Email Address List Item in Persona.
Retrieve Government ID Number List ItemTool to retrieve a Government ID Number List Item in Persona.
Retrieve Phone Number List ItemTool to retrieve a phone number list item in Persona.
Rotate Webhook SecretTool to rotate a webhook's secret in Persona.
Search AccountsTool to search accounts in Persona using flexible query criteria.
Search CasesTool to search cases in Persona using advanced query filters with boolean logic.
Set Tags on AccountTool to set tags on a Persona Account.
Update an AccountTool to update an account in Persona.
Update a WebhookTool to update a webhook in Persona.
Update Generic DocumentTool to update a generic document in Persona.

Conclusion

You've successfully integrated Persona with Codex using Composio's Rube MCP server. Now you can interact with Persona 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 Persona operations
  • Managed authentication through Composio's Rube
  • Access to 20,000+ tools across 870+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

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

How to build Persona MCP Agent with another framework

OpenAI Agents SDK

OpenAI Agents SDK

Use Persona MCP with OpenAI Agents SDK

Claude Agent SDK

Claude Agent SDK

Use Persona MCP with Claude Agent SDK

Google ADK

Google ADK

Use Persona MCP with Google ADK

LangChain

LangChain

Use Persona MCP with LangChain

Vercel AI SDK

Vercel AI SDK

Use Persona MCP with Vercel AI SDK

Mastra AI

Mastra AI

Use Persona MCP with Mastra AI

LlamaIndex

LlamaIndex

Use Persona MCP with LlamaIndex

CrewAI

CrewAI

Use Persona MCP with CrewAI

Claude Code

Claude Code

Use Persona MCP with Claude Code

FAQ

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

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

Can I use Tool Router MCP with Codex?

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 Persona tools.

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

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

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