How to integrate Simplesat 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 Simplesat MCP integration, you can draft, triage, summarise emails, and much more, all without leaving the terminal or the app, whichever you prefer.

Also integrate Simplesat 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 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 Simplesat 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 connect.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 Simplesat MCP server, and what's possible with it?

The Simplesat MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Simplesat account. It provides structured and secure access to your customer feedback platform, so your agent can perform actions like managing customer records, updating team members, streamlining survey workflows, and keeping your feedback data consistent.

  • Automated customer record management: Easily create new customers or update existing customer details in Simplesat using only an email address—no manual entry needed.
  • Seamless team member administration: Add new team members or update their information, including names, roles, and contact details, without digging through the Simplesat dashboard.
  • Synchronize CRM data with Simplesat: Keep your customer and team member lists up to date by letting your agent push changes from your CRM or helpdesk directly into Simplesat.
  • Bulk onboarding and updates: Efficiently onboard new team members or migrate customer data in bulk by automating repetitive record creation or updates.

Supported Tools & Triggers

Tools
Create or Update CustomerThis tool creates or updates a customer in simplesat.
Create or Update Team MemberThis tool creates a new team member or updates an existing one if a team member with the same email address is found.

Conclusion

You've successfully integrated Simplesat with Codex using Composio's MCP server. Now you can interact with Simplesat 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 Simplesat operations
  • Managed authentication through Composio
  • 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 Simplesat operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities

How to build Simplesat MCP Agent with another framework

FAQ

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

With a standalone Simplesat MCP server, the agents and LLMs can only access a fixed set of Simplesat tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Simplesat 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 Simplesat tools.

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

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

Used by agents from

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Context
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glean
HubSpot
Agent.ai
Altera
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Context
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glean
HubSpot
Agent.ai
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Never worry about agent reliability

We handle tool reliability, observability, and security so you never have to second-guess an agent action.