How to integrate Fairing MCP with Codex

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

Fairing logoFairing
Api Key

Fairing is a post-purchase survey and attribution platform for ecommerce brands. It helps teams measure which marketing channels, campaigns, and customer touchpoints drive purchases.

2 Tools

Introduction

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

Also integrate Fairing 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 Fairing 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 Fairing MCP server, and what's possible with it?

The Fairing MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Fairing account. It provides structured and secure access to your post-purchase survey questions and responses, so your agent can review questions, inspect targeting rules, retrieve responses, filter feedback, and sort survey results on your behalf.

  • Survey question review: Have your agent list every question in your Fairing survey to help you understand what customers are being asked.
  • Question targeting checks: Let the agent include targeting rules when reviewing questions, so you can see which customers each question is meant to reach.
  • Response retrieval: Direct your agent to fetch post-purchase survey responses for review and marketing attribution analysis.
  • Focused feedback filtering: Instruct your agent to narrow responses by survey question or time window, then sort the results to match your analysis needs.

Conclusion

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

Supported Tools

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

List Questions

Return the connected shop's complete Fairing question stream, optionally including targeting rules.

List Responses

Return one page of the connected shop's survey responses, with optional question, time-window, and sort filters.

FAQ

Frequently asked questions

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

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

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