How to integrate Instacart MCP with Codex

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

Instacart logoInstacart
No Auth

Instacart is an online grocery delivery and pickup service platform. It lets you discover local retailers and create shoppable lists and recipes with ease.

4 Tools

Introduction

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

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

The Instacart MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to Instacart's shopping and recipe platform. It provides structured and secure access to Instacart's APIs, so your agent can create shoppable lists, generate recipe pages, and discover nearby retailers on your behalf.

  • Instant shoppable list creation: Ask your agent to generate a shareable Instacart shopping list page from a set of grocery items or meal plans.
  • Recipe page generation: Have your agent create a recipe page on Instacart, complete with a unique URL for easy sharing and shopping.
  • Nearby retailer discovery: Let your agent find available Instacart retailers in your area based on postal code and country code, so you always know where to shop.
  • Shareable shopping experiences: Generate URLs for both shopping lists and recipes, making it simple to share curated grocery plans with friends, family, or colleagues.

Conclusion

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

Supported Tools

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

Create Instacart Recipe Link

Create an Instacart link to the shopping list of ingredients for a recipe.

Create Recipe Page

Create a shareable recipe page on Instacart and return the URL.

Create Shopping List Page

Create a shareable Shopping List Page on Instacart.

Get Nearby Retailers

Retrieves a list of grocery retailers available for delivery or pickup in a given postal code area.

FAQ

Frequently asked questions

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

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

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