How to integrate Instacart MCP with Atomic Agent

Connect Atomic Agent to Instacart MCP. Create a shoppable recipe page for lasagna, generate a grocery list for a vegan dinner, and more using natural language, with authentication handled for you.

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

Atomic Agent is an open-source AI agent that runs on your machine and supports local models through llama.cpp. Connect it to 1,500+ apps through Composio, including Instacart.

This guide uses Atomic Agent's built-in Composio integration. You need Atomic Agent v0.5.6 or later, your own Composio API key, and a Instacart account. See the Atomic Agent documentation for installation instructions.

Also integrate Instacart with

How Atomic Agent connects to Instacart

Atomic Agent connects to Composio's Tool Router over Streamable HTTP MCP. It discovers the tools needed for your request, and Composio handles account authentication.

Execution and account-connection tools follow Atomic Agent's configured approval policy. Review any approval prompt before allowing an action on your connected account.

Connect Instacart to Atomic Agent

  1. Sign up or sign in to the Composio dashboard. Copy your API key.
  2. In Atomic Agent, open the Integrations tab and select Composio. Select API key, press e, paste the key, and press Enter. The tools become available immediately, without a restart.
  3. Ask Atomic Agent to do something in Instacart. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Instacart account, then return to Atomic Agent to continue.

Headless setup

Add the following line to ~/.atomic-agent/.env, replacing YOUR_COMPOSIO_API_KEY with your key. Start Atomic Agent after saving the file.

bash
COMPOSIO_API_KEY=YOUR_COMPOSIO_API_KEY

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.

Use Instacart from Atomic Agent

With your account connected, ask Atomic Agent to work with Instacart in natural language. You can connect more apps through the same Composio integration as you need them.

Visit the Atomic Agent website or inspect the Atomic Agent source code.

Troubleshooting

Why is my API key rejected?

Copy the key directly from the Composio dashboard. Atomic Agent requires ASCII characters because it sends the key in an HTTP header. Remove any extra characters introduced when copying.

Why are Composio tools unavailable after saving a key?

Check that you use Atomic Agent v0.5.6 or later and that Composio is enabled in your configuration. A "composio": { "enabled": false } setting disables the integration while keeping the saved key on disk.

Does Composio have a free plan?

The Hobby plan includes 100,000 tool calls per month. Composio-managed OAuth apps have a lower included allowance. See Composio pricing for the current limits that apply to your connection.

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. Atomic Agent 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.

Start with Instacart.It takes 30 seconds.

Managed auth, hosted MCP servers, and every Instacart tool your agent needs.Free to start.

Start building