How to integrate Memberstack MCP with Atomic Agent

Connect Atomic Agent to Memberstack MCP. Add a new member with email and plan, list all members who joined this month, and more using natural language, with authentication handled for you.

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Api Key

Memberstack lets you add user authentication, payments, and member management to your website—no backend code required. Easily manage your site's members and subscriptions from a single platform.

8 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 Memberstack.

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 Memberstack account. See the Atomic Agent documentation for installation instructions.

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How Atomic Agent connects to Memberstack

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 Memberstack 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 Memberstack. It searches Composio for the right tool.
  4. On first use, open the sign-in link returned in the chat. Connect your Memberstack 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 Memberstack MCP server, and what's possible with it?

The Memberstack MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Memberstack account. It provides structured and secure access to your member management system, so your agent can perform actions like creating members, updating profiles, managing plans, and retrieving membership data on your behalf.

  • Automated member creation and onboarding: Instantly add new users to your platform with customizable fields, plans, and metadata—no manual input needed.
  • Profile updates and member management: Let your agent update member details, modify custom fields, or change emails and metadata as your users grow or their needs change.
  • Membership plan handling: Effortlessly list available plans, assign plans to members, or remove free plans when subscriptions change.
  • Member lookup and insights: Retrieve individual member profiles by ID or email, or fetch a paginated list of all your members for deeper analysis and automation.
  • Secure member deletion: Ensure compliance and data hygiene by directing your agent to safely delete members who no longer require access.

Use Memberstack from Atomic Agent

With your account connected, ask Atomic Agent to work with Memberstack 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 Memberstack action and event your agent gets out of the box.

Create Member

Tool to create a new member in your application.

Delete Member

Tool to permanently delete a member from your application.

Get Member

Tool to retrieve a specific member by ID or email.

List Data Tables

Tool to retrieve all data tables in your Memberstack application.

List Members

Tool to retrieve a paginated list of all members in your application.

List Plans

Tool to list all available membership plans.

Remove Free Plan

Tool to remove a free plan from an existing member.

Update Member

Tool to update an existing member's information.

FAQ

Frequently asked questions

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

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

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