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How to connect Moonclerk to Claude

Connect Claude Web, Desktop and Cowork to Moonclerk MCP. Show all active subscriptions from last month, list all payments received this week, and more using natural language, with authentication handled for you.

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MoonClerk is a platform for accepting recurring and one-time online payments. It helps businesses automate payment collection and manage customer billing with ease.

5 Tools

Introduction

Claude is Anthropic's AI assistant, available on the web, in the desktop app, and on mobile. Cowork is its agent for knowledge work, and it runs on all of those surfaces too. Connected to your apps, Claude can work with your files and services to accomplish complex tasks on your behalf.

This guide walks you through the easiest and most secure way to connect your Moonclerk account to Claude via Composio Connect, enabling it to show all active subscriptions from last month, list all payments received this week, find customers with active discounts, and more such actions on your behalf without compromising your account security.

Setup is the same on Claude Web, Desktop, and Cowork, and you only need to do it once. The connector is tied to your account, so it's available in all three.

Also integrate Moonclerk with

OpenAI Agents SDKClaude Agent SDKClaude CodeCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Moonclerk to Claude Web, Desktop, and Cowork

Two ways to add the Composio connector. Pick whichever you prefer.

1. Add with one click

Click the button. Claude opens with the Composio connector filled in. Click Add, then go to step 2.

Add to Claude

Add manually

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

2. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Web, Desktop, and Cowork

3. Connect your Moonclerk account

Back in Claude, ask it to connect to Moonclerk or give it any Moonclerk-related task.

For example, ask Claude to:

  • "Show all active subscriptions from last month"
  • "List all payments received this week"
  • "Find customers with active discounts"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Claude, and your Moonclerk account is ready to use.

What is the Moonclerk Claude Connector, and what's possible with it?

The Moonclerk MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Moonclerk account. It provides structured and secure access to your Moonclerk data, so your agent can perform actions like listing customers, tracking payments, reviewing subscriptions, and analyzing discounts on your behalf.

  • Comprehensive customer listing: Retrieve and filter your Moonclerk customer records, making it easy to access up-to-date client data and plan details.
  • Detailed payment tracking: Ask your agent to list all payments or filter them by form, customer, time frame, or payment status—perfect for quick financial overviews.
  • Subscription management and review: Effortlessly get a full rundown of all active, paused, or cancelled subscriptions associated with your business.
  • Payment form overview: Have your agent fetch a complete list of your payment forms, helping you audit, review, or analyze available checkout options in seconds.
  • Discount analytics: Instantly pull details on all discounts applied to customers, so you can monitor promotional effectiveness and customer engagement.

Troubleshooting

1. Why does Claude not use the Composio connector for Moonclerk?

The connector can show as connected, but Claude must use it in each Moonclerk conversation.

  • Click + at the lower left of the chat, or type /.
  • Hover Connectors.
  • Turn on Composio.
  • Ask Claude to connect to Moonclerk again.

2. Why does Claude show an MCP server error before Moonclerk connects?

Claude can show Couldn't reach the MCP server or Authorization with the MCP server failed when you add the connector for Moonclerk.

  • Check that the connector URL is https://connect.composio.dev/mcp.
  • Connectors run from Anthropic's cloud, so your device network is usually not the problem.
  • Add the connector again from Customize > Connectors, then ask Claude to connect Moonclerk.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Moonclerk authorization link not work?

The Composio connector is one server. Your Moonclerk account connects separately when Claude asks for it.

  • If the browser does not open, or the link expires, ask Claude to retry the Moonclerk connection.
  • Composio creates a fresh Moonclerk authorization link.
  • Open that link in your browser and finish the Moonclerk sign-in.

4. Why do Moonclerk actions fail after they worked before?

The Moonclerk connection can expire or lose permission.

  • Ask Claude to inspect the Moonclerk connection.
  • If the connection is unhealthy, disconnect it when Claude prompts you.
  • Reconnect the Moonclerk account and retry the action.
  • If Claude shows a permission prompt, approve it before Claude changes data in Moonclerk.
  • If the action still fails with a permission error, check that the connected account has that permission in Moonclerk itself.

5. How do I switch to a different Moonclerk account?

Claude can manage the Moonclerk connection for you.

  • Ask Claude to disconnect or delete the current Moonclerk account.
  • Ask Claude to connect Moonclerk again.
  • Open the new Composio authorization link for Moonclerk.
  • Sign in with the other Moonclerk account in the browser.
  • After the account connects, ask Claude to retry the Moonclerk task.

6. Why is my Moonclerk connection missing in Claude Desktop or on a Team plan?

The connector belongs to your Claude account, so your Moonclerk connection works in Claude Web, Desktop, and Cowork.

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Moonclerk tools still do not appear, click ⋮, disconnect, remove the connector, and add it again.
  • On Team or Enterprise, an Owner or Primary Owner must enable the connector before you can connect Moonclerk.
TOOLS

Supported Tools

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

List Customers

Tool to list customers (plans) from MoonClerk.

List Discounts

Tool to retrieve a list of all discounts applied to customers.

List Payment Forms

Tool to retrieve a list of all payment forms.

List Payments

Tool to list payments.

List Subscriptions

Tool to list subscriptions.

FRAMEWORKS

How to build Moonclerk MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Moonclerk MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Moonclerk MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Moonclerk MCP with Claude Code

Codex logo

Codex

Use Moonclerk MCP with Codex

OpenClaw logo

OpenClaw

Use Moonclerk MCP with OpenClaw

Hermes logo

Hermes

Use Moonclerk MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Moonclerk MCP with Atomic Agent

Google ADK logo

Google ADK

Use Moonclerk MCP with Google ADK

LangChain logo

LangChain

Use Moonclerk MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Moonclerk MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Moonclerk MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Moonclerk MCP with LlamaIndex

CrewAI logo

CrewAI

Use Moonclerk MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Moonclerk MCP with Pydantic AI

AutoGen logo

AutoGen

Use Moonclerk MCP with AutoGen

FAQ

Frequently asked questions

With a standalone Moonclerk MCP server, the agents and LLMs can only access a fixed set of Moonclerk tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Moonclerk and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. Claude Cowork 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 Moonclerk tools.

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

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