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How to connect Cardly to Claude

Connect Claude Web, Desktop and Cowork to Cardly MCP. Create a new contact list named 'vip clients', list all available artwork for our next campaign, and more using natural language, with authentication handled for you.

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Cardly is a platform for creating and sending personalized direct mail to customers. It helps businesses break through the digital clutter by getting real engagement via physical mailboxes.

29 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 Cardly account to Claude via Composio Connect, enabling it to create a new contact list named 'VIP Clients', list all available artwork for our next campaign, generate a preview of a card using latest artwork, 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 Cardly with

Claude CodeOpenAI Agents SDKClaude Agent SDKCodexOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Connecting Cardly 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 Cardly account

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

For example, ask Claude to:

  • "Create a new contact list named 'VIP Clients'"
  • "List all available artwork for our next campaign"
  • "Generate a preview of a card using latest artwork"

It will prompt you to authenticate and authorize access.

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

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

The Cardly MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Cardly account. It provides structured and secure access to your Cardly workspace, so your agent can create contact lists, generate card previews, manage invitations, and access artwork or credit history for seamless customer engagement tasks.

  • Automated contact list creation and management: Easily instruct your agent to set up new contact lists or manage existing ones, streamlining outreach campaigns and personalized mailings.
  • Card preview generation and artwork browsing: Let your agent generate watermarked card previews and browse available artwork to help you select the right designs before sending mailers.
  • Real-time credit and gift history access: Ask your agent to fetch your credit or gift credit history so you always know your account status and can track usage or plan new campaigns.
  • Invitation and webhook management: Direct your agent to handle invitations—listing, deleting, or auditing user invites—or manage webhooks for seamless integration with other systems.
  • Font and design asset exploration: Have your agent list available fonts and artwork, making it easier to choose creative assets for your next customer engagement initiative.

Troubleshooting

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

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

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

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

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

  • 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 Cardly.
  • If it fails again, send the error and the ofid_ reference id to support@composio.dev.

3. Why does the Cardly authorization link not work?

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

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

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

The Cardly connection can expire or lose permission.

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

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

Claude can manage the Cardly connection for you.

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

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

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

  • In Claude Desktop, open Customize > Connectors.
  • Next to Composio, click ⋮ and click Clear cache.
  • If Cardly 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 Cardly.
TOOLS

Supported Tools

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

Create Contact List

Tool to add a new contact list.

Create Invitation

Tool to send an invitation to use your organisation portal.

Create Webhook

Tool to create a new webhook subscription.

Delete Invitation

Tool to delete an invitation by unique ID, immediately invalidating it for acceptance.

Delete Invitation by Email

Deletes a pending invitation by email address, immediately invalidating it and preventing acceptance.

Delete User

Tool to delete a user by unique ID, immediately revoking their access to your organisation portal.

Delete User by Email

Deletes a user by email address, immediately revoking their access to your organisation portal.

Delete Webhook

Tool to delete a webhook.

Echo Request

Tool to echo all request parameters, body, and headers for debugging purposes.

Generate Preview

Tool to generate a low-quality, watermarked preview document for a card.

Get Artwork

Tool to retrieve information on a specific piece of artwork by its unique ID.

Get Webhook

Tool to get details on an existing webhook.

List Artwork

Tool to retrieve the currently available artwork for your organisation.

List Contact Lists

Tool to retrieve all active contact lists for your organization.

List Credit History

Retrieves the account's credit transaction history showing all credits and debits.

List Doodles

Retrieve your currently available doodles from Cardly.

List Fonts

List available fonts for handwriting and text personalization in Cardly cards.

List Gift Credit History

Lists gift credit history records for your organization with pagination and optional time-based filtering.

List Invitations

Tool to retrieve active invitations for your organisation with optional filters.

List Media

Tool to retrieve the currently available media sizes for product artwork.

List Orders

Retrieves a paginated list of orders placed by your organization.

List Templates

Tool to retrieve your currently available templates from Cardly.

List Users

Tool to retrieve all users associated with your account.

List Webhooks

Retrieves all webhooks configured for your organization, including their status, target URLs, subscribed events, and delivery statistics.

List Writing Styles

Tool to list available writing styles.

Retrieve Account Balance

Tool to retrieve the current account and gift credit balances for your organisation.

Retrieve Order

Retrieves detailed information about a specific order by its ID.

Retrieve User

Retrieves detailed information about a specific user account by ID.

Update Webhook

Tool to update a webhook’s settings, including target URL and events.

FRAMEWORKS

How to build Cardly MCP Agent with another framework

Claude Code logo

Claude Code

Use Cardly MCP with Claude Code

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Cardly MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Cardly MCP with Claude Agent SDK

Codex logo

Codex

Use Cardly MCP with Codex

OpenClaw logo

OpenClaw

Use Cardly MCP with OpenClaw

Hermes logo

Hermes

Use Cardly MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Cardly MCP with Atomic Agent

Google ADK logo

Google ADK

Use Cardly MCP with Google ADK

LangChain logo

LangChain

Use Cardly MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Cardly MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Cardly MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Cardly MCP with LlamaIndex

CrewAI logo

CrewAI

Use Cardly MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Cardly MCP with Pydantic AI

AutoGen logo

AutoGen

Use Cardly MCP with AutoGen

FAQ

Frequently asked questions

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

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

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