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How to connect Laposta to Claude

Connect Claude Web, Desktop and Cowork to Laposta MCP. Add subscriber to laposta list by email, send campaign to "monthly updates" group, and more using natural language, with authentication handled for you.

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Laposta is a Dutch newsletter platform for creating and sending professional newsletters. It makes email marketing simple and efficient for teams and businesses.

24 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 Laposta account to Claude via Composio Connect, enabling it to add subscriber to Laposta list by email, send campaign to "Monthly Updates" group, get open rates for last Laposta campaign, 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 Laposta with

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

Connecting Laposta 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 Laposta account

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

For example, ask Claude to:

  • "Add subscriber to Laposta list by email"
  • "Send campaign to "Monthly Updates" group"
  • "Get open rates for last Laposta campaign"

It will prompt you to authenticate and authorize access.

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

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

The Laposta MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Laposta account. It provides structured and secure access so your agent can perform Laposta operations on your behalf.

Troubleshooting

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

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

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

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

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

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

3. Why does the Laposta authorization link not work?

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

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

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

The Laposta connection can expire or lose permission.

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

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

Claude can manage the Laposta connection for you.

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

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

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

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

Supported Tools

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

Get All Campaigns

Tool to retrieve all campaigns from Laposta account.

Create Custom Field

Tool to create a custom field for a mailing list to define subscriber attributes.

Delete Field

Tool to permanently remove a custom field from a mailing list.

Get Field Details

Tool to retrieve specific field details by field_id.

Get All Fields

Tool to retrieve all fields for a specific list in Laposta.

Update Field

Tool to modify field configuration in a Laposta list.

Clear All Members From List

Tool to clear all active members from a list.

Create Mailing List

Tool to create a new mailing list in Laposta to manage email subscribers.

Delete List

Tool to permanently remove a mailing list from Laposta.

Get List Details

Tool to retrieve specific list details by list_id.

Get All Lists

Tool to retrieve all mailing lists from your Laposta account.

Update Mailing List

Tool to modify list properties such as name, remarks, or notification emails.

Create Member

Tool to add a new subscriber relationship to a list with custom fields and tracking info.

Delete Member

Tool to permanently remove a member from a list.

Get Member

Tool to retrieve specific member details by member_id or email.

Get All Members

Tool to retrieve all members from a specified Laposta mailing list.

Update Member

Tool to modify member data, status, or custom fields in a Laposta list.

Get All Campaign Reports

Tool to retrieve performance metrics for all campaigns.

Get All Segments

Tool to retrieve all segments from a mailing list.

Create Webhook

Tool to register a new webhook for list events in Laposta.

Delete Webhook

Tool to permanently remove a webhook.

Get Webhook Details

Tool to retrieve specific webhook details by webhook_id.

Get All Webhooks

Tool to retrieve all webhooks for a specific list.

Update Webhook

Tool to modify webhook configuration including URL, event type, or blocked status.

FRAMEWORKS

How to build Laposta MCP Agent with another framework

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Laposta MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Laposta MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Laposta MCP with Claude Code

Codex logo

Codex

Use Laposta MCP with Codex

OpenClaw logo

OpenClaw

Use Laposta MCP with OpenClaw

Hermes logo

Hermes

Use Laposta MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Laposta MCP with Atomic Agent

Google ADK logo

Google ADK

Use Laposta MCP with Google ADK

LangChain logo

LangChain

Use Laposta MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Laposta MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Laposta MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Laposta MCP with LlamaIndex

CrewAI logo

CrewAI

Use Laposta MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Laposta MCP with Pydantic AI

AutoGen logo

AutoGen

Use Laposta MCP with AutoGen

FAQ

Frequently asked questions

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

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

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