SIGN UPLOG IN
X (Twitter)LinkedInGitHubDiscordYouTube

How to integrate Lemlist MCP with Codex

Connect Codex to Lemlist MCP. Export all leads from current campaign, download list of unsubscribed emails, and more using natural language, with authentication handled for you.

Get started for freeGet a demo
Lemlist logoLemlist
Api Key

Lemlist is a multichannel prospecting platform for outreach via email, LinkedIn, and calls. It streamlines lead generation and boosts reply rates with personalized, automated workflows.

65 Tools

Introduction

Codex is one of the most popular coding harnesses out there. And MCP makes the experience even better. With the Lemlist MCP integration, Codex can create and pause campaigns, add leads to campaigns, track campaign stats, send inbox emails, and search the people database, all without leaving the terminal or the app, whichever you prefer.

For exact tool slugs and parameter tables, see the tool catalog in the Composio docs.

Also integrate Lemlist with

Claude CodeClaude CoworkOpenAI Agents SDKClaude Agent SDKOpenClawHermesAtomic AgentGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAIPydantic AIAutoGen

Why use Composio?

Apart from a managed and hosted MCP server, you will get:

  • CodeAct: A dedicated workbench that allows GPT to write its code to handle complex tool chaining. Reduces to-and-fro with LLMs for frequent tool calling.
  • Large tool responses: Handle them to minimise context rot.
  • Dynamic just-in-time access to 20,000 tools across 1700+ other Apps for cross-app workflows. It loads the tools you need, so GPTs aren't overwhelmed by tools you don't need.

How to install Lemlist MCP in Codex

Run the setup command

Run this command in your terminal to add the Composio MCP server to Codex.

Terminal

It will initiate the authentication in a browser window, authorize Codex to access your Composio account.

Composio authentication page

(Optional) Authenticate with OAuth

To authenticate manually, run the login command to open a browser window and authorize Codex to access your Composio account.

bash
codex mcp login composio

Verify the connection

Run codex mcp list to confirm Composio appears as a registered MCP server.

bash
codex mcp list

Codex App

Codex App follows the same approach as VS Code.

  1. Click ⚙️ on the bottom left → MCP Servers → + Add servers → Streamable HTTP:
  2. Fill the header and Key fields with { "x-consumer-api-key" = "ck_*******" }.
  3. The Key is the Composio API key, that you can find on dashboard.composio.dev
  4. Click on Authenticate and authorize Codex to your Composio account and you're all set.
Codex App MCP setup
  1. Restart and verify if it's there in .codex/config.toml
bash
[mcp_servers.composio]
url = "https://connect.composio.dev/mcp"
http_headers = { "x-consumer-api-key" = "ck_*******" }

Try it

Ask Codex for a Lemlist task. The first time, Composio asks you to connect your Lemlist account.

For example, ask it to:

  • "Export all leads from current campaign"
  • "Download list of unsubscribed emails"
  • "Unsubscribe specific lead from a campaign"

What is the Lemlist MCP server, and what's possible with it?

The Lemlist MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Lemlist account. It provides structured and secure access to your outreach campaigns, so your agent can manage leads, automate campaign exports, monitor unsubscribe lists, and orchestrate multichannel engagement on your behalf.

  • Automated campaign management: Retrieve campaign details by ID, audit campaign sequences, and start or monitor campaign exports for streamlined reporting and analytics.
  • Lead and subscriber control: Unsubscribe leads from campaigns, delete unsubscribed emails, or export detailed lists of campaign leads to keep your outreach data fresh and compliant.
  • Outreach data exports: Initiate and track asynchronous exports of campaign statistics or download CSVs of unsubscribed contacts for deeper insights and record-keeping.
  • Webhook administration: Fetch all configured webhooks to sync Lemlist with your other tools or audit integration points for better workflow automation.
  • Schedule management: Permanently delete schedules you no longer need, ensuring your campaigns stay organized and up to date.

Conclusion

You've successfully integrated Lemlist with Codex using Composio's MCP server. Now you can interact with Lemlist directly from your terminal, VS Code, or the Codex App using natural language commands.

Key benefits of this setup:

  • Seamless integration across CLI, VS Code, and standalone app
  • Natural language commands for Lemlist operations
  • Managed authentication through Composio
  • Access to 20,000+ tools across 1700+ apps for cross-app workflows
  • CodeAct workbench for complex tool chaining

Next steps:

  • Try asking Codex to perform various Lemlist operations
  • Explore cross-app workflows by connecting more toolkits
  • Build automation scripts that leverage Codex's AI capabilities
TOOLS

Supported Tools

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

Add Contacts To List

Add existing Lemlist contacts to a static contact list.

Create Company Note

Tool to create a note attached to a specific company.

Delete Schedule

Tool to delete a specific schedule by scheduleId.

Delete Unsubscribed Email

Tool to delete an email from the unsubscribed list.

Unsubscribe Lead From Campaign

Tool to unsubscribe a lead from a campaign.

Get All Webhooks

Retrieve the team's configured webhooks for synchronization or audit.

Get Campaign By ID

Tool to retrieve a specific campaign by campaignId.

Start Campaign Export

Tool to start an asynchronous export of all campaign statistics (CSV).

Get Campaign Export Status

Tool to check the status of an asynchronous campaign export.

Get Campaign Schedules

Retrieve all sending schedules associated with a campaign.

Get Campaign Sequences

Retrieve a campaign's sequences as a mapping keyed by sequence ID, including steps and branching conditions.

Get Campaign Stats

Tool to retrieve performance statistics for a specific campaign within a date range.

Get Companies Schema

Tool to retrieve the schema definition for companies in the people database.

Get Contact

Retrieve one Lemlist contact by contact ID or email address.

Get Contact Messages

Retrieve a paginated conversation history for a contact by ID.

Get Database Filters

Tool to retrieve available filters for searching the people and companies database.

Export Campaign Leads

Tool to export campaign leads with state filtering and choose between JSON or CSV output.

Export Unsubscribes

Tool to download a CSV file containing all unsubscribed email addresses.

Get Unsubscribed Email

Tool to retrieve a single unsubscribed email record.

Get Label

Tool to retrieve information about a specific label by its ID.

Get Lead By ID

Retrieve one Lemlist lead using its known lead identifier.

Get Lemwarm Settings

Retrieve Lemwarm configuration and deliverability data for a mailbox.

List Campaigns

Tool to retrieve a list of campaigns for the team.

List Tasks

Retrieve a page of pending tasks assigned to team members, with optional filters such as campaign or assignee.

List Team Senders

Tool to retrieve all team members and their associated campaigns.

List Watchlist Signals

Tool to retrieve paginated watchlist signals with filtering and sorting.

Get People Schema

Tool to retrieve the schema definition for people in the people database.

Retrieve Activities

Tool to fetch recent campaign activities.

Retrieve Lead By Email

Retrieve a lead by email address, returning selected lead and campaign details.

Retrieve Unsubscribes

Retrieve unsubscribe records across campaigns, with offset and limit pagination for syncing or auditing unsubscribed contacts.

Get Team Credits

Retrieve the team's remaining credits and their breakdown.

Get Team Info

Retrieve information about your team, including member IDs, webhooks, and enabled features.

Get User

Retrieve a user by ID, including available LinkedIn settings and connected mailbox details.

Get User Info

Retrieve available profile details for the authenticated user.

Launch Lead

Launch a lead that is waiting for review in its Lemlist campaign.

List Companies

Tool to retrieve a paginated list of all companies in your CRM.

List Company Notes

Retrieve a page of notes associated with a specific company, with optional pagination and sorting.

List Contacts

Search or filter one paginated contact page; not for batch ID lookup.

List Inbox Conversations

List a Lemlist user's inbox conversations one page at a time.

List Labels

Tool to list all labels available to your team.

Mark Lead as Not Interested in Campaign

Tool to mark a lead as not interested in a specific campaign.

Update Campaign

Tool to update settings of a campaign.

Update Schedule

Tool to update an existing schedule with new parameters.

Update Sequence Step

Tool to update an existing step in a sequence (edit subject/message/delay/etc.

Add Step to Sequence

Tool to add a new step (email, LinkedIn, conditional, etc.

Add Unsubscribe Email/Domain

Tool to add an email or domain to the unsubscribed list.

Add Variables to Lead

Tool to add one or more variables to a lead.

Associate schedule with campaign

Tool to associate a schedule with a campaign.

Create Campaign

Tool to create a new campaign.

Create Label

Tool to create a new label for inbox conversations.

Create Lead In Campaign

Tool to create a lead and add it to a specific campaign.

Create Schedule

Create a team schedule with custom active times or delays for outreach operations.

Create Task

Create a task (opportunity) associated with a contact, company, or lead to track outreach follow-ups or action items.

Ignore Tasks

Tool to mark one or more tasks as ignored in Lemlist.

Mark Lead As Interested

Tool to mark a lead as interested in all campaigns.

Mark Lead As Interested In Campaign

Tool to mark a lead as interested in a specific campaign.

Mark Lead As Not Interested

Tool to mark a lead as not interested in all campaigns.

Pause a running campaign

Tool to pause a running campaign.

Pause Lead

Tool to pause a lead in all campaigns or a specific campaign.

Search Companies Database

Tool to search the companies database using filters, keywords, and pagination.

Search People Database

Tool to search the Lemlist people database using filters, keywords, and pagination.

Send Inbox Email

Send a standalone inbox email or reply in an existing Lemlist thread.

Update Campaign Lead

Update a campaign lead.

Update Task

Tool to update an existing task including assignment, scheduling, and status.

Upsert Contact

Create a standalone contact or reconcile an existing Lemlist contact.

FRAMEWORKS

How to build Lemlist MCP Agent with another framework

Claude Code logo

Claude Code

Use Lemlist MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Lemlist MCP with Claude Cowork

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Lemlist MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Lemlist MCP with Claude Agent SDK

OpenClaw logo

OpenClaw

Use Lemlist MCP with OpenClaw

Hermes logo

Hermes

Use Lemlist MCP with Hermes

Atomic Agent logo

Atomic Agent

Use Lemlist MCP with Atomic Agent

Google ADK logo

Google ADK

Use Lemlist MCP with Google ADK

LangChain logo

LangChain

Use Lemlist MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Lemlist MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Lemlist MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Lemlist MCP with LlamaIndex

CrewAI logo

CrewAI

Use Lemlist MCP with CrewAI

Pydantic AI logo

Pydantic AI

Use Lemlist MCP with Pydantic AI

AutoGen logo

AutoGen

Use Lemlist MCP with AutoGen

FAQ

Frequently asked questions

Start with Lemlist.It takes 30 seconds.

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

Start building