0n3
MCP servers · Lemlist · MCP server + skill

Connect Claude Code to Lemlist

One line gives Claude Code your Lemlist account as tools: 7 endpoints, campaigns, activities, leads, called with your own connection. No key in the prompt, a receipt for every call, revoke Claude Code's access alone any time.

Get the line for Claude CodeConnect Lemlist first

Three steps

  1. Create a free 0n3 account and connect Lemlist. Paste a key or sign in; it lands in your vault, encrypted.
  2. Install 0n3 into Claude Code. The terminal agent. One command, then every connection you hold is a tool in your shell. The skill file teaches it how 0n3 works.
  3. Ask Claude Code: whoami. Then: "List campaigns in Lemlist".
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"

The line above carries a placeholder; 0n3.app/install mints a real key named for Claude Code and fills it in.

What Claude Code can then do in Lemlist

Campaigns · Manage outreach campaigns5
List campaignsGET /campaigns
Get a campaignGET /campaigns/{campaignId}
Add a leadPOST /campaigns/{campaignId}/leads/{email}
List leadsGET /campaigns/{campaignId}/leads
Delete a leadDELETE /campaigns/{campaignId}/leads/{email}
Activities · Track email activities1
List activitiesGET /activities
Leads · Manage campaign leads0
Manage campaign leads
More · Everything else this app exposes.1
Get a teamGET /team

Lemlist in other AI clients

Claude (desktop & claude.ai) + LemlistconnectorChatGPT + Lemlistconnector · GPT actionCodex CLI + LemlistMCP serverGemini CLI + LemlistMCP serverCursor + LemlistMCP serverVS Code (Copilot) + LemlistMCP serverWindsurf + LemlistMCP server

Claude Code with other apps

Hostinger363 endpointsTelegram132 endpointsPipedrive95 endpointsResend67 endpointsSquare57 endpointsLinkedIn50 endpointsSlack45 endpointsFigma32 endpointsCloudConvert32 endpointseBay25 endpointsQuickBooks21 endpointsCloudflare21 endpoints