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Lemlist MCP Integration for LangChain

Connect Lemlist to LangChain through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

7 functions 6 read 1 write Username and password auth
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Connect Lemlist to LangChain

Bridge LangChain agents to local KosmoKrator integration tools through MCP or headless CLI calls.

Use the MCP gateway when the agent should discover tools, or wrap kosmo integrations:call for fixed chains. The gateway is local, scoped to this integration, and starts with --write=deny so LangChain can inspect read-capable tools without receiving write access by default.

Lemlist MCP Config for LangChain

Keep the gateway scoped to the integration and operation class needed by the chain.

{
  "mcpServers": {
    "kosmokrator-lemlist": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=lemlist",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=lemlist --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Lemlist instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Lemlist Tools Visible to LangChain

LangChain sees stable MCP tool names generated from the Lemlist integration catalog.

MCP toolSource functionTypeDescription
integration__lemlist__lemlist_list_campaigns lemlist.lemlist_list_campaigns Read List all outreach campaigns in Lemlist. Returns campaign IDs, names, statuses, and other metadata.
integration__lemlist__lemlist_get_campaign lemlist.lemlist_get_campaign Read Get details of a specific Lemlist campaign by ID. Returns the full campaign configuration and statistics.
integration__lemlist__lemlist_list_leads lemlist.lemlist_list_leads Read List leads in a specific Lemlist campaign. Returns lead contact information, email status, and campaign progress.
integration__lemlist__lemlist_add_lead lemlist.lemlist_add_lead Write Add a lead to a Lemlist campaign. The lead will be queued for outreach according to the campaign schedule.
integration__lemlist__lemlist_list_teams lemlist.lemlist_list_teams Read List all teams in the Lemlist account. Returns team names, member lists, and configuration.
integration__lemlist__lemlist_list_subaccounts lemlist.lemlist_list_subaccounts Read List all sub-accounts in Lemlist. Returns sub-account names, statuses, and usage details.
integration__lemlist__lemlist_get_current_user lemlist.lemlist_get_current_user Read Get the profile of the currently authenticated Lemlist user. Returns name, email, plan, and account details.

Related Lemlist Pages

Lemlist CLIUse direct JSON commands instead of MCP discovery. Lemlist MCPFull gateway reference and MCP tool names. KosmoKrator for LangChainClient-level gateway setup.