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monk24215

listmonk-mcp

by monk24215

listmonk-mcp

MCP server for self-hosted Listmonk. Lists, subscribers, campaigns, templates, bounces and transactional email as MCP tools.

Status: Phase 1 tools are implemented and tested against Listmonk v6.1.0 (selftest, read tools, subscriber write round-trip, read-only mode).

Requirements

  • Node.js 18+

  • Listmonk v6.x with an API user (Admin -> Users -> API user)

Related MCP server: listmonk-mcp-bridge

Setup

npm install
npm run build
cp .env.example .env   # fill in LISTMONK_URL, LISTMONK_API_USER, LISTMONK_API_TOKEN
npm run selftest       # verifies URL, credentials and permissions before you register the server

Configuration

Variable

Required

Default

Purpose

LISTMONK_URL

yes

Base URL of the instance, no /api

LISTMONK_API_USER

yes

API user name

LISTMONK_API_TOKEN

yes

API token

LISTMONK_MCP_READONLY

no

false

true = write and delete tools are not registered

MCP_TRANSPORT

no

stdio

stdio or http

MCP_HTTP_PORT

no

3100

HTTP port

MCP_HTTP_TOKEN

http only

At least 24 characters

Tools (current)

  • System: listmonk_status, listmonk_dashboard_counts, listmonk_logs, listmonk_settings_get (secrets redacted), listmonk_smtp_test

  • Lists: lists_list, list_get, list_create, list_update, list_delete

  • Subscribers: subscribers_search, subscriber_get, subscriber_create, subscriber_update, subscribers_lists_change, subscriber_delete

  • Campaigns: campaigns_search, campaign_get, campaign_create, campaign_update, campaign_set_status, campaign_test_send, campaign_delete

  • Templates: templates_list, template_get, template_create, template_update, template_delete

  • Bounces: bounces_search, bounce_get, bounce_delete

  • Transactional: tx_send

Read-only mode registers 14 tools (all read tools). Read-write registers 32.

Note: campaign_set_status with "running" sends email to every recipient immediately.

The full planned set is in TOOL-SPEC.md.

Security

  • Credentials come from environment variables only.

  • Settings output redacts any key containing pass, secret, token, key or cred.

  • Over HTTP, the /mcp/ URL is itself the secret. Treat it like a password.

License

MIT

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