MailerLite MCP by usefulapi

io.usefulapiPublished by usefulapi.ioOfficial publisherv1.36.4Updated Nov 7, 2026

Read subscribers, groups, campaigns, fields, segments, automations, webhooks; safe additive writes.

The publisher's own server: Ably MCP by usefulapi

VerifiedStreamable HTTPWeb executableCommunication & Collaboration Business & Commerce

Server details

Identifier: io.usefulapi/mailerlite
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Sep 16, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified that this server's namespace belongs to usefulapi.io, which also runs its endpoint. That identifies the publisher; it does not make the server's tools safe.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

Hosted MailerLite connector that lets an assistant read subscribers, groups, campaigns, segments and automations, plus a few additive writes.

What you can do: List and fetch subscribers, including by group and status
List groups, custom fields, segments, automations and webhooks
List and fetch campaigns with their results
Create or update a subscriber, create a group, add a subscriber to a group
Check monthly tool-call usage and manage the paid plan
When to use it: Useful when you want to ask questions about a MailerLite audience in plain language — who is subscribed or unsubscribed, which groups exist and how big they are, how sent campaigns performed — or to add a subscriber or group without opening the MailerLite dashboard.
Requirements: A remote MCP endpoint; no local install. Connect with the endpoint URL only and sign in through OAuth, pasting your MailerLite API key on first connect; the key is validated and stored per user. A free tier allows 50 tool calls per month.

Before you install

The server asks for your MailerLite API key, which grants access to your account data; it is stored by the third-party host. Three tools write to your account (upsert subscriber, create group, assign subscriber to group), so confirm before use. Paid plans are billed through a Stripe checkout link, and cancelling gives no refund for the current period. Usage is metered per tool call.

Installation

In SourceWeft

Open MailerLite MCP by usefulapi in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.usefulapi%2Fmailerlite/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "mailerlite-by-usefulapi": {
      "type": "http",
      "url": "https://mailerlite.usefulapi.io/mcp"
    }
  }
}

README

MailerLite MCP by usefulapi

Read your MailerLite subscribers, groups and campaigns from Claude, Cursor, or any MCP client. Hosted, no local install — connect with your MailerLite API key.

Live endpoint: https://mailerlite.usefulapi.io/mcp · Homepage: https://usefulapi.io/mailerlite

Connect

Claude (claude.ai, Desktop): open Customize → Connectors, click + Add → Add custom connector, and paste https://mailerlite.usefulapi.io/mcp.
Claude Code: claude mcp add --transport http mailerlite https://mailerlite.usefulapi.io/mcp, then run /mcp to log in.
VS Code: Add to VS Code.
Cursor and other clients: add the URL as a remote MCP server:

Add only the URL. Do not add an Authorization header or an API key to the client config: the server signs you in with OAuth, and the login page asks for your MailerLite credentials.

Step-by-step setup, where to find your credentials, and FAQ: https://usefulapi.io/mailerlite/

On first connect you'll paste your MailerLite API key. It's validated, stored per-user, and scoped to you.

Tools

Tool	Type	What it does
`mailerlite_list_subscribers`	read	List subscribers
`mailerlite_get_subscriber`	read	Get subscriber
`mailerlite_list_groups`	read	List groups
`mailerlite_list_group_subscribers`	read	List group subscribers
`mailerlite_list_campaigns`	read	List campaigns
`mailerlite_get_campaign`	read	Get campaign
`mailerlite_list_fields`	read	List fields
`mailerlite_list_segments`	read	List segments
`mailerlite_list_automations`	read	List automations
`mailerlite_list_webhooks`	read	List webhooks
`mailerlite_upsert_subscriber`	write	Upsert subscriber
`mailerlite_create_group`	write	Create group
`mailerlite_assign_subscriber_to_group`	write	Assign subscriber to group
`mailerlite_usage_status`	meta	Usage status (free-tier meter)
`mailerlite_request_feature`	meta	Request a missing feature
`mailerlite_upgrade`	meta	Upgrade to Pro or Pro+
`mailerlite_cancel_subscription`	meta	Cancel the Pro subscription

read tools are read-only; write tools mutate data (clients should confirm them); meta tools report usage, manage your subscription or send a feature request.

Pricing

*Pro has a fair use limit of 10,000 tool calls a month on this server. For more, write to [email protected].

Pro covers this server only. Subscribe with mailerlite_upgrade (it returns a Stripe Checkout link). Cancel any time with mailerlite_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running mailerlite_upgrade before then undoes the cancel. Or write to [email protected].

License

MIT — see LICENSE. Documentation only; the server is hosted.

Source: servers/mailerlite/README.md at commit 4046075

Tools

mailerlite_list_subscribers

List subscribers

List subscribers, optionally filtered by status. Cursor-paginated. MailerLite API: GET /subscribers.

Parameterslimitcursorstatus

mailerlite_get_subscriber

Get subscriber

Fetch a single subscriber by id or email address. MailerLite API: GET /subscribers/{id}.

Parametersidrequired

mailerlite_list_groups

List groups

List subscriber groups/lists, optionally filtered by name. Page-paginated. MailerLite API: GET /groups.

Parametersnamepagesortlimit

mailerlite_list_group_subscribers

List group subscribers

List the subscribers belonging to a group, optionally filtered by status. Cursor-paginated. MailerLite API: GET /groups/{group_id}/subscribers.

Parameterslimitcursorstatusgroup_idrequired

mailerlite_list_campaigns

List campaigns

List campaigns, optionally filtered by status. Page-paginated. Read-only — this server does NOT send campaigns. MailerLite API: GET /campaigns.

Parameterspagelimitstatus

mailerlite_get_campaign

Get campaign

Fetch a single campaign by id. Read-only. MailerLite API: GET /campaigns/{campaign_id}.

Parameterscampaign_idrequired

mailerlite_list_fields

List fields

List custom/default subscriber fields, optionally filtered by type or keyword. Page-paginated. MailerLite API: GET /fields.

Parameterspagetypelimitkeyword

mailerlite_list_segments

List segments

List segments. Page-paginated. MailerLite API: GET /segments.

Parameterspagelimit

mailerlite_list_automations

List automations

List automations (workflows), optionally filtered by enabled state. Page-paginated. MailerLite API: GET /automations.

Parameterspagelimitfilter_enabled

mailerlite_list_webhooks

List webhooks

List configured webhooks. Page-paginated. MailerLite API: GET /webhooks.

Parameterspagelimit

mailerlite_upsert_subscriber

Upsert subscriber

Creates or updates a subscriber (upsert by email). Additive — does NOT send any email. MailerLite API: POST /subscribers.

Parametersemailrequiredfieldsgroupsstatus

mailerlite_create_group

Create group

Creates a subscriber group/list (additive). MailerLite API: POST /groups.

Parametersnamerequired

mailerlite_assign_subscriber_to_group

Assign subscriber to group

Adds a subscriber to a group (additive membership). MailerLite API: POST /subscribers/{subscriber_id}/groups/{group_id}.

Parametersgroup_idrequiredsubscriber_idrequired

Version history

v1.36.4LatestNov 7, 2026
v1.35.3Nov 5, 2026
v1.35.2Nov 5, 2026
v1.35.1Nov 4, 2026
v1.35.0Nov 3, 2026
v1.34.1Nov 3, 2026
v1.33.0Nov 1, 2026
v1.31.0Oct 31, 2026
v1.30.0Oct 31, 2026
v1.29.2Oct 30, 2026
v1.29.0Oct 30, 2026
v1.24.0Oct 26, 2026
v1.21.3Oct 25, 2026
v1.21.0Oct 25, 2026
v1.20.0Oct 24, 2026
v1.17.0Oct 23, 2026
v1.16.4Oct 22, 2026
v1.16.3Oct 21, 2026
v1.11.1Oct 9, 2026
v1.10.0Oct 9, 2026
v1.0.1Sep 16, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

Reached in the last 30 daysRequired25 pts
Auth declaredRequired10 pts
Tools listedRequired15 pts
DescriptionRequired15 pts
Logo10 pts
Documentation15 pts
License10 pts

Business & Commerce5 toolsNov 7, 2026

Plan	Price	Limit
Free	$0	50 tool calls / month
Pro	$9/mo or $90/yr (2 months free)	Unlimited*