usefulapiMoosend MCP server
Inspect Moosend lists, subscribers, segments and campaign stats, and add or unsubscribe subscribers. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
What can I ask?
Turn on the Moosend connector, then ask in plain words. The AI picks the tools.
- How did my last email campaign do on opens and clicks?
- How many active subscribers are on each of my mailing lists?
- Which links got the most clicks in my latest campaign?
- Add jane@example.com as a subscriber to my newsletter list.
What you can do with Moosend in Claude and ChatGPT
For email marketers who send newsletters and campaigns with Moosend.
Check how a campaign did
The AI reads a sent campaign's results: sent, opens, clicks, bounces, complaints and unsubscribes. It compares campaigns from the list.
Find which links and countries got the most response
The AI lists every link in a campaign with total and unique clicks, and the opens by country code. You see what readers care about.
Count subscribers per list and find one by email
The AI lists mailing lists with active, bounced, removed and unsubscribed counts, and looks up a subscriber by email address in a list.
Read segments and who matches them
The AI lists the segments of a list with their criteria, and lists the subscribers who currently match one segment.
Create lists and add, update or unsubscribe subscribers
The AI adds a subscriber to a list or updates one, and unsubscribes an email from one list. It can also create a mailing list.
Changes dataHow do I connect Moosend?
Before you connect
The login page asks for your Moosend API key.
Find it in Moosend → More → Settings → API key. API access requires a paid plan (or the free trial), and the key can reach what its user's role allows. Your key is used only to call the Moosend API on your behalf and to derive a private account id; it is never shown to anyone.
Claude claude.ai · Desktop
- Open Customize → Connectors, then click + Add → Add custom connector.
- Enter the name Moosend and this URL, then click Add:https://
moosend. usefulapi. io/ mcp - Claude opens the login page: enter your Moosend API key.
- In a chat, click + → Connectors and turn on Moosend.
Team and Enterprise: an Owner adds the connector for the organization first.
ChatGPT chatgpt.com
- Open Plugins, click +, then Add custom MCP server.
- Enter the name Moosend and this URL, choose OAuth as the authentication, confirm the warning and create it:https://
moosend. usefulapi. io/ mcp - ChatGPT opens the login page: enter your Moosend API key.
- In Plugins, install Moosend, then choose it in a chat.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Claude Code
Run this command, then run /mcp in Claude Code to log in:
Cursor
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"moosend": {
"url": "https://moosend.usefulapi.io/mcp"
}
}
} VS Code
Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"moosend": {
"type": "http",
"url": "https://moosend.usefulapi.io/mcp"
}
}
} Codex
Run these commands. The second one opens the login page:
Other clients
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
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: the login page asks for your Moosend API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
Pricing
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per user | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Moosend server only. Ask your AI to run moosend_upgrade and choose Pro or Pro+, billed monthly or yearly (it returns a Stripe Checkout link). If you already have Pro, ask to change it to Pro+. The change requires your confirmation, keeps your billing interval and charges the price difference for the rest of the period immediately. Cancel any time with moosend_cancel_subscription: your paid plan continues to the end of the paid period, with no refund for the current period, and asking to resume the same plan with moosend_upgrade before then undoes the cancel. Or write to support@usefulapi.io.
Tools 24
Show all 24 tools (the AI picks them for you)
Read only · 15
- List mailing lists
moosend_list_mailing_listsList the active email (mailing) lists in the account with member counts (active, bounced, removed, unsubscribed), custom field definitions and preferences, plus paging info. A cheap way to confirm the API key works and to find list IDs. - Get mailing list details
moosend_get_mailing_listGet one mailing list: name, member counts, status, custom field definitions (id, name, type, required), preferences and the latest import operation. - List subscribers in a list
moosend_list_subscribersList the subscribers of one mailing list filtered by status (Subscribed, Unsubscribed, Bounced or Removed), with name, email, custom fields, tags, preferences and dates. Paged. - Find subscriber by email
moosend_get_subscriber_by_emailLook up a subscriber in one mailing list by email address: ID, name, status (SubscribeType 1 subscribed, 2 unsubscribed, 3 bounced, 4 removed), custom fields, tags and preferences. - Get subscriber by ID
moosend_get_subscriberGet one subscriber in a mailing list by subscriber ID. - List segments of a list
moosend_list_segmentsList the segments of one mailing list, including their criteria, match type (0 all / 1 any) and a readable description. - Get segment details
moosend_get_segmentGet one segment's details and criteria (not its members). - List segment subscribers
moosend_list_segment_subscribersList the subscribers that currently match one segment's criteria. - List campaigns
moosend_list_campaignsList campaigns with status (0 draft, 1 queued, 3 sent, 5 awaiting delivery, 6 sending, ...), delivery/schedule dates, target lists and headline stats (sent, opens, clicks, bounces, unsubscribes, complaints). Paged, up to 1000 per page. - Get campaign details
moosend_get_campaignGet one campaign's details: subject, sender and reply-to, HTML and plain content, target lists/segments, schedule, status and A/B data. No statistics (use moosend_get_campaign_summary). - Get campaign summary
moosend_get_campaign_summaryGet a sent campaign's results to date: sent, total/unique opens, total/unique link clicks, bounces, complaints, forwards and unsubscribes. - Get campaign recipient activity
moosend_get_campaign_activityPer-recipient activity for a campaign by type: Sent, Opened, LinkClicked, Unsubscribed, Bounced, Complained, or Activity (all). Paged (default 50, max 1000) and filterable by date. NOTE: Moosend rate-limits this endpoint to 2 calls per 60 seconds per API key. - Get campaign link clicks
moosend_get_campaign_link_activityList every link in a campaign with its total and unique click counts. - Get campaign opens by country
moosend_get_campaign_activity_by_locationA campaign's total and unique opens broken down by country code. - List campaign senders
moosend_list_sendersList the account's campaign senders (name, email, enabled, SPF/DKIM verification). A draft campaign's sender and reply-to must be one of these.
Changes data · 5
- Create a mailing list
moosend_create_mailing_listWRITE: create a new, empty mailing list. Returns the new list's ID. - Add or update a subscriber
moosend_add_subscriberWRITE: add one subscriber to a mailing list. If the email already exists in the list, that subscriber is UPDATED instead (and custom fields you omit are cleared). A previously unsubscribed address is re-subscribed. Rate limit 10 calls / 10 s. Moosend: POST /subscribers/{MailingListID}/subscribe.json. - Update a subscriber
moosend_update_subscriberWRITE: update one subscriber (by ID) in a mailing list — email, name, custom fields, tags, preferences. Include every custom field you want to keep. - Unsubscribe from a list
moosend_unsubscribe_subscriberWRITE: unsubscribe one email address from one mailing list (not account-wide). Undo by adding the subscriber again with moosend_add_subscriber. - Create a draft campaign
moosend_create_draft_campaignWRITE: create a regular (non-A/B) DRAFT campaign. It is NOT sent — sending stays a human action in Moosend. Give the content as html_content or a web_location URL. sender_email and reply_to_email must be senders in the account (see moosend_list_senders). Returns the new campaign's ID.
Your usefulapi plan · 4
- Usage status (free-tier meter)
moosend_usage_statusReport the caller's current usage: the plan, calls used this month, the limit of the plan (the free monthly cap or the Pro fair use limit), remaining, and whether the limit is reached. Read-only; does not count against the meter. - Request a missing feature
moosend_request_featureTell usefulapi that the user needs something the Moosend tools cannot do yet (a missing tool, field or filter). Call it only when the user asks for something none of the tools can do, and tell the user that you send the request. Do not call it for errors or for normal requests. Do not include personal data, credentials or customer records. Stored with the product name and the client type (for example Claude or Cursor), without the user's account. At most 5 requests per day. Does not count against the meter. - Upgrade to Pro or Pro+
moosend_upgradeGet a paid plan for Moosend (the free tier caps monthly usage). Pro: 10,000 tool calls a month, for normal use — plan "monthly" ($9/month) or "yearly" ($90/year, 2 months free). Pro+: 100,000 tool calls a month, for automations and heavy use — plan "plus" ($39/month) or "plus_yearly" ($390/year). Without a plan it returns both Pro and Pro+, each with a payment link, for the user to choose; with a plan, one link. An existing Pro subscription changes to Pro+ in place: call without confirm first, as the reply states the exact charge for this account (the price difference for the rest of the period, or in a free Pro trial the full Pro+ price, as the trial ends); then call with confirm: true. Cancel any time: the plan then runs to the end of the paid period, so it also suits a one-time job. A link opens Stripe Checkout in the browser; after payment the account upgrades automatically. Does not count against the meter. - Cancel the Pro subscription
moosend_cancel_subscriptionCancel the caller's Moosend Pro subscription at the end of the paid period (no refund for the current period; Pro continues until then, then the free tier applies). Requires confirm: true. Run moosend_upgrade later to undo the cancel before the period ends. Does not count against the meter.
FAQ
What can I do with Moosend in Claude or ChatGPT?
Check how a campaign did. Find which links and countries got the most response. Count subscribers per list and find one by email. Read segments and who matches them. Create lists and add, update or unsubscribe subscribers. See what you can do for the details.
Is this an official Moosend product?
No. usefulapi is an independent service. It is not affiliated with or endorsed by Moosend. The server calls the Moosend API with your own Moosend access, so it sees only the data that your account can see.
Can I connect Moosend to Claude or ChatGPT?
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
What do I need to connect?
The login page asks for your Moosend API key. See Before you connect for where to find it.
Do I put my Moosend key or an Authorization header in the client config?
No. 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: the login page asks for your Moosend API key. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
How do you keep my Moosend credentials?
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Moosend API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Moosend.
Can the AI change my Moosend data?
Yes, if you approve it. 5 of the 20 Moosend tools can create or change data. The other 15 are marked read-only. Most MCP clients ask you to approve a tool call before it runs.
What does it cost?
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Moosend server only. Cancel any time: your paid plan then runs to the end of the paid period. Run moosend_usage_status to see how many calls you used.
How do I subscribe or cancel?
Ask the AI to run moosend_upgrade and choose Pro or Pro+, billed monthly or yearly: it returns a Stripe Checkout link. If you already have Pro, ask to change it to Pro+. After you confirm, your existing subscription changes in place, keeps its billing interval and charges the price difference for the rest of the period immediately. To cancel, run moosend_cancel_subscription. Your paid plan continues to the end of the paid period.
What if a Moosend tool that I need is missing?
Tell the AI what you wanted to do. It can send the request with moosend_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Which AI clients can I use?
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.