Inspect Moosend lists, subscribers, segments and campaign stats, and add or unsubscribe subscribers. Hosted by usefulapi — connect from Claude, ChatGPT, Cursor, or any MCP client.
Team and Enterprise: an Owner adds the connector for the organization first.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"moosend": {
"url": "https://moosend.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"moosend": {
"type": "http",
"url": "https://moosend.usefulapi.io/mcp"
}
}
}No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run these commands. The second one opens the login page:
Other MCP clients (Windsurf, Cline, Zed and more): add the URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser. Do not add an Authorization header: see 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.
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.
Turn on the Moosend connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
moosend_list_mailing_lists | read | List mailing lists List 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. Moosend: GET /lists/{Page}/{PageSize}.json. |
moosend_get_mailing_list | read | Get mailing list details Get one mailing list: name, member counts, status, custom field definitions (id, name, type, required), preferences and the latest import operation. Moosend: GET /lists/{MailingListID}/details.json. |
moosend_list_subscribers | read | List subscribers in a list List the subscribers of one mailing list filtered by status (Subscribed, Unsubscribed, Bounced or Removed), with name, email, custom fields, tags, preferences and dates. Paged. Moosend: GET /lists/{MailingListID}/subscribers/{Status}.json. |
moosend_get_subscriber_by_email | read | Find subscriber by email Look 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. Moosend: GET /subscribers/{MailingListID}/view.json?Email=. |
moosend_get_subscriber | read | Get subscriber by ID Get one subscriber in a mailing list by subscriber ID. Moosend: GET /subscribers/{MailingListID}/find/{SubscriberID}.json. |
moosend_list_segments | read | List segments of a list List the segments of one mailing list, including their criteria, match type (0 all / 1 any) and a readable description. Moosend: GET /lists/{MailingListID}/segments.json. |
moosend_get_segment | read | Get segment details Get one segment's details and criteria (not its members). Moosend: GET /lists/{MailingListID}/segments/{SegmentID}/details.json. |
moosend_list_segment_subscribers | read | List segment subscribers List the subscribers that currently match one segment's criteria. Moosend: GET /lists/{MailingListID}/segments/{SegmentID}/members.json. |
moosend_list_campaigns | read | List campaigns List 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. Moosend: GET /campaigns/{Page}/{PageSize}.json. |
moosend_get_campaign | read | Get campaign details Get 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). Moosend: GET /campaigns/{CampaignID}/view.json. |
moosend_get_campaign_summary | read | Get campaign summary Get a sent campaign's results to date: sent, total/unique opens, total/unique link clicks, bounces, complaints, forwards and unsubscribes. Moosend: GET /campaigns/{CampaignID}/view_summary.json. |
moosend_get_campaign_activity | read | Get campaign recipient activity Per-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. Moosend: GET /campaigns/{CampaignID}/stats/{Type}.json. |
moosend_get_campaign_link_activity | read | Get campaign link clicks List every link in a campaign with its total and unique click counts. Moosend: GET /campaigns/{CampaignID}/stats/links.json. |
moosend_get_campaign_activity_by_location | read | Get campaign opens by country A campaign's total and unique opens broken down by country code. Moosend: GET /campaigns/{CampaignID}/stats/countries.json. |
moosend_list_senders | read | List campaign senders List the account's campaign senders (name, email, enabled, SPF/DKIM verification). A draft campaign's sender and reply-to must be one of these. Moosend: GET /senders/find_all.json. |
moosend_create_mailing_list | write | Create a mailing list WRITE: create a new, empty mailing list. Returns the new list's ID. Moosend: POST /lists/create.json. |
moosend_add_subscriber | write | Add or update a subscriber WRITE: 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. |
moosend_update_subscriber | write | Update a subscriber WRITE: update one subscriber (by ID) in a mailing list — email, name, custom fields, tags, preferences. Include every custom field you want to keep. Moosend: POST /subscribers/{MailingListID}/update/{SubscriberID}.json. |
moosend_unsubscribe_subscriber | write | Unsubscribe from a list WRITE: unsubscribe one email address from one mailing list (not account-wide). Undo by adding the subscriber again with moosend_add_subscriber. Moosend: POST /subscribers/{MailingListID}/unsubscribe.json. |
moosend_create_draft_campaign | write | Create a draft campaign WRITE: 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. Moosend: POST /campaigns/create.json. |
moosend_usage_status | Usage status (free-tier meter) Report 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. | |
moosend_request_feature | Request a missing feature Tell 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. | |
moosend_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Moosend (the free tier caps monthly usage). Plans: "monthly" — $9/month; "yearly" — $90/year (2 months free). Cancel any time: Pro then runs to the end of the paid period, so it also suits a one-time job. *A fair use limit applies. For heavy use (near Pro's limit): "plus" or "plus_yearly" — Pro+, $19/month or $190/year, unlimited tool calls (fair use limit: 100,000 a month); an existing Pro subscription changes to Pro+ in place (needs confirm: true; the price difference for the rest of the period is charged at once). Otherwise returns a short link to open in your browser (it opens Stripe Checkout); after payment the account upgrades automatically. Does not count against the meter. | |
moosend_cancel_subscription | Cancel the Pro subscription Cancel 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. |
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Moosend server only. Subscribe with moosend_upgrade (it returns a Stripe Checkout link). Cancel any time with moosend_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running moosend_upgrade before then undoes the cancel. Or write to [email protected].
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.
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.
The login page asks for your Moosend API key. See Before you connect for where to find it.
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.
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.
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.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Moosend server only. Cancel any time: Pro then runs to the end of the paid period. Run moosend_usage_status to see how many calls you used.
Ask the AI to run moosend_upgrade: it returns a Stripe Checkout link. To cancel, run moosend_cancel_subscription. Pro continues to the end of the paid period.
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.
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.