Read Laposta lists, members, campaigns and reports; add members and build campaigns. For marketers and shop owners who send newsletters with Laposta. 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": {
"laposta": {
"url": "https://laposta.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"laposta": {
"type": "http",
"url": "https://laposta.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 AI lists your mailing lists with the number of active, unsubscribed and cleaned members, so you see how each list is doing.
laposta_list_lists laposta_get_list
The AI reads the campaign reports and sets sent, opened, clicked, bounced and unsubscribed figures side by side for your latest newsletters.
laposta_list_reports laposta_get_report
The AI finds a member by email address and reads the event history: what they opened, clicked, and when they signed up or unsubscribed.
laposta_get_member laposta_get_member_history
The AI reads the subject, sender, recipients and plain-text content of a campaign, and points out what looks wrong or missing.
laposta_get_campaign laposta_get_campaign_content
Give an email address and a list. The AI adds the person, or marks a member as unsubscribed. A double opt-in list sends its confirmation email.
Changes data · laposta_list_fields laposta_add_member laposta_update_member
The AI creates a campaign draft, fills in your HTML and mails a test copy to one address. You send it to the list yourself in Laposta.
Changes data · laposta_create_campaign laposta_set_campaign_content laposta_send_test_email
The login page asks for your Laposta API key.
Create it in Laposta under Account → Integrations → API (free accounts can have 3 keys). The key gives access to the whole account, so a dedicated key for this connection is easy to revoke later. Your key is used only to call the Laposta API on your behalf; 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 Laposta 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 Laposta connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
laposta_list_lists | read | List mailing lists List all mailing lists of the Laposta account with member counts (active, unsubscribed, cleaned). Use the list_id in the other tools. |
laposta_get_list | read | Get a mailing list Get one mailing list: name, state, notification addresses and member counts. |
laposta_list_fields | read | List a list's fields List the custom fields of a mailing list (name, custom_name used as the key in custom_fields, datatype, required, options). Call this before adding or updating a member. |
laposta_list_segments | read | List a list's segments List the segments of a mailing list (a segment id can be a campaign recipient together with its list). |
laposta_list_members | read | List members of a list List the members (subscribers) of a mailing list, one page at a time. Filter by state, free-text search (email and field values) or label. Contains personal data: only fetch what the task needs. |
laposta_get_member | read | Get a member Get one member of a list by member id or email address: state, signup/confirm dates and custom field values. |
laposta_get_member_history | read | Get a member's event history The event history of one member (subscribed, confirmed, opened, clicked, bounced, unsubscribed, automations ...), newest first by default. Optionally limited to one campaign or a date range. Paged by cursor. |
laposta_list_campaigns | read | List campaigns List the account's campaigns (name, subject, sender, recipient lists, delivery moments). Use limit/offset to page. |
laposta_get_campaign | read | Get a campaign Get one campaign: name, subject, preview text, sender, reply-to, recipients, delivery moments and web version URL. |
laposta_get_campaign_content | read | Get a campaign's content Get the plain-text content of a campaign (and its import_url if it was imported). Set include_html to also get the full HTML (large). |
laposta_get_campaign_history | read | Get a campaign's event history Recipient events of one campaign (delivered, opened, clicked, bounced, unsubscribed ...), newest first by default, optionally within a date range. Paged by cursor. For totals use laposta_get_report. |
laposta_list_reports | read | List campaign reports Result figures of all campaigns: sent, accepted, opened, clicked, bounced, unsubscribed, with ratios. Use limit/offset to page. |
laposta_get_report | read | Get a campaign report Result figures of one campaign: sent, accepted, unique opens and clicks, bounces, complaints, unsubscribes and their ratios. |
laposta_add_member | write | Add a member to a list WRITE: add one email address to a mailing list (subscribe). On a double opt-in list Laposta sends the confirmation email to that address. The address must have given consent. With upsert, an existing active member's fields are overwritten; an unsubscribed member is re-activated unless suppress_reactivation is set. |
laposta_update_member | write | Update a member WRITE: change a member's custom field values and/or email address, or unsubscribe the member (state: unsubscribed). Only the fields you pass change. Re-subscribing a person is not offered here: do it in the Laposta app or with laposta_add_member upsert only when they asked for it. |
laposta_create_campaign | write | Create a campaign draft WRITE: create a new regular campaign (a draft: it is NOT filled, scheduled or sent). Fill it with laposta_set_campaign_content, check it with laposta_send_test_email and send it in the Laposta app. The from_email must be an approved sender address of the account. |
laposta_set_campaign_content | write | Set a campaign's content WRITE: replace a campaign's content with your HTML, or let Laposta import it from a URL (html wins if both are given). Does not send anything. The reply's report lists problems Laposta found (javascript, missing unsubscribe link, missing images). |
laposta_send_test_email | write | Send a campaign test email WRITE: send a test copy of a campaign (it must have content and not be sent yet) to ONE email address. Does not send the campaign to its recipients. |
laposta_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. | |
laposta_request_feature | Request a missing feature Tell usefulapi that the user needs something the Laposta 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. | |
laposta_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Laposta (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+, $39/month or $390/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. | |
laposta_cancel_subscription | Cancel the Pro subscription Cancel the caller's Laposta 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 laposta_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 account | $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 Laposta server only. Subscribe with laposta_upgrade (it returns a Stripe Checkout link). Cancel any time with laposta_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running laposta_upgrade before then undoes the cancel. Or write to [email protected].
Count subscribers on each mailing list. Compare the results of recent newsletters. See what one subscriber has done. Review a campaign before it goes out. Subscribe or unsubscribe people. Prepare a newsletter draft and send a test. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Laposta. The server calls the Laposta API with your own Laposta 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 Laposta 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 Laposta 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 Laposta 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 Laposta.
Yes, if you approve it. 5 of the 18 Laposta tools can create or change data. The other 13 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 Laposta server only. Cancel any time: Pro then runs to the end of the paid period. Run laposta_usage_status to see how many calls you used.
Ask the AI to run laposta_upgrade: it returns a Stripe Checkout link. To cancel, run laposta_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 laposta_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.