Read Laposta lists, members, campaigns and reports; add members and build campaigns. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the Laposta connector, then ask in plain words. The AI picks the tools.
For marketers and shop owners who send newsletters with Laposta.
The AI lists your mailing lists with the number of active, unsubscribed and cleaned members, so you see how each list is doing.
The AI reads the campaign reports and sets sent, opened, clicked, bounced and unsubscribed figures side by side for your latest newsletters.
The AI finds a member by email address and reads the event history: what they opened, clicked, and when they signed up or unsubscribed.
The AI reads the subject, sender, recipients and plain-text content of a campaign, and points out what looks wrong or missing.
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 dataThe 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 dataThe 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.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
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"
}
}
} Run these commands. The second one opens the login page:
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 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.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper account | $9/mo · $90/yr | 10,000 tool calls / month |
| Pro+per account | $39/mo · $390/yr | 100,000 tool calls / month |
Each paid plan covers this Laposta server only. Ask your AI to run laposta_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 laposta_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 laposta_upgrade before then undoes the cancel. Or write to [email protected].
laposta_list_listslaposta_get_listlaposta_list_fieldslaposta_list_segmentslaposta_list_memberslaposta_get_memberlaposta_get_member_historylaposta_list_campaignslaposta_get_campaignlaposta_get_campaign_contentlaposta_get_campaign_historylaposta_list_reportslaposta_get_reportlaposta_add_memberlaposta_update_memberlaposta_create_campaignlaposta_set_campaign_contentlaposta_send_test_emaillaposta_usage_statuslaposta_request_featurelaposta_upgradelaposta_cancel_subscriptionCount 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 10,000 tool calls / month. Pro+ costs $39/mo or $390/yr, with 100,000 tool calls / month. Each subscription covers this Laposta server only. Cancel any time: your paid plan 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 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 laposta_cancel_subscription. Your paid plan 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.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.