Corsizio MCP by usefulapi MCP Server

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answering

Corsizio MCP by usefulapi is answering right now. Last checked 9 min ago. It exposes 6 tools. Last commit 25 Oct 2026.

Read Corsizio events, attendees and registrations, including payment status. Read-only.

Uptime history 22 hours of history

22 hours agonow

100.0%

Uptime 24h

80 of 80 checks

Tools

read from the server

430 ms

Response time

average over 24h

Stars

last commit 25 Oct 2026

What changed 3

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 25 October 2026. No other catalogue keeps this.

25 Oct a tool changed version3 times that day

and 2 more, back to 25 October 2026

Nothing serious here today

Today is the operative word: we check Corsizio MCP by usefulapi every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add corsizio --transport http https://corsizio.usefulapi.io/mcp

Settings → Connectors → Add custom connector, then paste this address

https://corsizio.usefulapi.io/mcp

~/.codex/config.toml

[mcp_servers.corsizio]
url = "https://corsizio.usefulapi.io/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "corsizio": {
      "url": "https://corsizio.usefulapi.io/mcp"
    }
  }
}

.vscode/mcp.json

{
  "servers": {
    "corsizio": {
      "type": "http",
      "url": "https://corsizio.usefulapi.io/mcp"
    }
  }
}

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

corsizio

corsizio_get_account

Get the Corsizio account behind the API key: name, alias, time zone, currency, site URL, contact, and the configured locations, categories, age groups, genders, levels and price ranges (their ids are the filters for corsizio_list_events). Good first call. API: GET /account.

corsizio_get_attendee

Get one attendee registration in full: contact data, registration answers, internal remark, status, and with include=payment the amount, fees, taxes, refunds and transactions (card brand and last 4 digits). Returns personal data. The API key needs the attendees permission. API: GET /attendees/{id}.

corsizio_get_event

Get one event in full: dates, location, ticket prices and early-bird prices, descriptions, max spots, contact and instructors. Use include=stats for registration counts. For the attendee list use corsizio_list_attendees with the event id (or corsizio_get_event_with_attendees). API: GET /events/{id}.

corsizio_get_event_with_attendees

Get one event together with its attendees (and optionally each attendee's payment) in a single call. Returns personal data of registrants (names, emails, phones, notes); only use it when you need the roster, otherwise prefer corsizio_get_event or corsizio_list_attendees with a limit. API: GET /events/{id}?include=attendees[,payment].

corsizio_list_attendees

List attendee registrations across the account, or for one event (event filter): name, email, phone, status, registration answers and dates. Default status is active. Filter by status (e.g. owing,!canceled), created-date range, event id, coupon code or a search word (name, email, phone). Returns personal data. The API key needs the attendees permission. API: GET /attendees.

corsizio_list_events

List the account's events (classes, workshops, camps) with dates, location, prices and page URLs, newest start first by default. Only published events unless status says otherwise. Filter by status, date range, price range, category/location/age/gender/level id (from corsizio_get_account) or a name word. API: GET /events.

Endpoints

URL	Transport	State	Latency	Checked
https://corsizio.usefulapi.io/mcp	streamable-http	answering	199 ms	9 min ago

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Corsizio MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Corsizio MCP by usefulapi do?

It exposes 6 tools, read directly from the server on our last check. Among them: corsizio_get_account, corsizio_get_attendee, corsizio_get_event, corsizio_get_event_with_attendees, corsizio_list_attendees, corsizio_list_events. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is Corsizio MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 80 of 80 checks got a reply (100.0%), average response time 430 ms. The bar chart above shows every period we have measured.

How do I connect Corsizio MCP by usefulapi?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does Corsizio MCP by usefulapi need an API key?

No. Corsizio MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Corsizio MCP by usefulapi?

It answers our handshake in 430 ms on average, which is faster than 32% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Corsizio MCP by usefulapi open source?

The code is open source: it is published under the MIT licence, written in JavaScript, 0 stars on GitHub and 1 open issue. The licence covers the code in the repository, not the hosted service at corsizio.usefulapi.io, which runs on its operator's own terms.