Wellknown MCP by usefulapi MCP Server

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answering

Wellknown MCP by usefulapi is answering right now. Last checked 11 min ago. It exposes 7 tools. Last commit 2 Nov 2026.

Read venue, treatments, open times and bookings; set hours and blocked times in Wellknown.

Uptime history 21 hours of history

21 hours agonow

100.0%

Uptime 24h

77 of 77 checks

Tools

read from the server

186 ms

Response time

average over 24h

Stars

last commit 2 Nov 2026

What changed 1

Every tool that appeared, vanished or quietly changed what it asks for. Recorded since 2 November 2026. No other catalogue keeps this.

2 Nov a tool changed version

Nothing serious here today

Today is the operative word: we check Wellknown 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 11 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

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

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

https://wellknown.usefulapi.io/mcp

~/.codex/config.toml

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

.cursor/mcp.json

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

.vscode/mcp.json

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

Available tools 7

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

wellknown

wellknown_get_availability

Get the free time slots Wellknown sells, per treatment per day (time, end, places free). Up to 31 days per call; `to` is exclusive. Wellknown API: GET /availability/.

wellknown_get_booking

Get one booking by reference (for example WK-7KQ2MD): status (confirmed, checked in, completed, cancelled), treatment, guests, date, times, customer and money fields in minor units. Contains sensitive health answers. Wellknown API: GET /bookings/{ref}/.

wellknown_get_venue

Get the venue profile: name, market (uk/us), currency, timezone, slot and buffer minutes, lead hours, opening hours per weekday, cancellation rules and treatments. Good first call. Wellknown API: GET /venue/.

wellknown_list_bookings

List bookings changed since a timestamp (the updatedAt high-water mark). Bookings are already paid in full. Output holds customer contact data and guest health answers: treat them as sensitive. Wellknown API: GET /bookings/.

wellknown_list_treatments

List the venue's treatments with id, name, kind, duration, price per person (minor units), max guests, capacity and peak-date seasons. Wellknown API: GET /treatments/.

wellknown_replace_blocks

WRITE, FULL REPLACE. Set the times the venue's own appointments take, so Wellknown never double-books. Every block NOT sent is removed. units = places taken from every treatment; units 0 closes the whole venue for that time. Wellknown API: PUT /blocks/.

wellknown_set_date_hours

WRITE. Change opening hours for single dates on Wellknown. Per day: opens + closes (HH:MM), or closed true, or only the date to go back to normal hours. Changes what customers can book. Wellknown API: PUT /availability/.

Endpoints

URL	Transport	State	Latency	Checked
https://wellknown.usefulapi.io/mcp	streamable-http	answering	143 ms	11 min ago

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Wellknown MCP by usefulapi — questions

Answers built from our own checks of this server.

What can Wellknown MCP by usefulapi do?

It exposes 7 tools, read directly from the server on our last check. Among them: wellknown_get_availability, wellknown_get_booking, wellknown_get_venue, wellknown_list_bookings, wellknown_list_treatments, wellknown_replace_blocks and 1 more. 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 Wellknown MCP by usefulapi working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 77 of 77 checks got a reply (100.0%), average response time 186 ms. The bar chart above shows every period we have measured.

How do I connect Wellknown 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 Wellknown MCP by usefulapi need an API key?

No. Wellknown MCP by usefulapi completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is Wellknown MCP by usefulapi?

It answers our handshake in 186 ms on average, which is faster than 75% of all working MCP servers we measure. That puts it in the quick quarter of the ecosystem. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is Wellknown MCP by usefulapi open source?

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