Read venue, treatments, open times and bookings; set hours and blocked times in Wellknown. For spa and salon owners who take bookings with Wellknown. 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": {
"wellknown": {
"url": "https://wellknown.usefulapi.io/mcp"
}
}
}Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"wellknown": {
"type": "http",
"url": "https://wellknown.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.
List the bookings that changed since a point in time and open one to read the details.
wellknown_list_bookings wellknown_get_booking
List the treatments and check the open times of one treatment.
wellknown_list_treatments wellknown_get_availability
Set the hours for single dates, such as a holiday or a late opening.
Changes data · wellknown_get_venue wellknown_set_date_hours
Replace the blocked times of the venue, for example for a staff day.
Changes data · wellknown_get_venue wellknown_replace_blocks
The login page asks for your Wellknown venue API key.
Create it in the Wellknown partner portal → Connect systems → API. The key starts with wk_. It is used only to call the API for your venue and to derive a private account id.
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 Wellknown venue 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 Wellknown connector, then ask in plain words. The AI picks the tools.
| Tool | Type | What it does |
|---|---|---|
wellknown_get_venue | read | 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_treatments | read | 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_get_availability | read | Get free times 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_list_bookings | read | 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_get_booking | read | Get a 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_set_date_hours | write | Set hours for single dates 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/. |
wellknown_replace_blocks | write | Replace blocked times 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_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. | |
wellknown_request_feature | Request a missing feature Tell usefulapi that the user needs something the Wellknown 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. | |
wellknown_upgrade | Upgrade to Pro (unlimited*) Get Pro: unlimited tool calls (fair use limit: 10,000 a month) on Wellknown (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. | |
wellknown_cancel_subscription | Cancel the Pro subscription Cancel the caller's Wellknown 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 wellknown_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 Wellknown server only. Subscribe with wellknown_upgrade (it returns a Stripe Checkout link). Cancel any time with wellknown_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running wellknown_upgrade before then undoes the cancel. Or write to [email protected].
Review new and changed bookings. Find open times for a treatment. Set special opening hours. Block time for a closure. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Wellknown. The server calls the Wellknown API with your own Wellknown 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 Wellknown venue 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 Wellknown venue 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 Wellknown 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 Wellknown.
Yes, if you approve it. 2 of the 7 Wellknown tools can create or change data. The other 5 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 Wellknown server only. Cancel any time: Pro then runs to the end of the paid period. Run wellknown_usage_status to see how many calls you used.
Ask the AI to run wellknown_upgrade: it returns a Stripe Checkout link. To cancel, run wellknown_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 wellknown_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.