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WashLib MCP server

Which MCP servers are WashLib's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-19

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Whose server it is
  • Registry namecom.washlib/washlibverified in the MCP registry

The registry name sits under washlib.com. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-19
  • Stateanswerschecked 2026-10-19
  • Tools8
  • Server calls itselfwashlib
  • Server version1.0.0
  • Protocol version2025-06-18

On 2026-10-19 the server answered initialize and tools/list without a sign-in. First answer in 380 ms.

Should an agent connect itNot proven either way yet
  • Whether its tools do the product's job has not been judged yet.

Once connected

  • Parameters are untyped or undescribed in 5 of 8 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 17, the first on 2026-10-19
  • INITE MCP score97 of 100answers 100 · definitions 90 · context 100 · connects 100
  • Answered100% of days17 of 17 daily checks
  • Median first answer478 ms
  • Space in an agent's context≈ 1,788 tokensthe definitions of all its tools (8), which an agent carries on every turn
  • Tool definitionsA · 90 of 100
  • Typed results0 of 8 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 5 of 8

What an agent can do with it

  • not sure · Compare hand car wash centres by price and available slots
  • not sure · Book a hand car wash without creating an account
  • cannot · Track a booked wash and get appointment notifications

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers8 tools · read 2026-10-19
  • search_available_slots

    Open car-wash time slots near a place on a given day: for each centre, its slots with remaining capacity and expected busyness. A slot label such as "09:00 - 11:00" is a 2-hour window whose start is the arrival time. A concrete place (an…

  • find_centers

    Active car-wash centres near a place, nearest first, from the place as the customer names it (city, district, postal code or centre name). resolvedLocation reports how the place was understood.

  • get_services

    List the services a center offers with a starting price each. centerId is the numeric id from find_centers.

  • get_center_details

    Details of one centre: address, phone, opening hours (Paris time), upcoming closures, accepted payment methods (online / on site / card-only), free parking hours, whether it is open now and bookable today, and its vehicle price categories…

  • quote_booking

    Exact price of a basket of services at one centre for a vehicle category, as the booking will charge it: per-line prices, the online-payment discount, off-peak (« heures creuses ») pricing when date and timeSlot are given, and the on-site…

  • start_booking

    Prepares a booking without creating it: re-checks the slot against live capacity and the basket against the centre, then returns bookingUrl — a washlib.com link that opens the booking form at the contact step with the centre, day, slot…

  • recommend_wash

    Recommend a wash formula for a vehicle given how dirty it is and the season. Pure guidance, no booking.

  • get_booking

    Retrieve a booking the caller owns. Requires a Firebase phone-OTP token (Authorization: Bearer <idToken>); the booking is only returned when its phone number matches the verified caller.

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

{
  "mcpServers": {
    "washlib": {
      "type": "http",
      "url": "https://www.washlib.com/api/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http washlib https://www.washlib.com/api/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://www.washlib.com/api/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.