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Mr Suppy MCP server

Which MCP servers are Mr Suppy'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 2026-10-28

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Whose server it is
  • Registry namecom.mrsuppy/agentverified in the MCP registry

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

When we asked itchecked 2026-10-28
  • Stateanswerschecked 2026-10-28
  • Tools12
  • Server calls itselfsportpoeder-agent
  • Server version1.1.0
  • Protocol version2025-06-18

On 2026-10-28 the server answered initialize and tools/list without a sign-in. First answer in 5961 ms.

Should an agent connect itConnect it
  • Its tools do every use case we checked: compare supplement prices across UK retailers; check the cheapest price per serving for creatine.

Once connected

  • For "compare supplement prices across UK retailers", the likely first call is zoek_producten.
  • For "check the cheapest price per serving for creatine", the likely first call is zoek_producten.
  • Parameters are untyped or undescribed in 11 of 12 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: 7, the first on 2026-10-28
  • INITE MCP score91 of 100answers 79 · does the job 100 · definitions 85 · context 100 · connects 100
  • What an agent can do with it2 of 2 use cases
  • Answered86% of days6 of 7 daily checks
  • Median first answer1813 ms
  • Space in an agent's context≈ 2,219 tokensthe definitions of all its tools (12), which an agent carries on every turn
  • Tool definitionsB · 85 of 100
  • Typed results3 of 12 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 11 of 12

What an agent can do with it

  • can do · compare supplement prices across UK retailers
  • not sure · find discount codes for protein and sportswear
  • can do · check the cheapest price per serving for creatine

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 offers12 tools · read 2026-10-28
  • zoek_producten

    Zoek supplementen over alle shops in de gekozen markt (ook niet-Shopify) met prijs per 100 g/portie, SupplementScore en actuele kortingscode.

  • product_oordeel

    Onafhankelijk kwaliteitsoordeel over één product: SupplementScore met onderbouwing, reviews en actuele prijs.

  • prijs_historie

    Prijsverloop van een product (dagmetingen): laagste/hoogste/mediaan en of de huidige 'korting' echt een korting is. Geef product_id (het id uit zoek_producten, beste_in_categorie of product_oordeel) of product_key (uit datzelfde…

  • geverifieerde_code

    De actuele kortingscode voor een merk in de gekozen markt, met laatst-geverifieerd-datum en succespercentage uit gebruikersstemmen.

  • beste_in_categorie

    Onze ranglijst van de beste producten in een categorie (bijv. eiwitten, creatine, pre-workout).

  • week_deals

    De actuele weekfolder-deals (supermarkt én online) met oude/nieuwe prijs en korting; alleen voor markt nl/be.

  • actuele_sales

    Welke supplementmerken nú een sale hebben in de gekozen markt, met hoogste korting en voorbeeldproduct.

  • verwachte_sales

    Sale-planning vooruit: aangekondigde en verwachte sales per merk (van/tot, korting), op basis van merk-aankondigingen en onze eigen sale-waarnemingen.

  • score_methodologie

    Het volledige SupplementScore-scoremodel, machine-leesbaar: criteria, letterschaal, bewijslast, onafhankelijke review en dispuutprocedure.

  • search_catalog

    Zoek supplementen in UCP-vorm (Universal Commerce Protocol): producten met prijs in centen, verkoper, en per variant kortingscode (discounts.codes), attribution, partner_url en permalink. Dezelfde bron als zoek_producten.

  • lookup_catalog

    Haal producten op via hun UCP-id (sp-p-<id> of sp-v-<id>, ook kale post-id) in UCP-vorm; elke variant draagt inputs[] met de gevraagde id. Onbekende id's worden gemeld, niet geweigerd.

  • get_product

    Eén product (sp-p-<id> / sp-v-<id>) in UCP-vorm met kortingscode, partnerlink en permalink; bij een onbekend id een JSON-RPC-fout.

How to connect

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

{
  "mcpServers": {
    "agent": {
      "type": "http",
      "url": "https://mrsuppy.com/api/agent/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

claude mcp add --transport http mrsuppy https://mrsuppy.com/api/agent/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://mrsuppy.com/api/agent/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.