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Which MCP servers are ply'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 2026-10-29

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Whose server it is
  • Registry namecom.plyparts/plyverified in the MCP registry

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

When we asked itchecked 2026-10-29
  • Stateanswerschecked 2026-10-29
  • Tools7
  • Server calls itselfply 3D Printing
  • Server version1.1.0
  • Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 121 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

  • For "get an instant price for an uploaded 3D file", the likely first call is price_file.

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 2026-10-29
  • INITE MCP score98 of 100answers 100 · definitions 98 · context 93 · connects 100
  • Answered100% of days7 of 7 daily checks
  • Median first answer178 ms
  • Space in an agent's context≈ 3,906 tokensthe definitions of all its tools (7), which an agent carries on every turn
  • Tool definitionsA · 98 of 100
  • Typed results0 of 7 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 1 of 7

What an agent can do with it

  • can do · get an instant price for an uploaded 3D file
  • not sure · print several files together in one order
  • not sure · have printed parts shipped to a US address

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 offers7 tools · read 2026-10-29
  • make_part

    Build, check and price a custom 3D-printed part from exact sizes (mm): plate with holes, L-bracket, spacer/standoff, washer, or box with lid. Shows the part in 3D with its price and an Order button. Sizes left out use sensible defaults…

  • price_file

    Price the customer's 3D file (STL, 3MF, STEP or OBJ) and show it in ply's card. Without a file, shows the card with an upload button (with sourceUrl: the model page to download it from). In ChatGPT, pass a file the customer attached. Pass…

  • price_model_link

    Price a 3D model from its page link and show it in ply's card. Printables: ply fetches the file itself if the license allows printing it for sale (CC0, CC BY, CC BY-SA, GPL, Commercial Use…) and credits the designer; other licenses are…

  • find_models

    Search for ready-made 3D models ply may print and sell: Printables (open or commercial-use licenses only; non-commercial models are left out) and Poly Haven (CC0 decor, props and figures, scaled to fit). Returns titles, designers…

  • recommend_material

    Run ply's material advisor ("Help me choose" on plyparts.com) for a part: it may ask up to 2 questions about how the part is used, then recommends a process, material, color and strength. Give either the part's ply `path` (a file) or its…

  • order_part

    Put a part into a ply cart and get the link to finish the order on plyparts.com (shipping, payment, engineer review). Nothing is charged here. For a built part pass the same template, sizes and options; for a file pass its path and options.

  • list_materials

    The materials, colors and strength levels ply prints custom parts in, with what each material is good for.

How to connect

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

{
  "mcpServers": {
    "ply": {
      "type": "http",
      "url": "https://www.plyparts.com/mcp"
    }
  }
}

Add it

Claude Code, in a terminal

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

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://www.plyparts.com/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.