ply 3D Printing

com.plyparts/plyplyparts.comstreamable-httpv1.0.0Scanned 1 hour ago

Custom 3D-printed parts: describe a part, upload a 3D file or pick a model, see a live price, order.

7 tools: 5 change things and 2 only read.

Reads private data · 0
Reads text others write · 2
Can send data out · 1
2 findings

Anlyon alternative

5 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

Import an OpenAPI spec →

Tools

Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.

7 tools

Changes things 5Creates or changes something that can be changed back.Claude Code: ask

make_partBuild, check and price a custom 3D-printed part from exact sizes (mm): plate with holes, L-bracket, spacer/standoff, washer, or box with lid.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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. Use again with new sizes or options when the customer asks for changes.
Annotations the server declares
- title: Make a custom part
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
order_partPut a part into a ply cart and get the link to finish the order on plyparts.com (shipping, payment, engineer review).No findings
Why it is in this group
- The description's first verb is "put": a word for a change.
Description, as the server wrote it
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.
Annotations the server declares
- title: Order on ply
- readOnlyHint: false
- destructiveHint: false
- idempotentHint: false
- openWorldHint: false
price_filePrice the customer's 3D file (STL, 3MF, STEP or OBJ) and show it in ply's card.No findings
Why it is in this group
- Nothing in its name or description says what it does, so it is counted as a write.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Description, as the server wrote it
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 `path` (from an earlier result) to change options for a file already priced.
Annotations the server declares
- title: Price a 3D file
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false
price_model_linkPrice a 3D model from its page link and show it in ply's card.Reads text others writeCan send data out1 finding
Why it is in this group
- The name "price_model_link" says "link": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
- outboundThe input takes a URL (input.url): a request to a URL can carry data to whoever runs it.
Findings
- Warn
  The server marks "price_model_link" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "price_model_link" says "link": a word for a change.
  What this check looks for
Description, as the server wrote it
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 declined with the reason. Poly Haven (CC0 decor and props made at real-world size): ply fetches it scaled to fit (150 mm on its longest side, or sizeMm). Other sites (Thingiverse, MakerWorld, MyMiniFactory, Thangs, Cults3D…): the card links to the page and the customer drops the downloaded file in. If a Printables model has several files, ply lists them: pass the one wanted as `file`.
Annotations the server declares
- title: Price a model from a link
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
recommend_materialRun 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 st…1 finding
Why it is in this group
- The description's first verb is "run": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "recommend_material" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "run": a word for a change.
  What this check looks for
Description, as the server wrote it
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 template and sizes (a built part).
Annotations the server declares
- title: Recommend a material
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

Only reads 2Looks things up and changes nothing.Show 2 read-only tools

find_modelsSearch 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 f…Reads text others writeNo findings
Why it is in this group
- The name "find_models" says "find": a word for reading.
What it can reach
- untrusted-inputThe server marks it openWorldHint: true: it reaches things outside the server's own data.
Description, as the server wrote it
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, licenses and page links.
Annotations the server declares
- title: Find printable models
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: true
list_materialsThe materials, colors and strength levels ply prints custom parts in, with what each material is good for.No findings
Why it is in this group
- The name "list_materials" says "list": a word for reading.
Description, as the server wrote it
The materials, colors and strength levels ply prints custom parts in, with what each material is good for.
Annotations the server declares
- title: List ply materials and colors
- readOnlyHint: true
- destructiveHint: false
- idempotentHint: true
- openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Exfil surface

Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.

No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data.

Reads private data0: Reads files, mail, messages, databases, secrets, calendars or repositories.
Reads text others write2: Brings in text someone else can write: web pages, inbound email, messages, issues and comments.; find_models
price_model_link
Can send data out1: Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.; price_model_link

Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.

Findings

Matches of fixed checks, with the text they matched.

2 warn

Warnprice_model_link
The server marks "price_model_link" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The name "price_model_link" says "link": a word for a change.
What this check looks for
Warnrecommend_material
The server marks "recommend_material" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":false}; The description's first verb is "run": a word for a change.
What this check looks for

History

Changes to its tool definitions and to its remote endpoint, newest first.

No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.

All changes to this server

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

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

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

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json

{
  "permissions": {
    "allow": [
      "mcp__ply__find_models",
      "mcp__ply__list_materials"
    ],
    "ask": [
      "mcp__ply__make_part",
      "mcp__ply__price_file",
      "mcp__ply__price_model_link",
      "mcp__ply__recommend_material",
      "mcp__ply__order_part"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as ply. Review it before you use it.

Capability tags behind 2 rules

mcp__ply__price_model_link untrusted-input, outbound
mcp__ply__find_models untrusted-input

Keep the decision: fail CI when the tools change, follow every change, or show a badge.

Pin in CI

Fail a build when the tools you reviewed are not the tools the server serves today.

curl -s "https://anlyon.dev/api/v1/servers/com.plyparts/ply/verify?hash=0bbebc2a876bc5e06a455b37dc6253668f843613897811b423d76f519f277dbc" | jq -e '.changed == false'

Pinned hash 0bbebc2a876b, from Oct 26, 2026, 22:18 UTC.

Watch

Get told when its tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.plyparts/ply/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Badge

[![anlyon.dev](https://anlyon.dev/badge/com.plyparts/ply.svg)](https://anlyon.dev/servers/com.plyparts/ply)

Source: MCP Registry. Synced Oct 26, 2026, 22:17 UTC.