Prototype · Preview: every server in the official registry, synced every 30 minutes. Reviews and accounts come in a later step.
PopNx MCPMCP servers for people who use AI · explained in plain words

compatsy 3D printing

by elliot-rosenversion 0.1.0i★ –iRuns in the cloud
Registry namecom.compatsy/3d-printing

Install

Overview

Description from the maker (original English)

What fits, with live prices: specs, fit verdicts with rule ids and stock for 3D printing.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs in the cloud
  • Transport: Streamable HTTP
  • Category: Design, images & audio

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • The registry lists no key to fill in.

You need

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Works in Claude on the web, desktop and mobile:

  1. Open Settings → Connectors
  2. Press Add custom connector
  3. Paste the address below and press Add
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Add2https://…3
https://compatsy.com/3d-printing/mcp

Run this in your terminal

claude mcp add --transport http 3d-printing https://compatsy.com/3d-printing/mcp

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "3d-printing": {
      "url": "https://compatsy.com/3d-printing/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "3d-printing": {
      "type": "http",
      "url": "https://compatsy.com/3d-printing/mcp"
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

ChatGPT connects only to servers on the internet:

  1. Open ChatGPT on the web → Settings → Connectors (Apps)
  2. Press Create or Add (some plans need Developer mode under Advanced first)
  3. Paste the address below, give it a name and save
  4. If it asks you to sign in, sign in with the maker
SettingsConnectors1+ Create2https://…3
https://compatsy.com/3d-printing/mcp

Menu names can differ slightly by plan and over time.

Your choice stays on this device in a cookie; no account needed.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain compatsy.com (the registry checks domain ownership)

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • … Not checked yet

    Endpoint responds

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    Sign-in with OAuth

    Not checked yet; we check endpoints in rotation

  • … Not checked yet

    No hidden instructions in tool descriptions

    Not checked yet; we read the tool list when we check the endpoint

Compared with others in Design, images & audioi

  • More stars than 0% of the other 2182 servers in this category
  • Published to the registry more recently than 79% of the other 2182 servers in this category
  • Basic checks equal to or better than 100% of the other 2182 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is compatsy 3D printing safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.0) reached the registry 8 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Figma Context MCP, Claude Real Video, Figma MCP Server

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Give your coding agent access to your Figma data. Implement designs in any framework in one-shot.

Runs on your computer★ 16,165MITUpdated 5 months ago
Install

Claude Real Video

by HUANGCHIHHUNGLeo

Let any LLM watch a video locally — and search everything it has ever watched.

Runs on your computer★ 2,284MITUpdated 2 months ago
Install

Figma’s official server gives AI your design data so it can turn designs into code or describe them accurately. Connects to Figma’s cloud.

Runs in the cloud★ 2,152Updated 13 months ago
Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

compatsy-mcp

compatsy answers "does this part fit that machine, and where is it in stock?" Each category has its own MCP endpoint:

CategoryCoversEndpoint
3D printingprinters, nozzles, hotends, build plates, filament, enclosureshttps://compatsy.com/3d-printing/mcp
Home espressomachines, tampers, puck screens, distribution tools, dosing funnels, basketshttps://compatsy.com/home-espresso/mcp

Specs carry their source and confidence, fit verdicts cite the rule that decided them, and prices come with the time they were last verified.

This repo is the quickstart for the hosted MCP server. Nothing runs locally except an optional stdio bridge.

Connect

Remote (preferred). Any client that supports Streamable HTTP:

{ "mcpServers": { "compatsy-3d-printing": { "url": "https://compatsy.com/3d-printing/mcp" } } }

stdio via npx. For clients that only launch local servers:

{ "mcpServers": { "compatsy-espresso": { "command": "npx", "args": ["-y", "github:elliot-rosen/compatsy-mcp"], "env": { "COMPATSY_MCP_URL": "https://compatsy.com/home-espresso/mcp" } } } }

Claude Code: claude mcp add --transport http compatsy-3d-printing https://compatsy.com/3d-printing/mcp

No account or key. Calls are rate limited per session. The bridge defaults to https://compatsy.com/mcp (3D printing); set COMPATSY_MCP_URL to another endpoint from the table.

Tools

ToolWhat it doesRead-only
search_productsFind products by name or category plus spec filtersyes
get_productFull specs with source and confidence, every offer with verified timeyes
compareSide-by-side spec table for 2 to 10 productsyes
check_fitVerdict for a part and a machine, with the rule id and version, or the missing fieldsyes
check_stockPrice and availability per merchant, re-verified when over an hour oldyes
report_issueFlag a wrong spec, price or verdict. Reports never edit factsno

Example calls

{"name": "search_products", "arguments": {"query": "hardened nozzle 0.4", "category": "nozzle", "limit": 5}}

{"name": "get_product", "arguments": {"product_id": "prusa-mk4s"}} {"name": "compare", "arguments": {"product_ids": ["bambu-lab-p1s", "prusa-core-one"]}} {"name": "check_fit", "arguments": {"subject_id": " ", "target_id": "prusa-mk4s"}} {"name": "check_stock", "arguments": {"product_id": "prusa-mk4s"}} {"name": "report_issue", "arguments": {"entity_type": "product", "entity_id": "prusa-mk4s", "field": "nozzle_thread", "claim": "MK4S uses the Nextruder thread"}}

Example prompts that use them well:

  • "Will a V6 nozzle fit my Prusa MK4S? If it needs an adapter, say which."
  • "Which hardened 0.6 mm nozzles fit a Bambu Lab P1S, cheapest in stock first?"
  • "Compare the Core One and the P1S on build volume and enclosure."
  • "Which puck screens fit a Breville Barista Express, in stock?"

Verdicts

fits, fits_with_adapter, does_not_fit or unknown. Unknown is an answer: it lists the spec fields that are missing rather than guessing. Every rule needs two independent sources, one from the manufacturer, before it can decide anything.

Editor rules

rules/cursor.mdc and rules/windsurf.md tell Cursor or Windsurf agents when to call compatsy instead of guessing fitment from memory.

Links

  • Methodology: https://compatsy.com/3d-printing/methodology and https://compatsy.com/home-espresso/methodology
  • Open data: https://compatsy.com/data
  • Privacy: https://compatsy.com/3d-printing/privacy
  • OpenAPI: https://compatsy.com/api/v1/openapi.json
  • Support: support@compatsy.com
Ask PopNx