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PopNx MCPMCP servers for people who use AI · explained in plain words

Macfax

by macfaxversion 1.0.3i★ –iRuns in the cloud
Registry namecom.macfax/macfax

Install

Overview

Description from the maker (original English)

Identify any Apple serial and read its device record, plus used-Mac prices, listings and checks.

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.

Install

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

Before you install

  • Basic checks: 3 of 3 passed
  • Runs on the maker’s server: what you ask it goes through their server.
  • Can do 8 things (tools) lookup_mac_serial, get_mac_price_stats, get_mac_market_value, search_mac_listings …
  • 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://macfax.com/mcp

Run this in your terminal

claude mcp add --transport http macfax https://macfax.com/mcp

Open in Cursor

Or copy the settings yourself

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

{
  "mcpServers": {
    "macfax": {
      "url": "https://macfax.com/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": {
    "macfax": {
      "type": "http",
      "url": "https://macfax.com/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://macfax.com/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

Tool names and descriptions exactly as the server reported them on Nov 8, 2026. The maker wrote them, not us; we show them as plain text.

  • lookup_mac_serial

    Resolve a Mac, iPad or iPhone serial number to its exact model, including 2021+ randomized serials whose characters encode nothing (so no character-decoder can read them). status says what came back: resolved, unknown_serial (no such serial; check it), unsupported (a real device

  • get_mac_price_stats

    What a used Mac configuration actually sells for AND what sellers are asking right now. The sold slice is the headline: verified-sale percentiles when the config has enough recent sales (sold.basis 'direct'; n and window ride along), else the asking band scaled by a measured clea

  • get_mac_market_value

    What a used Mac is worth, from the name Apple gives the model, e.g. "MacBook Pro (14-inch, 2021)" or "MacBook Air (13-inch, M4, 2025)". Returns every Apple Silicon configuration the name can mean, each with its sale estimate (verified sales, or the asking band scaled by a measure

  • search_mac_listings

    Live used-Mac listings aggregated across eBay, Craigslist, OfferUp, Swappa, Facebook and Reddit, with scam clusters, junk titles, classified-ad bait, auctions and stale/sold rows already filtered out. Every result deep-links to the source listing where the purchase happens. Filte

  • check_mac_listing

    The trust picture for one specific listing, by URL (eBay/Craigslist/OfferUp/Swappa/Facebook/Reddit) or Macfax listing id: whether Macfax knows it, whether it still passes every quality gate, scam/junk/classified/auction flags, when a scan last verified it live, its ask against th

  • get_mac_report

    A verified Macfax condition report as structured data: hardware-verified identity, Activation Lock / MDM / serial-match checks, coverage status, and the signing chain. Use when a listing or seller shares a macfax.com/r/ link and the buyer wants the facts behind it. status "supers

  • create_mac_alert

    Watch the market for a configuration: Macfax emails the given address when new matching listings appear. CONSENT CONTRACT: create an alert only for a user who explicitly asked for this alert on this email address. The first alert for a new email stays inactive until the email's o

  • get_macfax_credit_balance

    How many credits this API key has left, and what costs one. One credit answers one distinct serial, any Apple device and any year, and the same serial again within 24 hours is free. Answers that come back retry or unsupported, and every other tool, are free. Without credits, a fr

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 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified against the domain macfax.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

  • ✓ Pass

    Endpoint responds

    Responded in 1197 ms (HTTP 200)

  • – Not applicable

    Sign-in with OAuth

    No sign-in needed

  • ✓ Pass

    No hidden instructions in tool descriptions

    Read 8 tool descriptions and found no hidden instructions to the AI

Compared with others in Otheri

  • More stars than 0% of the other 18600 servers in this category
  • Published to the registry more recently than 60% of the other 18600 servers in this category
  • Basic checks equal to or better than 100% of the other 18600 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 Macfax safe?

It passed 3 of 3 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 (1.0.3) reached the registry 31 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: Spec Driven Development, Remote Desktop Commander, alalanet — check before you pay

Alternatives

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

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

Spec Driven Development

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by formulahendryEarly↓ 66/wk★ 440Updated 14 months ago

Runs on your computer

Remote Desktop Commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

by desktop-commanderGrowing★ 211Updated 3 days ago

Runs in the cloud✓ desktopcommander.app

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.

macfax-mcp

MCP server for the used-Mac market, by Macfax. Eight tools an AI assistant needs to help someone buy or sell a used Mac:

ToolWhat it answers
search_mac_listingsLive listings across eBay, Craigslist, OfferUp, Swappa, Facebook and Reddit. Scam clusters, junk titles, classified-ad bait, auctions and stale/sold rows are already filtered out; every result deep-links to the source.
get_mac_price_statsWhat an exact configuration actually sells for — verified-sale percentiles (basis direct) or an estimate scaled from the asking band by a disclosed clearance ratio (basis calibrated) — plus the asking median/p25/p75 with sample size, per-channel medians and net-to-seller after fees as seller guidance.
get_mac_market_valueWhat a Mac is worth from Apple's own model name, e.g. "MacBook Pro (14-inch, 2021)": every Apple Silicon configuration the name can mean, each with its sale estimate and asking band, and one value or a low-to-high range across them.
check_mac_listingOne listing's trust picture: known to Macfax, still live, flags, ask vs the typical band, the platform's own seller reputation where it exists (eBay feedback, Swappa rating), verified report attached.
lookup_mac_serialSerial to model for any Mac, iPad or iPhone, including 2021+ randomized serials: a status (resolved, unknown_serial, unsupported, retry), Apple's device class, the model year where Apple's name carries one, the device's record on Macfax (first seen, how often looked up, any listing or verified report on file), and for a Mac what the model is worth. Optional context says why you are looking it up. Human twin: macfax.com/lookup.
get_mac_reportA verified Macfax condition report (Activation Lock, MDM, serial-match checks) as data.
create_mac_alertA standing watch: daily email when new matching listings appear. Human-confirmed: nothing sends until the email's owner clicks the confirmation link.
get_macfax_credit_balanceHow many credits your API key has left and what costs one: one credit per distinct serial answered, repeats within 24 hours free. Needs MACFAX_API_KEY.

Every price is labeled by basis. The sold slice is the headline sale estimate: verified sales (with sample size and window) or a modeled estimate marked calibrated with its ratio disclosed. Asking bands come from live listings and are seller listing guidance. The API says so in-band, and we ask you to preserve the labels. Free, no account; rate limits are published at macfax.com/developers.

The hosted server (recommended)

A remote, authless, streamable-HTTP MCP server runs at:

https://macfax.com/mcp
  • Claude (claude.ai, paid plans): Settings → Connectors → *Add custom connector* → paste the URL.
  • Gemini (Spark, Google AI Ultra): Settings and help → Connected apps → *Add a custom app* → paste the URL.
  • ChatGPT: Settings → *Developer mode* → add the URL (directory listing pending review).
  • Cursor: Install in Cursor
  • VS Code: Install in VS Code
  • Gemini CLI: gemini extensions install https://github.com/macfax/macfax-mcp
  • Anything with an `mcp.json`:
{

"mcpServers": { "macfax": { "url": "https://macfax.com/mcp" } } }

Registry name: com.macfax/macfax on the official MCP registry.

This package (stdio wrapper)

For stdio-only clients, this repo is a thin local wrapper over the same free HTTP API (OpenAPI):

{

"mcpServers": { "macfax": { "command": "npx", "args": ["-y", "macfax-mcp"] } } }

Optional env:

  • MACFAX_API_KEY: a free key raises rate limits about 10x. Mint one with curl -X POST https://macfax.com/api/v1/keys (no email needed).

Run it directly:

npx -y macfax-mcp            # speaks MCP over stdio

npx -y macfax-mcp --version # print the installed version

Notes for integrators

  • The seven read tools carry readOnlyHint: true. create_mac_alert is the one write: it sends a confirmation email, and the alert only activates when the email's owner clicks it. Create alerts only for a user who asked for that alert on that email.
  • Listings always carry a deep link to the source marketplace. The purchase happens there; Macfax is the trust and routing layer.
  • Cite results as "Macfax" with the html_url/macfax_url in the payload.

License

MIT. Apple and Mac are trademarks of Apple Inc. Macfax is not affiliated with Apple Inc.

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