Macfax MCP Server

Used-Mac market: quality-gated listings with deep links, asking-price stats, trust checks, alerts.

Remote serverstreamable-http

What is the Macfax MCP server?

If you already use Macfax, the macfax mcp server is the piece that lets your assistant work with it directly. Used-Mac market: quality-gated listings with deep links, asking-price stats, trust checks, alerts.

What the server does

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

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

  • ChatGPT — Settings → Developer mode → add the URL (directory listing pending review)
  • CursorInstall in Cursor
  • 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)
  • search_mac_listings — Live listings across eBay, Craigslist, OfferUp, Swappa, Facebook and Reddit. Scam clusters, junk titles, classified-ad bait, auctions and stale/sold
  • get_mac_price_stats — What an exact configuration actually sells for — verified-sale percentiles (basis direct) or an estimate scaled from the asking band by a disclosed
  • check_mac_listing — One 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
  • lookup_mac_serial — Serial to model and year for any Mac, including 2021+ randomized serials. Also cross-references verified Macfax reports. Human twin
  • get_mac_report — A verified Macfax condition report (Activation Lock, MDM, serial-match checks) as data
  • create_mac_alert — A standing watch: daily email when new matching listings appear. Human-confirmed: nothing sends until the email's owner clicks the confirmation link

Credentials and setup notes

Configuration is passed through the environment: MACFAX_API_KEY. Treat anything key-shaped as a real credential — scope it to the minimum the server needs, and rotate it if it ever lands in a shared config.

Installation

Because this one is hosted, setup is mostly authentication — you point your client at the endpoint and approve access. Nothing runs on your machine, so there is no runtime to keep patched.

Where it fits

Among the team communication options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Macfax's toolset — ChatGPT, Cursor, MACFAX_API_KEY and 6 more — is a fair guide to whether it matches your workflow. It is maintained by com.macfax; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Worth knowing first

  • Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
  • With 9 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Macfax.
  • Missing credentials fail quietly in some clients — if no tools show up, check the environment block first.
  • Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Available tools

ToolWhat it does
ChatGPTSettings → *Developer mode* → add the URL (directory listing pending review).
Cursor[Install in Cursor](cursor://anysphere.cursor-deeplink/mcp/install?name=macfax&config=eyJ1cmwiOiJodHRwczovL21hY2ZheC5jb20vbWNwIn0=)
MACFAX_API_KEYa free key raises rate limits about 10x. Mint one with curl -X POST https://macfax.com/api/v1/keys (no email needed).
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
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 and year for any Mac, including 2021+ randomized serials. Also cross-references verified Macfax reports. Human twin: [macfax.com/lookup](https://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.

How to install the Macfax MCP server

{
  "mcpServers": {
    "macfax": {
      "command": "npx",
      "args": ["-y", "macfax-mcp"],
      "env": {
        "MACFAX_API_KEY": "your-value"
      }
    }
  }
}

Add to claude_desktop_config.json, then restart Claude Desktop.

Configuration

VariableDescriptionRequired
MACFAX_API_KEYCredential the server authenticates with.Yes

Example prompts to try

  • Use Macfax to ChatGPT.
  • Use Macfax to Cursor.
  • Use Macfax to MACFAX API KEY.

Frequently asked questions

It connects Macfax to MCP-compatible AI assistants such as Claude and Cursor, exposing 9 tools (ChatGPT, Cursor, MACFAX_API_KEY, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Macfax directly.