Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Fax a form from your AI assistant. XipFax finds the right IRS fax number and shows the price first.
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Works in Claude on the web, desktop and mobile:
https://mcp.xipfax.com/mcpRun this in your terminal
claude mcp add --transport http fax https://mcp.xipfax.com/mcpPaste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"fax": {
"url": "https://mcp.xipfax.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.
Paste into .vscode/mcp.json in your project
{
"servers": {
"fax": {
"type": "http",
"url": "https://mcp.xipfax.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:
https://mcp.xipfax.com/mcpMenu 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.
Tool names and descriptions exactly as the server reported them on Nov 6, 2026. The maker wrote them, not us; we show them as plain text.
find_fax_numberFinds the fax number of the IRS office that takes a form or a notice, from XipFax’s list of offices, read from the IRS’s own pages. Give the form or the notice by its name or number alone, such as Form 2848, SS-4 or CP2000. Where the IRS gives a number for each state, give the pl
quote_faxThe price of sending one fax of a number of pages with XipFax, without a plan, from XipFax’s price list.
send_fax_linkA link that opens XipFax’s send screen with the fax number filled in: an office by its office_id from find_fax_number, or a fax number in the United States, its territories or Canada. The person adds their pages there, signs in and pays.
send_faxSends the person’s XipFax draft to an office, by its office_id from find_fax_number, or to a fax number in the United States, its territories or Canada. Give document_ids, as finish_fax_file gave them, in the order you added them. It goes at once only where the person has a plan
get_faxHow a fax of the person’s went, by its id, as send_fax gave it: whether it is sending and how far it has got, delivered, or failed and why, and when it is tried again, with its pages, its price and its times. Answers a fax they received too. For a delivered fax’s confirmation, us
get_fax_confirmationThe confirmation of a fax the person sent that was delivered: one page that says who received how many pages, from whom and when, which they can pass on. Answers a link that reads it, as a PDF, for a few minutes: give the person the link. Refused, saying why, for a fax not delive
add_fax_filePuts a PDF from the person’s own disk on their XipFax draft. A photo of any kind, such as a JPEG, PNG, HEIC, WebP, GIF or AVIF, goes as a PDF made from it first on their computer, upright as a photo viewer shows it: on a Mac, `sips -Z 2100 -s format pdf --out .pdf` makes one, upr
finish_fax_fileOnce the file’s PUT has answered 200, has XipFax read it back and count its pages. Answers the document, ready to send, with its pages; refused where the file never arrived, is locked or unreadable, or takes the fax past the pages a fax may hold. Give send_fax its id.
add_fax_file_from_urlPuts a PDF at a public address on the person’s XipFax draft: XipFax fetches it from the link, which must answer with the PDF itself, and reads its pages. Answers the document, ready to send, with its pages; refused, saying why, where XipFax can’t fetch it, or the PDF is locked, u
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
The registry lists no source repo, so we cannot match the publisher (xipfax.com) to the code
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Responded in 145 ms (HTTP 200)
No sign-in needed
Read 9 tool descriptions and found no hidden instructions to the AI
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 2 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.
The registry does not list a required key, though some servers ask you to sign in on first use.
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.
The GitHub repo last changed –, and the latest version (1.0.0) reached the registry 4 days ago.
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.
In the same category: Spec Driven Development, Remote Desktop Commander, Tethered Trust
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No README found in the repo