Official MCP RegistryListed
XipFax
Fax a form from your AI assistant. XipFax finds the right IRS fax number and shows the price first.
First seen 4 Nov 2026. Evidence as of 7 Nov 2026.
11
Tools
From an anonymous probe
1
Source listings
Each with its own history
15
Recorded changes
Since first seen
Tools
| Tool | Description | Behaviour |
|---|---|---|
| add_fax_file | Puts 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 <photo> --out <name>.pdf` makes one, upright and at most 2,100 pixels on its long side. Any other kind of file, such as a Word file, goes once saved as a PDF. Work out the PDF’s size in bytes and its SHA-256 first, with a command such as `shasum -a 256 <file>`, and give both. The answer is an address good for 15 minutes and the headers to send with the file: PUT the file’s exact bytes there with each of those headers, such as with `curl --upload-file <file> -H "<name>: <value>" "<address>"`, then call finish_fax_file. The address takes this file alone. PDFs only, 40 MB at most. | Changes data |
| add_fax_file_from_url | Puts 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, unreadable or takes the fax past the pages a fax may hold, and then nothing is added. For a file on the person’s own disk, use add_fax_file. Give send_fax its id. | Changes data |
| add_fax_file_link | An address where the person adds their pages to their XipFax draft from their own browser, PDFs or photos, with no sign-in there: for a file you can’t reach or pass to add_fax_file, such as one on their phone or one attached to this chat. Give the address to the person alone, since whoever holds it can add pages to their draft. It works once, for 30 minutes. Ask them to add their pages there, press “Done adding pages”, and tell you when they’re done; then call finish_fax_file_link with its link_id. | Changes data |
| find_fax_number | Finds 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 place too. | Read-only |
| finish_fax_file | Once 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. | Changes data |
| finish_fax_file_link | Once the person says they’re done adding their pages at the address add_fax_file_link gave, answers the documents it put on their draft, ready to send, with their pages. Until they’ve pressed “Done adding pages” there, added is false, there are no documents, and ask says what to ask of them: to add their pages there, press “Done adding pages”, and tell you when they’re done; then call again. Give send_fax their ids, with any others you added, in the order you added them. | Read-only |
| get_fax | How 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, use get_fax_confirmation. | Read-only |
| get_fax_confirmation | The 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 delivered. | Read-only |
| quote_fax | The price of sending one fax of a number of pages with XipFax, without a plan, from XipFax’s price list. | Read-only |
| send_fax | Sends 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 and chose Send straight away for you, when they connected you or since. Otherwise nothing is sent: the answer is a link where they look the fax over, send it and pay where they have no plan, so give them the link and never say it went. A draft with no pages, or with other pages than those you name or in another order, also answers a link, where they add or check them. | Destructive |
| send_fax_link | A 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. | Read-only |
Change history
- send_fax: input schema changed
- get_fax: input schema changed
- finish_fax_file_link: tool added
- add_fax_file_link: tool added
- server instructions changed (+"add_fax_file_link gives an address where they add their pages from their own browser instead, for a file you can’t reach, and finish_fax_file_link answers what they added;")
- send_fax: tool added
- get_fax_confirmation: tool added
- get_fax: tool added
- finish_fax_file: tool added
- find_fax_number: input schema changed
- add_fax_file_from_url: tool added
- add_fax_file: tool added
- server instructions changed (+"find_fax_number finds" +"quote_fax gives" +"send_fax_link gives")
- quote_fax: input schema changed
- Listed (registry)
| Source | Listing | First seen | Last seen | Versions |
|---|---|---|---|---|
| Official MCP Registry | com.xipfax/fax | 4 Nov 2026 | 7 Nov 2026 | 1 |